The value of θ for which the bead will remain stationary relative to the rotating wire while assuming bead slides without friction is 2π radians.
For the bead to remain stationary relative to the rotating wire, the centripetal force provided by the wire must be balanced by the gravitational force acting on the bead. The gravitational force acting on the bead is given by the weight of the bead, which is:
Fg = mg
where m is the mass of the bead (150 g) and g is the acceleration due to gravity (9.8 m/s^2).
The centripetal force provided by the wire is given by:
Fc = mv^2 / r
where m is the mass of the bead, v is the velocity of the bead and r is the radius of the wire (20 cm).
For the bead to remain stationary relative friction to the wire, the gravitational force must equal the centripetal force.
mg = mv^2 / r
The velocity of the bead v is related to the angular velocity of the wire by v = r * ω
where r is the radius of the wire, and ω is the angular velocity of the wire (3 revolutions per second)
so we can substitute v = r * ω in the previous equation:
mg = m(r * ω)^2 / r
mg = mr^2 * ω^2
g = r * ω^2
Now we can find the angle θ for which the bead will remain stationary relative to the rotating wire by using the fact that:
θ = ω * t
where θ is the angle in radians, ω is the angular velocity and t is time in seconds. We know that the angular velocity of the wire is 3 revolutions per second, which is equal to 3*2π radians/second. We also know that the bead is on the wire's semicircle, so the bead will complete half a revolution in a time of 1/3 second.
So, the angle θ = ω * t = 3*2π * 1/3 = 2π radians
So, the bead will remain stationary relative to the rotating wire when it is at an angle of 2π radians (360 degrees) from the vertical axis of rotation.
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Define simple machine, and identify 6 types
A simple machine is a device that uses a single applied force to do work against a single load force. Simple machines do not involve the use of electricity or combustion, and are typically used to amplify or change the direction of applied forces.
The six types of simple machines are:
Lever: A bar that pivots around a fixed point, or fulcrum, to amplify or change the direction of applied forces.
Pulley: A grooved wheel with a rope or cable passing over it, used to change the direction of an applied force.
Inclined Plane: A flat surface that is angled, used to reduce the amount of force needed to lift an object.
Wedge: A triangular shape with one sloping side, used to split or lift objects by applying force at the sloping angle.
Screw: A spiral groove that helps convert rotational motion into linear motion.
Wheel and Axle: A cylinder that rotates around a central point (the axle), used to reduce the amount of force needed to move an object.
Suppose we wanted to make a scale model of the Local Group of Galaxies, in which the Milky Way Galaxy was the size of a marble (about 1 cm in diameter).
How far from the Milky Way Galaxy would the Andromeda Galaxy be on this scale?
Choose matching definition
O 1.4 km
O 25 cm
O as it was about 2 ½ million years ago
O in September
The Milky Way and Andromeda galaxies are roughly 2.5 million light-years apart. If we scale that down to the size of a marble, then the distance between the two galaxies would be 25 cm.
At what scale would the Local Group of Galaxies be represented in this model?In this scale model, the Milky Way Galaxy would be represented by a marble that is 1 cm in diameter. This means that the Local Group of Galaxies would be represented at a scale of 1/100,000th. This means that the Local Group of Galaxies would be represented at a scale of 0.00001, which is equivalent to 1 cm representing a distance of 100,000 cm or 1 km. Thus, if the Milky Way Galaxy was represented by a 1 cm marble, the Local Group of Galaxies would be represented by a 1 km sphere. This scale model would illustrate the immense size of the Local Group of Galaxies in relation to our own Milky Way Galaxy, which is only a small fraction of the Local Group's total size.To learn more about galaxies refer to:
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which of the following describes the proper way to fire a shotgun? a, raise the shotgun to the cheek and back to the shoulder, on the side of the dominant eye; and point at the target raise the shotgun to the cheek and back to the shoulder, on the side of the dominant eye; and point at the target b, raise the shotgun to the cheek and back to the shoulder, on the side of the non-dominant eye and aim at the target raise the shotgun to the cheek and back to the shoulder, on the side of the non-dominant eye and aim at the target c, set the stock underneath the arm, on the side of the dominant eye and aim at the target set the stock underneath the arm, on the side of the dominant eye and aim at the target d, position the stock underneath the arm, on the side of the non-dominant eye and point at the target position the stock underneath the arm, on the side of the non-dominant eye and point at the target
The proper way to fire a shotgun is raise the shotgun to the cheek and back to the shoulder, on the side of the dominant eye; and point at the target.
Shotguns are generally fired at a target and not aimed like rifles. They discharge shells or loads that may include a propellant wadding followed by a slug, shot, or other type of specialized projectile.
It is possible to fire a conventional bullet from a shotgun, which typically fires a plastic "shell" filled with numerous projectiles called "shot." This is accomplished using a device known as a "sabot" .
This is a single bullet that is loaded into a shotgun shell and is protected by a plastic or foam cylinder. After being fired, the plastic or foam cylinders separate along pre-scored lines and fall away as the single bullet continues on its course.
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a ball is thrown and follows the parabolic path shown. point q is the highest point on the path and points p and r are the same height above the ground.
Because of freefall, The only acceleration working on the ball is gravity in the parabolic path shown. Thus, Option C is correct.
What is parabolic path?Parabolic motion is a type of projectile motion in which an object is thrown or projected into the air and follows a curved path due to the influence of gravity.
In the case of the diagram, the ball is thrown upwards and follows a parabolic path. Point Q marks the highest point on the path and points P and R are the same height above the ground. This can be explained by the fact that the initial velocity of the ball is insufficient to reach a higher point than Q, so after reaching Q the ball begins to fall back to the ground, travelling the same distance at P and R before it reaches the ground.
The parabolic motion of the ball can be described by the equation s = u ×t + 0.5 × a × t2, where s is the displacement of the ball, u is the initial velocity, t is the time elapsed, and a is the acceleration due to gravity. This equation can also be used to calculate the maximum height that the ball will reach, in this case point Q.
The parabolic motion of the ball can be used to explain the physics behind a variety of scenarios, such as how a ball thrown into the air will move, how a skydiver will fall, and even how a spacecraft can be propelled into outer space. It is a fundamental concept in physics and understanding it can help to explain many of the phenomena we observe in our everyday lives.
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Full question:
(See attachment))
If a spring-operated gun can shoot a pellet to a maximum height of 100 m on Earth, how high could the pellet rise if fired on the Moon, where g = 1.6 m/s2? A 160m
B 100m
C 610m
D 17m
Answer:
10
if we calculate using the quantity of the moon you see that he was in Paris
When is a field study more appropriate that a laboratory experiment? Give a specific example.
A field study is more appropriate that a laboratory experiment when we need to know the real mining of unknown variables in a given outcome such as for example dark matter in space.
What are unknown variables in science?Unknown variables in science can be defined as variables that have yet to be identified or studied, either due to a lack of data or unknown factors.
Therefore, with this data, we can see that unknown variables in science such as the amount of Dark matter in the Universe are able to be shown by field (observational) studies.
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What happens if you move a magnet back and forth inside a coil of wire?
When we move the magnet back and forth inside the coil of the wire, it will produce a voltage.
When a magnet moves into a coil of wire, the magnetic field and flux through the coil change, creating a voltage in the coil according to Faraday's Law. In the example shown below, as the magnet moves into the coil, the galvanometer deflects to the left in response to the increasing magnetic field. When a magnet or coil repeats the reciprocating motion, alternating current is generated. Generators and transformers use electromagnetic induction to generate electricity and change the voltage of current. When the magnet is moved towards the coil, a current is induced in the coil due to the phenomenon of electromagnetic induction. The relative motion between the magnet and coil induces an electromotive force (EMF), which induces a current in the coil.
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which of the following quantities is at a maximum when an object in simple harmonic motion is at its maximum displacement? A) Speed B) Acceleration C) Kinetic Energy D) Frequency E) Both A & C are valid
The following quantity is at maximum when an object in simple harmonic motion is at its maximum displacement : B) Acceleration. Hence, B) Acceleration is the correct answer.
What is meant by simple harmonic motion?In physics, simple harmonic motion is a repetitive movement back and forth through an equilibrium, or central position, so that the maximum displacement on one side of this position is equal to the maximum displacement on other side.
Simple harmonic motion is defined as periodic motion of a point along straight line, such that acceleration is always towards a fixed point in that line and is proportional to the distance from that point.
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Trent builds a model electric motor. When he connects a battery to the motor, the motor spins through a half rotation and stops. Which is the most likely solution to the problem?
It is due to problem in commutator or split rings that reverse the current in the coil by which the energy armature completes its rotation.
What do you mean rotation?Rotation describes the circular motion of an object around its center. There are different ways things can rotate. energy, in physics, the capacity for doing work. Rotation of the Earthre. A very familiar kind of rotation is when a spherical, three-dimensional object turns around an invisible line inside its center.
What type of movement is rotation?Rotational movement involves moving the bone around its longitudinal axis; energy in the process of transfer from one body to another. this can be movement toward the midline of the body (medial rotation) or away from the midline of the body lateral rotation.
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A small ball of mass M is attached to the end of a uniform rod of equal mass M and length L that is pivoted at the top. Determine the tensions in the rod (a) at the pivot and (b) at the point P when the system is stationary. (c) Calculate the period of oscillation for small displacements from equilibrium and (d) determine this period for L = 2.00m .
The tensions in the rod
(a) at the pivot is 2mg
(b) At the point P when the system is stationary is mg (1+y/L)
(c) The period of oscillation for small displacements from equilibrium.
(d) For L = 2.00m, t = 2.68 s
Does displacement have an impact on the oscillation period?As long as the spring is not stretched out of shape, the period T of the oscillating system is independent of the displacement from rest. The time it takes for a system to complete one oscillation before returning to its initial position is known as the period.
Does a rod have tension?
In physics, tension is defined as the pulling force that is transmitted axially through the use of a string, rope, chain, or similar object, or by the ends of a rod, truss member, or other similar three-dimensional objects. Tension can also be defined as the action-reaction pair of forces acting at the ends of the aforementioned elements.
(a) At the pivot,
F = mg + mg =2mg
(b) At the point P when the system is stationary,
F = mg (y/L) + mg = mg (1+y/L)
(c) The period of oscillation for small displacements from equilibrium,
(d) For L = 2.00 m
t = 2.68 s
The tension in the rod at the pivot is 2mg, and at the point P when the system is stationary is mg (1+y/L).
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a pharmacist is compounding a hazardous preparation in the primary engineering control of a buffer room. if the pressure of the ante room is 0.06 inches water column, the pressure in the buffer room must be ______ inches water column.
a pharmacist is compounding a hazardous preparation in the primary engineering control of a buffer room. if the pressure of the ante room is 0.06 inches water column, the pressure in the buffer room must be USP 797 inches water column.
What are the anteroom and buffer room's ISO levels?The gowning room and ante room must be Class 8 or better, and the buffer room must be ISO Class 7 or better (less than 352,000 particles-per-cubic-meter) (less than 3,520,000 particles-per-cubic meter).
The principal engineering control, which is situated in the buffer region, performs sterile compounding (also known as the clean room). The equipment used for non-sterile compounding is a containment ventilated device. Sterile compounding can be done for immediate use outside of an ISO 5 facility in an emergency.
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1. the weights (in ounces) of 27 tomatoes are listed below. construct a modified boxplot for the data. identify any outliers. 1.7 2.0 2.2 2.2 2.4 2.5 2.5 2.5 2.6 2.6 2.6 2.7 2.7 2.7 2.8 2.8 2.8 2.9 2.9 2.9 3.0 3.0 3.1 3.1 3.3 3.6 4.2
Minimum, First Quarter, Median, Third Quarter, Maximum 1.700 2.500 2.700 2.752 2.950 4.200,the length (x) [1] 27 boxplot(x,main="Data boxplot")
How is identify any outliers?We may create the boxplot by doing the following:
Data provided
These procedures can be used to create the necessary boxplot.
Order the data set first.
1.7 2.0 2.2 2.2 2.4 2.5 2.5 2.5 2.6
2.6 2.6 2.7 2.7 2.7 2.8 2.8 2.8 2.9
2.9 2.9 3.0 3.0 3.1 3.1 3.3 3.6 4.2
2) Determine the median.
Since there are 27 variables, position 14 would be the median in this situation.
Average = 2.7
3) Determine Q1.
Below 2.7 are the following data values: 1.7 2.0 2.2 2.4 2.5 2.5 2.5 2.6 2.6. Their median falls in the centre: Q1 = 2.5
4) Determine Q3.
The following data values are found above 2.7: 2.8 2.8 2.8 2.9 2.9 3.0 3.0 3.1 3.3 3.6 4.2.
Their median is in the centre: Q3 = 2.95
5) Determine the maximum and minimum.
Min = 1.7, Max = 4.2
6) Determine IQR
IQR= Q3-Q1= 2.95-2.5=0.45
7) The boxplot's minimum and maximum values
IQR = 2.5-1.5*0.45=1.825; MWB = Q1-1.5
IQR = 2.5 + 1.5 * 0.45 = 3.17 UWB = Q3 + 1.5
8) Recognize outliers
Potential outlier values include those that exceed UWB and fall below MWB.
And using the R code below, we can create the boxplot:
> x<-c(1.7, 2.0, 2.2, 2.2, 2.4, 2.5, 2.5, 2.5, 2.6,
+ 2.6, 2.6, 2.7, 2.7, 2.7, 2.8, 2.8, 2.8, 2.9,
+ 2.9, 2.9, 3.0, 3.0, 3.1, 3.1, 3.3, 3.6, 4.2)
To recap: (x)
Minimum, First Quarter, Median, Third Quarter, Maximum
1.700 2.500 2.700 2.752 2.950 4.200
the length (x)
[1] 27
boxplot(x,main="Data boxplot")
And as you can see, the image below is also connected.
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Why does the moon appear to be bright from Earth yet appears dark from space?
Answer:
The Moon appears to be bright from Earth because it reflects sunlight and the sunlight is reflected back to Earth, making it visible to us. However, when viewed from space, the Moon appears dark because it does not emit its own light and the sunlight is not reflected back towards the observer in space.
tai ran from his home to a position 300 m south of his home in 100 seconds what was his velocity
Velocity = distance / time = 300m / 100s
= 3 m/s
What is Velocity?Velocity is the direction at which an object is moving and serves as a measure of the rate at which its position is changing as seen from a specific point of view and as measured by a specific unit of time (for example, 60 km/h northbound).
A physical vector quantity called velocity must have both a magnitude and a direction in order to be defined.
Speed is the scalar absolute value (magnitude) of velocity; it is a coherent derived unit whose quantity is measured in metres per second (m/s or m/s1) in the SI (metric system).
Therefore, Velocity = distance / time = 300m / 100s
= 3 m/s
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Question:
A 3-kg plastic tank that has a volume of 0.2
m
3
is filled with liquid water. Assuming the density of water is 1000
k
g
/
m
3
, determine the weight of the combined system
Density:
The density of a material provides the quantity for its mass per unit volume. Knowing the density of a material, we can obtain the total mass it has by multiplying the volume, V, by the density, rho
, or m
=
V
×
rho
.
The weight of the combined system is 203 kg.
What is mean by density?
The density is the ratio of mass to volume. It is typically expressed as kilograms per cubic meter (kg/m3) and is used to quantify the physical properties of different materials.
Density is an important property as it affects the material’s ability to resist changes in pressure, temperature, and other physical forces.
It is also used to determine the composition of certain substances, such as the amount of salt in a solution.
Density is an intrinsic property of a material and is not affected by the size or shape of the sample being measured.
Density can be determined by measuring the mass of an object and dividing it by its volume. The density of a substance can be compared to that of other substances to determine relative densities.
Density is used in many areas of science such as physics, chemistry, engineering, and geology.
Density is also important to the study of materials, as it can be used to identify and characterize them. Density is an important parameter when considering the structural and mechanical properties of materials.
Step 1: Calculate the mass of water in the tank.
Mass of water = Volume of water x Density of water
Mass of water = 0.2m^3 x 1000 kg/m^3
Mass of water = 200 kg
Step 2: Calculate the weight of the combined system.
Weight of the combined system = Mass of tank + Mass of water
Weight of the combined system = 3 kg + 200 kg
Weight of the combined system = 203 kg
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convert each of these given volumes to the missing units. remember to add a leading zero when necessary. do not include trailing zeros. l ml 0.01 100 62 1.02 912 0.55
To convert 1 liter (L) to milliliters (mL), you would multiply 1 by 1000, because there are 1000 mL in 1 L. Therefore, 1 L is equal to 1000 mL.
0.01ml=0.00001L,100mL=0.1L,62L=62000mL,1.02 L = 1020 mL,
912 mL=0.912 L,0.55 L = 550 mL.
How to convert these given volume to the mising units?
To convert 0.01 milliliters (mL) to liters (L), you would divide 0.01 by 1000, because there are 1000 mL in 1 L. Therefore, 0.01 mL is equal to 0.00001 L.
To convert 100 milliliters (mL) to liters (L), you would divide 100 by 1000, because there are 1000 mL in 1 L. Therefore, 100 mL is equal to 0.1 L.
To convert 62 liters (L) to milliliters (mL), you would multiply 62 by 1000, because there are 1000 mL in 1 L. Therefore, 62 L is equal to 62000 mL.
To convert 1.02 liters (L) to milliliters (mL), you would multiply 1.02 by 1000, because there are 1000 mL in 1 L. Therefore, 1.02 L is equal to 1020 mL.
To convert 912 milliliters (mL) to liters (L), you would divide 912 by 1000, because there are 1000 mL in 1 L. Therefore, 912 mL is equal to 0.912 L.
To convert 0.55 liters (L) to milliliters (mL), you would multiply 0.55 by 1000, because there are 1000 mL in 1 L. Therefore, 0.55 L is equal to 550 mL.
It's important to note that when converting between units of volume, the conversion factor is always the same, but the direction of the conversion can change depending on which unit is being converted to or from.
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 A race car's velocity decreases from 26 m/s to 5 m/s over a 9 second time interval. What
is the car's average acceleration?
2.3m/s^2 is the car's average acceleration.
Describe acceleration.
Acceleration is the term used to describe how quickly velocity and speed change over time. It is referred to as accelerating when something changes its rate of motion. Because the direction is constantly shifting, motion on a circle accelerates even at constant speed.
According to Newton's Second Law, an object's acceleration is determined by the total force acting on it. Meters per second squared (m s2) is the unit of acceleration in the SI system. The distance an object travels in a specific amount of time is referred to as its speed.
v = u + at
v = 5m/s
u = 26m/s
t = 9sec
5 = 26 a*9
a = -21/9
a = -2.3m/s^2
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Daytime temperatures on Mercury are extremely hot because:
Choose all that apply
it is close to the sun
it has long days
it has volcanoes
one side faces the sun
it gives off internal heat
Mercury's Temperature is used to describe these given parameters.
What time is it in the day?
The time period known as "day" spans from the variable time of dawn to the time of darkness (roughly 6 o'clock). It is nighttime from sunset until sunrise. At midnight, each day officially begins. Just after midnight, AM (ante-meridiem, Latin for "before noon") starts.
How long are days?
While the exact number of daylight hours on any given year varies from location to location, there is an average of 12 hours of sunshine per day everywhere on Earth. The length of daylight each day is only about 12 hours near the equator of the planet.
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a circular thin ring of radius rr has a negative charge uniformly distributed around its circumference. which of the following is the best qualitative description of the electric potential moving along the central axis of the ring from a distance of 3r3r away to the center of the ring?
The electric potential moving along the central axis of the ring from a distance of 3r away to the center of the ring is decreasing. Thus, Option b is correct.
What is radius?Radius is a term used in geometry to describe the length of a line extending from the center of a circle to the edge of the circle. This line is also referred to as the radius of the circle. The radius is half the distance of the diameter, which is the line that goes from one side of the circle to the other. The radius is also used in other shapes such as ellipses, rectangles, and polygons.
This is because the electric field lines radiate outward from the circumference of the ring, and as a result, the electric potential is lower near the circumference and higher further away from the circumference. As one moves closer to the center of the ring, the electric potential decreases.
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Full question:
A circular thin ring of radius r has a negative charge uniformly distributed around its circumference. which of the following is the best qualitative description of the electric potential moving along the central axis of the ring from a distance of 3r away to the center of the ring?
a. Increasing
b. Decreasing
c. Accelerating
d. Retαrding
A bullet of mass mb is fired horizontally with speed vi at a wooden block of mass mw resting on a frictionless table. The bullet hits the block and becomes completely embedded within it. After the bullet has come to rest. Part A Which of the following best describes this collision? perfectly elastic partially inelastic perfectly inelastic Part B Which of the following quantities, if any, are conserved during this collision? kinetic energy only momentum only kinetic energy and momentum neither momentum nor kinetic energy. Part C:
What is the speed of the block/bullet system after the collision?
Express your answer in terms of vi , mw , and mb . vf = ?
Both kinetic energy and momentum is conserved in this hit since it is perfectly elastic. Vf = mV + M0 = (m + M)v is the speed of the block/bullet system after the contact.
In physics, an elastic collision is a collision between two bodies in which the total kinetic energy remains constant. In an ideal, elastic collision, there is no net conversion of kinetic energy into heat, noise, or potential energy. In physics, kinetic energy (KE) is the energy that an object has as a result of its motion. Both kinetic energy and momentum are conserved in this hit since it is completely inelastic. Vf = mV + M0 = (m + M)v is the speed of the block/bullet system after the contact. It is defined as the effort necessary to move a mass-based body from rest to the given velocity. in kinematics and everyday usage.
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Four identical charged particles (Q = +20 micro coulomb) are located on the corners of a rectangle as shown in the figure. The dimensions of the rectangle are L= 50 cm and W = 20cm. Calculate the magnitude and direction of the total electric force exerted on the charge at the lower left corner by the other 3 charges.
The charge deposited in the lower left quadrant will experience an electric force of 98.32 psi. Additionally, the direction is 74.49.
What is a magnitude example?The size of an object is its magnitude. For example, a car moves faster than like a bike in regards to speed. In this instance, the speed differential between both the car and also the bike is higher. It exposes the size or motion of an object in terms of absolute or relative dimensions.
What are magnitude and a vector?A quantity with both a path and a quantity is called a vector. An abundance or a numerical amount of something is referred to as a magnitude. Another vector is displacement amount, which is the separation between a beginning point and an ending location.
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The voltage and current at the terminals of the circuit element in Fig 1.5 are zero for t < 0. For f0 , they are v = 80,000f 0; i = 15te-5QQt A, t > 0.a) Find the time when the power delivered to the circuit element is maximum. b) Find the maximum value of power. c) Find the total energy delivered to the circuit element.
Time when the power delivered to the circuit element is maximum is [tex]t = ln(80,000f0/75) / (-5)[/tex]), B) The maximum value of power [tex]12f0 A[/tex],C)The total energy delivered to the circuit element is [tex]E = ∫ P dt = ∫ (80,000f0 x 15te^-5t) dt = 12f0 x (1/e^5) x (1-e^-5t)[/tex]
What is the total energy and maximum value of power delivered to the circuit?
a) To find the time when the power delivered to the circuit element is maximum, we need to find the time when the product of voltage and current is maximum.
Power = voltage x current = [tex]80,000f0 x 15te^-5t A[/tex]
The power will be maximum when the derivative of Power with respect to time is zero.
[tex]dP/dt = 0 = 80,000f0 x 15e^-5t - 75e^-5t A[/tex]
[tex]t = ln(80,000f0/75) / (-5)[/tex]
b) To find the maximum value of power, we can substitute the value of t in the equation of power.
[tex]P = 80,000f0 x 15e^-5(ln(80,000f0/75) / (-5)) A = 12f0 A[/tex]
c) To find the total energy delivered to the circuit element, we can integrate the power with respect to time.
[tex]E = ∫ P dt = ∫ (80,000f0 x 15te^-5t) dt = 12f0 x (1/e^5) x (1-e^-5t)[/tex]
The total energy delivered to the circuit element is[tex]12f0/e^5[/tex]
It's worth noting that this solution assumes that the circuit element is a linear element that follows Ohm's law and Kirchhoff's laws. If the circuit element is nonlinear this solution may not be valid.
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Why must the lamina swing freely when determining the centre of gravity?
By allowing the lamina to swing freely, the object's true weight distribution and the center of gravity can be observed and determined with greater accuracy.
The lamina (such as a flat plate or sheet) must be able to swing freely when determining the center of gravity (also known as the center of mass) for a few reasons:
First, the center of gravity is the point at which the weight of an object is evenly distributed, and the object will be balanced when suspended from that point. In order to determine the center of gravity, the object must be allowed to rotate or move freely, so that its weight distribution can be observed.
Second, if the lamina is not able to swing freely, it would be affected by external forces such as friction or air resistance, which could influence the object's weight distribution and give an inaccurate location of the center of gravity.
Third, if the lamina is not able to swing freely, it would be difficult to observe the object's movement, and therefore it would be difficult to determine the center of gravity.
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which of the following best describes the movement of an electron after it is ejected from the cathode?
Charged particles accelerate in an electric field. Electrons begin with a velocity that increases as they approach the anode from the cathode through the vacuum.
Cathodes come from cations (positively charged ions) and anodes come from anions (negatively charged ions). In devices that use electricity, the cathode is the negatively charged electrode. Thomson showed that cathode rays consist of hitherto unknown negatively charged particles (later called electrons). To display images on a screen, a cathode ray tube (CRT) uses a focused electron beam that is deflected by an electric or magnetic field. An anode is a negative or reducing electrode that donates electrons to an external circuit and oxidizes during an electrochemical reaction. A cathode is a positive or oxidizing electrode that receives electrons from an external circuit and is reduced during an electrochemical reaction.
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the specialty of an athlete on the women's track team is the pole vault. she has a mass of 60 kg and her approach speed is 8.7 m/s. when she is directly above the bar, her speed is 1.4 m/s. neglecting air resistance and any energy absorbed by the pole, determine the amount(in m) she has raised herself as she crosses the bar.
The height(in m) she has raised herself as she crosses the bar with initial speed of 8.7m/s is found to be 3.76m
What does energy conservation mean?A fundamental law of physics and chemistry asserts that despite internal changes, the overall energy of an isolated system remains unchanged. It is the fundamental premise of the first law of thermodynamics, which is most frequently stated as "energy cannot be created or destroyed."
Mass of the women => 60Kg
V1 => 8.7 m/s
v2=> 1.4m/s
Conservation of energy:
Kinetic energy 1 = Kinetic energy 2 + Potential energy
1/2 m v1^2 = 1/2 m V2^2 + mgh
V1^2 -v2^2/2 xg => h => height she raised
h=> 3.76m
What are the three laws of energy conservation?There are three essential quantities in mechanics which are conserved. They are power, forward motion, and angular momentum.
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12. What is the initial height of a 2.75-kg baseball that was thrown at velocity of 7.9 m/s and
was caught with a glove at 11.8 m/s at a height of 1.25 m?
The initial height of a 2.75-kg baseball that was thrown at velocity of 7.9 m/s 21.725.
What is the initial height?To emphasise the relief-like structure in a processed representation, the object's initial height representation is treated utilising height alterations.
h = v 0 y 2 2 g . h = v 0 y 2 2 g . This equation, which solely depends on the vertical component of the starting velocity, specifies the maximum height of a projectile above its launch site.
The formula is expressed as v 2 u 2 =2as, where v is the final velocity, u is the beginning velocity, an is the acceleration due to gravity, 9 m/s 2 and s = h is the height travelled.
The information above allows us to locate you. At the top of the journey in this instance, v equals 0.
2.75 * 7.9 m/s . = 21.725.
Consequently, the ball's starting speed was 10 m/s.
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the velocities and masses of four objects are shown. which one of the following is the has the inertia of the objects arranged from least to greatest ?
An object's resistance to changes in motion is measured by inertia. An object's inertia increases with its mass.
What are the objects having inertia from least to greatest?In order to arrange the inertia of the four objects shown from least to greatest, we must first determine the mass of each object.Object A has a velocity of 10 m/s and a mass of 5 kg.Object B has a velocity of 15 m/s and a mass of 10 kg.Object C has a velocity of 20 m/s and a mass of 20 kg.Object D has a velocity of 25 m/s and a mass of 15 kg.From the information provided, we can see that the masses of the objects are:Object A: 5 kgObject B: 10 kgObject C: 20 kgObject D: 15 kgTherefore, the inertia of the objects arranged from least to greatest is:Object A: 5 kgObject D: 15 kgObject B: 10 kgObject C: 20 kgInertia is directly proportional to the mass of an object, so the more massive an object is, the greater its inertia.To learn more about inertia refer:
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In order to arrange the inertia of the four objects shown from least to greatest, we must first determine the mass of each object.
Object A has a velocity of 10 m/s and a mass of 5 kg.
Object B has a velocity of 15 m/s and a mass of 10 kg.
Object C has a velocity of 20 m/s and a mass of 20 kg.
Object D has a velocity of 25 m/s and a mass of 15 kg.
From the information provided, we can see that the masses of the objects are:
Object A: 5 kg
Object B: 10 kg
Object C: 20 kg
Object D: 15 kg
Therefore, the inertia of the objects arranged from least to greatest is:
Object A: 5 kg
Object D: 15 kg
Object B: 10 kg
Object C: 20 kg
Inertia is directly proportional to the mass of an object, so the more massive an object is, the greater its inertia.
What, in layman's terms, is inertia?A body's inherent property of inertia makes it resistant to any force that would alter its motion. Acceleration could be caused by opposing forces acting on a still and moving body.
What exactly is motion inertia?Motion inertia: The fundamental property that a body has to resist any change in its motion is called inertia of motion. In other words, inertia of motion is when the body doesn't want to change its motion but wants to stay in its current state.
What motion law is inertia?Inertia refers to a body's ability to remain stationary or in motion at a constant speed. The "law of inertia" is a common name for Newton's first law.
Question incomplete:The velocities and masses of four objects are shown. Which object has the greatest inertia?
A 5kg v=2m/s
B 3 kg v=3m/s
C 4kg → v=1m/s
D 10 kg v=0m/s
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you are making a telephone out of two aluminum cans and some string. you can choose between two types of string: a 2-m length of thin cooking twine or a 2-m length of heavy rope, both used at the same tension. which type of string should you use so that you have the fastest wave speed in your telephone? (figure 1)
You should use the thin cooking twine to have the fastest wave speed in telephone.
What is wave speed?The wave speed in string is determined by tension in the string and the mass per unit length (linear density) of the string.
The speed of a wave in a string is given by ; v = sqrt(T/μ)
T -- tension and μ-- linear density.
When comparing the two types of string, thin cooking twine has smaller mass per unit length (linear density) than the heavy rope, so it would have faster wave speed.
The thinner the string, the less the density of the string and the faster the wave speed will be. Therefore, you should use the thin cooking twine to have the fastest wave speed in your telephone.
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Consider Earth to be stationary, and the moon as orbiting Earth in a circle of radius R. If the masses of Earth and the Moon are ME and Mm, respectively, which of the following best represents the total mechanical energy of the Earth-Moon system?
Total mechanical energy of the Earth-Moon system=[tex]-\frac{GM_{e} M_{m}}{2R}[/tex]
Keeping in mind Kepler's first law, the planets orbit the Sun in elliptical fashion. This implies that as a planet orbits the Sun, the separation between the centres of masses, r, will change. As r varies, this causes a change in the planet's gravitational potential energy.The system's overall mechanical energy is crucially stable throughout its orbit. A planet's gravitational potential energy will drop as it orbits in a position close to the Sun, but its velocity and kinetic energy will grow. The system's overall mechanical energy is always constant because the increase in kinetic energy balances off the system's loss in gravitational potential energy.
Total potential energy of earth and moon=[tex]-\frac{GM_{e} M_{m}}{R}[/tex]
Velocity of moon=[tex]\sqrt\frac{GM_{e} }{R}[/tex]
Kinetic energy of moon=[tex]\frac{1}{2} M_{m} v^{2}[/tex]=[tex]\frac{1}{2} \frac{GM_{e} M_{m}}{R}[/tex]
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5. liquid of some density fills a cylinder of base area a and height h. a) using the symbols provided, state the mass of the cylinder. [ 2 ] b) using your answer from a), show a formula for the pressure exerted on the base of the cylinder. [ 2 ]
Pressure in a liquid with constant density is given by the equations: p 0 = g h p = p 0 + g h. Consequently, pressure on the fluid at a depth. pressure difference = 5886 pa Area=5886*0.050 = 294 N
What does "pressure in a fluid" mean?The power per unit area is measured by fluid pressure. Altitude, velocity, or pressures in a confined container can all result in fluid pressure. A liquid has no fixed shape, hence its pressure is uniform throughout.
14)
: Pressure= force area
Force is weight of liquid = mass * gr
Area = A
O pressure = pgh
Step: 3
calculated above pressure P =pg P = pg(h₂ - h₁)
1,000 × 9.81 × (0.8 -0.2)
= 5,886.00
Pressure difference = 5886 pa
What results in fluid pressure?Similar to the air on the inside of a tire, all liquids exert pressure. Fluid particles constantly and randomly move in all directions. The particles continue to collide with one another and with anything else in their path as they proceed.the pressure difference corresponds to pressure boy puts on platform which is equal to boy's weight divided by area.
Weight = pressure * Area
=5886*0.050 = 294 N
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