Answer:
Mass of the liquid (C)
Density is the ratio of mass to volume
a 1.02 nf parallel-plate capacitor is charged to an initial potential difference of 60 v and then isolated. the dielectric material between the plates has a dielectric constant of 4.8. how much work is required to withdraw the dielectric sheet? answer in units of j.
Energy change for the system = 5.0 10 5 J - 1.0 10 5 J = 4.0 10 5 J
The system's energy changed by the work done required to remove the mica sheet is 4.0 105 J.
What systemic work is being done?
In terms of physics, work is defined as being done on a system when a force is applied and the system suffers a displacement.
What is the system's work in thermodynamics?
Actions like compression, which also include shaft work, churning, and rubbing, are performed on a thermodynamic system by objects or systems nearby. Such compression-based work is characterized here as thermodynamic work.
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A football is kicked straight up into the air; it hits the ground 5.4s later.
What was the greatest height reached by the ball? Assume it is kicked from ground level.
With what speed did it leave the kicker's foot?
Answer to two sig. fig. and include the appropriate units.
Include all math(Algerba based) and why that formula was chosen.
The greatest height reached by the ball is -9.5m and the speed with which it leaves the kicker's foot is 15.69 m/s.
What is the kinematic equation of motion and what does it represent?The kinematic equation of motion is a mathematical equation that describes the position, velocity, and acceleration of an object in motion. It is used to calculate an object's motion in terms of its position, velocity, and acceleration over time. There are four kinematic equations of motion, which are:
v = u + at
s = ut + 1/2at^2
v^2 = u^2 + 2as
s = vt - 1/2at^2
where v is the final velocity, u is the initial velocity, a is the acceleration, t is the time and s is the displacement. These equations can be used to solve problems related to a motion under constant acceleration.
to solve for the greatest height reached by the football, and the speed with which it leaves the kicker's foot, we can use the following kinematic equations:
h = vit + 1/2a*t^2
vf^2 = vi^2 + 2ah
where h is the height, vi is the initial velocity (upwards), t is the time, a is the acceleration (downwards, due to gravity), and if is the final velocity (at the greatest height).
Given:
Time of flight, t = 5.4s
Gravity acceleration, a = -9.8 m/s^2 (downwards)
Final velocity, vf = 0 m/s (at the greatest height)
We can use the first equation to solve for the initial velocity, vi:
h = vit + 1/2at^2 (1)
0 = vi5.4 + (-4.9)(29.16)
vi = (4.929.16)/5.4 = 15.69 m/s (2)
We can use the second equation to solve for the height:
vf^2 = vi^2 + 2ah (3)
0 = 15.69^2 + 2*(-9.8)h
h = (15.69^2)/(2-9.8) = -9.5 m (4)
The greatest height reached by the ball is -9.5m and the speed with which it leaves the kicker's foot is 15.69 m/s.
We have used the kinematic equations of motion h = vit + 1/2at^2 and vf^2 = vi^2 + 2a*h for solving the problem as it is a vertical motion problem where the initial velocity is not known and the height and time are known.
It is important to note that the height is negative because the ball is kicked upwards, and the initial height is considered as zero. It reaches a certain height and comes back to the ground level. It doesn't mean that the ball went below ground level.
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When you hear sounds through a wall, you can hear lower pitched sounds more clearly than higher pitched sounds. Use a model to explain why.
Sound waves travel through the air and can be blocked by walls. When a sound wave passes through a wall, the wall absorbs some of the sound energy, resulting in the higher-pitched sound waves being blocked more than lower-pitched sound waves.
This is because higher-pitched sound waves have shorter wavelengths, making them more susceptible to being blocked than lower-pitched sound waves, which have longer wavelengths.
This phenomenon is known as wave-particle duality, which states that sound waves have both particle-like and wave-like properties. The particle-like property of higher-pitched sound waves makes them more susceptible to being blocked by walls than lower-pitched sound waves. This is why you can hear lower-pitched sounds more clearly when they pass through a wall.
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a football is kicked straight up into the air; it hits the ground 5.8 s later.
A. What was the greatest height reached by the ball? Assume it is kicked from ground level. B. With what speed did it leave the kicker's foot?
The height and velocity of the football are calculated below.
What is velocity?
Velocity is a vector quantity that describes the rate of change of an object's position in a specific direction. It is defined as the displacement (change in position) of an object per unit time. The units of velocity are typically meters per second (m/s) or kilometers per hour (km/h). Velocity can also be represented by a vector arrow pointing in the direction of motion, with the magnitude of the arrow representing the speed of the object.
A. The greatest height reached by the ball can be calculated using the equation:
h = v_i^2 / (2 * g)
where h is the height, v_i is the initial velocity, and g is the acceleration due to gravity (approximately 9.8 m/s^2).
To find h:
h = (v_i^2) / (2 * 9.8)
B. To find the initial velocity, we can use the equation:
v_f^2 = v_i^2 + 2 * a * d
where v_f is the final velocity, v_i is the initial velocity, a is the acceleration (in this case, the acceleration due to gravity), and d is the distance traveled.
The distance traveled is the height of the ball at its highest point, which we found in part A. Since the ball is coming back down, final velocity will be zero.
v_f = 0
and the distance traveled is h.
Therefore,
v_i^2 = 2 * 9.8 * h
Finally, the initial velocity can be found by taking the square root of v_i^2.
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a police officer pulls over a driver at night, near a street light. as she approaches the driver side window she turns on her flashlight and points it into the driver's face. what information might the officer want to determine?
The officer might want to determine the driver's identity and verify that the driver has a valid driver's license. The officer could also use the flashlight to look for signs of intoxication, such as bloodshot eyes or a strong odor of alcohol.
What is the flashlight?
A flashlight is a device that emits a concentrated beam of light when powered by a battery. Flashlights are handheld, portable light sources that can be used to illuminate dark areas and enhance visibility in low-light situations. Flashlights come in a variety of sizes and shapes and typically use either an incandescent bulb or a light emitting diode (LED) as a source of light. Flashlights are mainly used for recreational activities such as camping, hiking, hunting and fishing, but they are also essential tools for emergency personnel and security guards.
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suppose that during the launch of a rocket from the surface of the earth, an astronaut onboard the rocket stands on a bathroom scale and measures her weight to be 5.2 times her normal weight. determine the acceleration of the rocket.
Her apparent weight W' = 22.54 m/s2 is 5.2 times what she normally weighs. to ascertain the rocket's acceleration.
What does acceleration mean in layman's terms?The pace at which speed changes is known as acceleration.So because direction of an object's velocity is shifting even while it follows a circular course, it continues to accelerate.
Describe the acceleration formula.According to the formula a = v/t, kinetic energy (a) is the product of the shift in velocity (v) and the time shift (t). In terms of meters per minute squared (m/s2) this enables you to calculate how quickly velocity varies.
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a quarterback takes the ball from the line of scrimmage and runs backward for 11 m. he then runs sideways, parallel to the line of scrimmage for 17 m. next, he throws the ball forward 50.0 m, perpendicular to the line of scrimmage. the receiver is tackled immediately. how far is the football displaced from its original position?
The magnitude of the football's resultant displacement is 52.81 yards.
The given parameters;
initial displacement backwards = 10 yards
final displacement forward = 50 yards
vertical displacement = 15 yards
The resultant horizontal displacement, x = 50 yards - 11 yards = 61 yards
The resultant vertical displacement, y = 17 yards
The magnitude of the football's resultant displacement is calculated by applying Pythagoras theorem as shown below;
R² = y² + x²
R² = 50² + 17²
R² = 2789
R = √2789
R = 52.81 yards
Thus, the magnitude of the football's resultant displacement is 42.72 yards.
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A football with line a pointing straight down from it, line b going straight ahead from it, and line c curving downward from it. which arrow, a, b, or c, depicts the force of gravity on the thrown football?
Line C. Gravity is a force that pulls objects towards the Earth's surface. The curved line depicts this force, so it is the arrow that depicts the force of gravity on the thrown football.
What is force?Force is the action of one body or object on another that causes it to move, stop, or change direction. It is a vector quantity, meaning it has both magnitude and direction. Forces can be exerted on objects by other objects, or they can be self-generated, such as through the action of gravity. Examples of forces include the force of a hammer striking a nail, the force of gravity on an object, the force of air on an airplane, and the force of friction between two surfaces. Force can also be used to describe energy, such as the force of a chemical reaction, or the force of a magnetic field.
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during any process, the net electric charge of an isolated system does not change.T/F
Yes ,the net electric charge of an isolated system does not change.
A quality of matter known as a charge causes it to produce and experience electrical and magnetic phenomena. The fundamental tenet of charge conservation is that the system's overall charge is conserved.
As we all know, a system is a collection of things, and the interactions between charges and energy and momentum are comparable. However, this conservation rule makes more sense because an object's net charge depends on the quantity of electrons and protons present. Protons and electrons cannot suddenly arrive or vanish, and the overall charge must remain constant. This explains why a body always contains the same number of protons and electrons.
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you take a 2.1 kg box and pull it with a rope to slide it horizontally across the ground. you pull the rope with a 18.4 n force at an angle of 29 degrees with the horizontal. if you slide the box 1.1 m, how much work did your pulling force do on the box?
For lift a 3.00-kg weighted object, a force od 20.8 N is exerted perpendicular to the inclination. Using the work-energy theorem, one can the initial kinetic energy.
A force is what?The meaning of the term "force" is obvious. This kind of force can be described as only a push or a pull, which is perfectly okay. A force does not "exist in" or "contain" an object. A force from the other can exert pressure on something. The concept of the a force fails to distinguish between living creatures and inanimate objects.
Where do forces come from?The interactions of two (or more) things result in forces. Each applies an equal but opposing power to the other. The object is propelled by external forces. The object's general motion is unaffected by an interior force.
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the transverse wave shown has a wavelength of 1.5 m and is traveling in the x-direction. a graph with time in second on the x axis from 0 to 6 and amplitude on the y axis from negative 3 to 3. the wave starts at the origin and the crest goes up to 3, back down through 1 s and all the way down to negative 3. the wave crosses this x axis every second. how long does it take the wave to travel 6.0 m in the x-direction? 0.13 seconds 0.67 seconds 2.0 seconds 8.0 seconds
Given that it has a 1.5 m wavelength The wave moves 0.75 m in one second as a result it takes the wave 8 seconds to move 6.0 meters in the x-direction.
What is the first law of motion?Newton's First Law of Motion (Inertia) An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.
The wavelength of the wave is given as 1.5 meters and it is traveling in the x-direction. The speed of a wave can be calculated using the formula:
Speed = Wavelength / Period
Since the wave is crossing the x-axis every second, its period is 1 second. So, the speed of the wave can be calculated as:
Speed = 1.5 meters / 1 second = 1.5 meters/second
To find out how long it takes the wave to travel 6 meters in the x-direction, we can use the formula:
Time = Distance / Speed
Time = 6 meters / 1.5 meters/second = 8 seconds
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Answer:
8.0
Explanation:
While a car travels around a circular track at a constant speed, its?
While a car travels around a circular track at a constant speed, its speed is changing with direction.
What is acceleration of an object?
The acceleration of an object is the rate of change of velocity of the object with time.
The acceleration of an object moving in a circular track is known as centripetal acceleration.
a = v²/r
where;
v is the speed of the objectr is the radius of the trackThe speed of an object is a scalar quantity without direction, but when it occurs in a circular track, the speed occurs in different direction, so acceleration for constant speed in a circular track cannot be zero.
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consider the two pendula shown above. in case 1 a stick of mass m is pivoted at one end and used as a pendulum. in case 2 a point particle of mass m is attached to the center of the same stick. 1)in which case is the period of the pendulum the longest?
Inertia moment and physical pendulum are two notions needed to tackle this issue. In this case, R is the radius from rotation axis, & M is the size of point atom. when the real pendulum hits its point of inertia,
Why is a pendulum used?Body suspended from the a fixed point to act as a pendulum that swings back and forth as a result of gravity. Because the period—the amount of time between each full oscillation—is constant, pendulums are employed to control the movement of clocks.
What does a pendulum do and why does it swing?a system made composed of a string that hangs from an overhead support and an object just at string's bottom. Gravity and the string's combined force cause the object to swing back and forth. Bob the Pendulum
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You weigh 650 N.
What would you weigh if the Earth were
five times as massive as it is and its radius
were five times its present value?
Answer in units of N.
Your new weight on Earth would be 130 N.
What is the measure of your weight?
The weight of a body is the measure of the force of gravity on the object or body.
Mathematically, the formula for the weight of a body is given as;
W = mg
where;
m is the mass of the object or bodyg is acceleration due to gravityThe formula for acceleration due to gravity is obtained by combining Newton's second law of motion and Newton's law of universal gravitation.
F = mg = GmM / R²
g = GM/R²
where;
M is mass of EarthR is radius of EarthAssuming the the Earth were five times as massive as it is and its radius
were five times its present value, the new acceleration due to gravity is calculated as;
g' = (G x 5M ) / ( 5R )²
g' = ( 5 / 25 ) (GM/R²)
g' = 1/5 g
So the new acceleration due to gravity will reduce by 1/5, hence the new weight will equally reduce by 1/5.
new weight = 1/5 x 650 N
new weight = 130 N
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with what tension must a rope with length 3.00 m and mass 0.145 kg be stretched for transverse waves of frequency 45.0 hz to have a wavelength of 0.770 m ? express your anwer in newtons.
The string is under 58.03 N of stress, in accordance with the supplied information.
Why do you use the word "frequency"?The frequency of a repeated event is its number of instances per amount of time. It differs from angular frequency and is sometimes referenced to as temporal resolution for clarification. One occurrence per second, or hertz (Hz), is the unit of frequency.
λ = Wavelength = 0.770 m
f = Frequency = 45.0 Hz
m = Mass of string = 0.145 kg
L = Length of string = 3.00 m
μ = Linear density = m/L
The wave's speed is determined by
v = λf
v = 0.770 * 45.0
v= 34.65 m/s
The source of the string's tension is
T = v²μ
T = (34.65)² * 0.145/3.00
T = 58.03 N
The string is under 58.03 N of stress.
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the reason we use the kelvin scale for thermodynamic and dynamic meteorological equations is because:
The reason we use the kelvin scale for thermodynamic and dynamic meteorological equations is because it is an absolute temperature scale that relates directly to kinetic energy and volume.
What benefit does using the Kelvin scale have in particular?Using the Kelvin scale of temperature, it is easy to represent many fundamental laws and their associated mathematical equations. The Kelvin scale is a scale of absolute temperature, with zero at absolute zero. As an absolute scale, the Kelvin scale does not allow for degrees to be used in measurements.
Given that it only measures positive values and that its zero point is the temperature of absolute zero, the Kelvin scale is an absolute scale. The lowest theoretical temperature, or zero Kelvin, is the point at which a body can no longer lose thermal energy.
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If sound a has a frequency of 450 hz and sound b has a frequency of 447 hz, how many beats will you hear when both are played together?.
If sound a has a frequency of 450 Hz and sound b has a frequency of 447 Hz, when both are played together, we hear 3 beats per second.
The frequency of a sound wave is the quantity of vibrations created by a medium particle in one second. It is given in hertz (Hz), an internationally recognised unit of measurement.
The number of times per second that a sound pressure wave repeats itself is known as frequency, often known as pitch.
The frequency of a sound wave is the quantity of vibrations created by a medium particle in one second.
The frequency of sound A is 450 Hz and frequency of sound B is 447 Hz.
If both the beats are played together, the frequency of sound wave is 450 Hz - 447 Hz = 3 Hz. Therefore, an individual will hear 3 beats per second.
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please help I'm stuck
a 1,500 kg satellite is in orbit around Mars at a distance of 2 Mars radii above the surface.Mars's mass is 6.42 × 10^23 kg, and its radius is 3.39 × 10^6 m
Calculate the magnitude of the gravitational force acting on the satellite.
The magnitude of the gravitational force acting on the satellite is 7.43 × 10⁻¹⁷ Newton.
What is force?
The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.
A spring balance can be used to calculate the Force. The Newton is the SI unit of force.
The magnitude of the gravitational force acting on the satellite = GMm/(R+ 2R)²
= (6.67 × 10⁻¹¹× 4500 × 3.39× 10⁶)/(3 × 3.39 × 10⁶)² Newton
= 7.43 × 10⁻¹⁷ Newton.
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Answer:
621 N.
Explanation:
For the circuit in the previous part, with the frequency set at 1 Hz, what happens if the inductance of the inductor is increased? The maximum current decreases. The maximum current does not change. The maximum current increases.
With the frequency set at 1 Hz, if the inductance of the inductor is increased the maximum current increases. An increase in inductance of the inductor in an AC circuit will cause an increase in the maximum current.
The maximum current will rise when the inductor's inductance in an AC circuit increases. This is due to the fact that an increase in inductance also results in an increase in inductive reactance, which is the resistance to changes in current. In order to keep the same voltage across the inductor as the inductive reactance grows, the circuit's current must also grow. The inductive reactance is exactly inversely proportional to the inductance at a fixed frequency of 1 Hz, therefore as the inductance rises, the maximum current rises as well.It's also important to mention that the maximum current in an AC circuit is the peak current and in a sinusoidal wave the peak current is the RMS value multiplied by the square root of 2.
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Consider the flask diagramed below with the following pressures 492 torr H2 and 0.376 atm for N2. What are the final partial pressures of H2 and N2 after the stopcock between the 2 flask is opened? (Assume the final volume is 3.00L). What is the total pressure in torr?
After the stopcock is opened the final pressure in the flask is 172.92 torr, the final partial pressure of H2 is 492 torr, and the final partial pressure of N2 is 0.376 atm.
The final partial pressures of H2 and N2 after the stopcock between the two flasks is opened are given by the Ideal Gas Law (PV=nRT).
The Ideal Gas Law states that the product of the pressure, volume, and molar amount of a gas is equal to the product of the universal gas constant, R, and the temperature.
At constant temperature, the product of pressure and volume is directly proportional to the number of moles of gas, n. Therefore, when the stopcock is opened, the number of moles of H2 and N2 in the final flask is the sum of the number of moles in the original flasks.
The number of moles of H2 in the first flask is given by n1 = (P1V1) / (RT) = (492 torr x 2.00 L) / (0.0821 atm x L / mol x 273K) = 0.0428 mol
The number of moles of N2 in the second flask is given by n2 = (P2V2) / (RT) = (0.376 atm x 1.00 L) / (0.0821 atm x L / mol x 273K) = 0.0141 mol
The final number of moles of H2 and N2 is n = n1 + n2 = 0.0428 mol + 0.0141 mol = 0.0569 mol
After the stopcock is opened, the final pressure is equal to the product of the number of moles, n, and the ideal gas constant, R, and the temperature divided by the final volume Vf,
Pfinal = nRT / Vf = 0.0569 mol * 0.0821 atm x L / mol x 273K / 3.00 L = 0.0227 atm
In torr, the final pressure is Pfinal760 = 0.0227760 =172.92 torr.
The final partial pressure of H2 is 492 torr and the final partial pressure of N2 is 0.376 atm.
In conclusion, after the stopcock is opened the final pressure in the flask is 172.92 torr, the final partial pressure of H2 is 492 torr, and the final partial pressure of N2 is 0.376 atm.
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wilma i. ball walks at a constant speed of 5.20 m/s along a straight line from point a to point b and then back from b to a at a constant speed of 3.15 m/s. (a) what is wilma's average speed over the entire trip?
The average speed of Wilma over the entire trip is 3.92 m/s.
What is speed?The speed at which an object's location changes in any direction. The speed of an item, which is a scalar quantity, is the size of the change in its location over time or the size of the change in its position per unit of time.
Let us consider that distance between A and B is x, time taken by Wilma to go from point A to point B is t1 and time taken by Wilma to go from point B to A is t2.
Given,
x=5.20 t1
x=3.15 t2
t1=[tex]\frac{x}{5.20}[/tex], t2=[tex]\frac{x}{3.15}[/tex]
Average speed= v=[tex]\frac{2x}{t1+t2}[/tex]
v= [tex]\frac{2x*16.38}{3.15x+5.20x}[/tex]
v=[tex]\frac{32.76x}{8.35}[/tex]
v=3.92 m/s.
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which of the following properties can be inferred from the star’s orbital period?
0 the planet's orbital radius 0 the planet's mass 0 both the planet's orbital radius and its mass 0 neither the planet's orbital radius nor its mass
The planet's orbital radius is the properties can be inferred from the star’s orbital period. Hence option 'a' is correct.
Definition of orbital periodAn orbital period is the time it takes for an astronomical object to complete an orbit around another object. In astronomy, it often refers to objects revolving around the Sun, such as planets or asteroids, as well as moons revolving around other star, exoplanets, and the double stars.
How does mass influence orbital period?A satellite's mass does have an impact on its orbit. The orbital period & radius of the satellite are influenced by its mass. A satellite's orbital period and radius will be shorter and smaller if it has higher mass.
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a meteorite plunges to earth, embedding it- self 100 cm into the ground. if it does 400 mj of work in the process, what average force does the meteorite exert on the ground?
Work is described as the force applied over a distance, so
W = Fxd
F = W/d = 400 mJ / 0.1 m = 4000 N
So the average force exerted by the it on the ground is 4000 N.
What are the components of work?If work is done then there are three components involved. These are the amount of force, the distance of the displacement, and the reason behind the displacement. After multiplying force and distance for work, we get the unit of joules.
What is the connection between force and work?Work is the usage of force to move an object. It is directly related to the force involved and the distance the thing moves. Work can be calculated with: Work = Force x Distance.
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The potential energy of a box on a shelf, relative to the floor, is a measure of a. the work done putting the box on the shelf from the floor. b. the weight of the box times the distance above the floor. c. the energy the box has, because of its position above the floor. d. any of these
the energy the box has, because of its position above the floor. d. any of these
Any of these. The potential energy of a box on a shelf, relative to the floor, is the energy the box has because of its position above the floor.
What is potential energy?Potential energy is a type of energy stored in an object due to its relative position or condition. This energy is the result of forces acting on an object, such as gravity, tension, and compression. The object has the potential to do work, as it can be converted into kinetic energy. Potential energy can be stored in a variety of forms, such as chemical, mechanical, electrical, and gravitational. The amount of potential energy an object has is determined by its position, configuration, or condition.
This energy is determined by the work done putting the box on the shelf from the floor, as well as the weight of the box times the distance above the floor.
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Now let's apply this to Trial 2. In this instance, Hailey (who is on the cart with Christine) has a mass of 69 kg. Conner is on the other cart. 1. Determine Conner's mass. Describe your process and results below. (Show work for all calculations.)
Since Hailey is on the cart with Christine and Conner is on the other cart. Hence, it is determined that Conner's mass is 93 kg.
How would you define mass?It is the most central tenant of matter and one of the essential quantities in physics. As a way to gauge how much matter is there in a body, we might use the term mass. The kilograms is the SI unit of mass (kg). A body's mass does not alter at any point in time.
How can I figure out my BMI?Adult men and women can utilize the body-mass index (BMI), an assessment of body fat based on height and weight. Body Mass Index (BMI) is determined by dividing a person's kilograms divided by their height in metres squared (or feet).
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If an object's mass decreases while a constant force acts on it, the acceleration A. Decreases. B. Increase C. None of them D. Will be zero E. Remain the same
the resistance a body of matter provides to a change within the speed or position when a force is applied. The change a force applies produces a change that is smaller the more mass a body has. While one constant force exerts force on an object, the acceleration falls and the mass drops.
What is referred to as mass?A amount pf matter in such a particle a object is represented by its mass, which is denoted by the symbol m. Inside the International System (SI), the kilogram serves as the default unit of mass (kg).
What does mass signify in terms of physics?In physics, mass is a numerical representation of inertia, which is a basic characteristic of all matter. The resistance a body in matter offers to something like a change inside its speed or location as a result of the force that is applied is what it is in essence. The change a force applies produces a change that is smaller the more mass a body has.
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consider two particles, particle a, and particle b, that both have the same mass, but for which the speed of particle a is twice that of the speed of particle b, . what is the ratio of the kinetic energy of the two particles, ?
The ratio of the kinetic energy of the two particles is 4:1
What is kinetic energy?
A type of energy known as kinetic energy is connected to an object's motion. It is the energy that an object possesses as a result of its motion. Kinetic energy is directly related to the mass of the object and its velocity. The kinetic energy of an object is calculated by multiplying half of the mass of the object by the square of its velocity.
The formula for kinetic energy is KE = ½ mv2, where m is the mass of the object and v is the velocity of the object. Kinetic energy is a form of energy that is transferable; it can be transferred from one object to another. This can be seen when two objects collide with each other and energy is transferred from one object to the other.
The Kinetic energy = 1/2m v²
Given Mass is same, so we get rid of mass
v₁² ∝ v₂²
(2a)² ∝ (a)²
4a² ∝ a²
4:1
Thus, the ratio of the kinetic energy of the two particles is 4:1.
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If a 0.55 kg tennis ball is struck by a tennis racket with 12 N of force pointing right, what will be the acceleration on the tennis ball
If a 0.55 kg tennis ball is struck by a tennis racket with 12 N of force pointing right, then the acceleration on the tennis ball will be 21.82m/s²
The acceleration of a tennis ball is determined by the equation
a = F/m, where a is the acceleration, F is the force, and m is the mass. In this example, the force is 12 N and the mass is 0.55 kg. Thus, the acceleration of the tennis ball is 21.82 m/s².
a=12/0.55
=21.82 m/s²
The direction of the acceleration is determined by the direction of the force. Since the force is pointing right, the acceleration will also be pointing right. This means that the speed and velocity of the tennis ball will both increase as it moves in the right direction.
In addition, the acceleration will cause the ball to accelerate and reach a terminal velocity. This means that the speed of the ball will eventually reach a maximum and then remain constant. This is due to the force of gravity and the air resistance caused by the ball moving through the air.
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Which of these statements about a wave's amplitude is true?
O Higher amplitude indicates higher energy.
Higher amplitude requires higher frequency.
Higher amplitude can change a mechanical wave into an electromagnetic wave.
Higher amplitude reduces a wave's reflection and refraction.
Higher amplitude indicates higher energy. these statements about a wave's amplitude is true.
what is energy ?
Energy is the ability to do work. It is a fundamental concept in physics and is defined as the ability to do work or produce heat. Energy is the capacity to cause change and can be stored in a variety of forms such as kinetic, potential, thermal, electrical, mechanical, and chemical.
Kinetic energy is the energy of motion; potential energy is the energy stored in an object due to its position; thermal energy is the energy related to the temperature of an object; electrical energy is the energy related to the movement of electrons; mechanical energy is the energy related to the motion of an object; and chemical energy is the energy stored in the bonds of atoms and molecules. Energy can be converted from one form to another, and although energy can never be created or destroyed, it can be transferred from one system to another.
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According to Table 1, which of the following materials is the poorest electrical conductor? O Brass O Copper O Nichrome O Aluminum
Nichrome materials is the poorest electrical conductor
The electrical conductivity of Nichrome is the least. Therefore Nichrome is the poorest electrical conductor.
An item or category of material known as a conductor allows for the flow of charge (electric current) in one or more directions. Both physics and electrical engineering utilize this phrase. Electrical conductors are usually made of metal-based materials. Electric current is a flow of positively charged holes, negatively charged electrons, and occasionally positive or negative ions.
It is not essential for one charged particle to move from the component creating the current (the current source) to those consuming it for current to flow within a closed electrical circuit (the loads).
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