A mouse stepping into a mouse trap Here is an illustration of potential energy becoming kinetic energy:
In plain English, what is kinetic energy?The known as kinetic, or kinetic energy, can be seen in the movement of an item or subatomic particle. Kinetic energy is present in every object moving and particle. Kinetic energy is present when something moves, such as a guy walking, a baseball soaring through the air, a piece of food dropping from a table, or a charged particles in such an electric field.
What makes kinetic energy so special?As we've already seen, kinetic energy rises when weight and/or speed rise, and KE doesn't change unless an object accelerates or decelerates. Translation and rotation kinetic energy are the two primary subtypes of kinetic energy.
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Suppose a cart with four wheels and a disk whose mass is equal to the total mass of the cart roll down the ramp. Which, if either, has more gravitational potential energy at the top?
more of its gravitational potential energy becomes translational kinetic energy and less becomes rotational. slides down the ramp without friction.
What is the formula for kinetic energy?= 1/2 m v2 Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.
What are the factors affecting potential and kinetic energy respectively?The amount of potential energy depends on the object's mass, the strength of gravity and how high it is off the ground. When you drop the object, this potential energy is converted into kinetic energy, or the energy of motion. Kinetic energy depends on an object's mass and its speed.
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Its elastic acceleration energy is converted more into translational kinetic energy than into rotational energy. glides without resistance down the ramp.
What is the kinetic energy equation?= 1/2 m v2 The relationship between kinetic energy and an object's mass and square from its velocity is direct: K.E. = 1/2 m v2. The kinetic energy is measured in g / kg body equation per second squared if the mass is measured in kilograms or the velocity is measured in meters per second.
What variables impact kinetic and potential energy, respectively?The mass, gravitational pull, and height above the earth all affect how much potential energy an item has. This amount of energy is transformed into kinetic energy, and or energy that moves an item when it is dropped.
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a stone is tied to a string and whirled in a vertical circle at a radius. which of the following cannot be true?
The stone is travelling in a straight line can not be true in a vertical circle at a radius.
What is vertical circle?
A vertical circle is a path that follows a vertical line in a three-dimensional space. It is a type of circular trajectory, with the center point of the circle vertically above or below the starting and ending points of the path. Vertical circles are used in mathematics and engineering to describe the motion of objects in space. The path of a vertical circle is a helix, which is a spiral with a constant radius, and can be defined by a parametric equation. Vertical circles can be used to define the motion of a satellite, or an aircraft in a corkscrew maneuver. In terms of physics, a vertical circle is an example of a non-uniform circular motion, as the speed of the object changes throughout the path.
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Complete Question
a stone is tied to a string and whirled in a vertical circle at a radius. which of the following cannot be true?
A) The stone is travelling in a straight line
B) The stone is travelling in a circular path
C) The stone is travelling at a constant speed
D) The stone is travelling in an elliptical path
TRUE/FALSE. without the force of friction, people would not be able to walk. please select the best answer from the choices provided.
People couldn't walk if it weren't for the force of friction. Please select the response that, among the given options, is truest.
the statement is true.
What do you call friction?A solid thing cannot move over another solid object without encountering friction. The four basic types of friction are fluid friction, rolling friction, sliding friction, and static friction.
How does friction in Example work?Friction is defined as the rubbing of two bodies together. the resistance to relative motion of two bodies in contact, such the friction of sandpaper on wood. Oil lowers friction in an automobile engine.
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The fundamental order and arrangement of structure, control layers and cladding in building enclosures is:
a. the same regardless of climate zone, precipitation exposure, indoor climate class, and building energy profile type.
b. dictated exclusively by the climate zone.
c. entirely determined by the precipitation exposure.
d. strongly influenced by the indoor climate class.
e. for the most part a function of the building energy profile type.
The fundamental order and arrangement of structure, control layers and cladding in building enclosures is strongly influenced by the indoor climate class.
What is the difference between structure, control layers, and cladding in a building enclosure? A building enclosure is a combination of components that enclose a building and protect it from the elements. Structures, control layers, and cladding are all components of a building enclosure. Structures are the components of a building that provide the necessary strength and stability to the structure. This includes framing, floors, walls, and roofs. Control layers act as a barrier to moisture and air infiltration. These layers include insulation, air barriers, and house wraps. Cladding is the outermost layer of a building enclosure, and provides aesthetic appeal, as well as additional protection from the elements. This layer typically consists of siding, stucco, brick, and other exterior finishes. All of these components of a building enclosure work together to protect the building from the elements and provide a comfortable living space within. Structures provide the necessary strength and stability, control layers provide barriers to moisture and air infiltration, and cladding provides a protective layer that also adds aesthetic appeal.To learn more about cladding refer to:
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b. consider the circuit at right. all of the bulbs in the circuit are identical. assume that the battery is ideal. the switch is initially closed. rank the brightness of the four bulbs from brightest to dimmest. if two or more bulbs are equal in brightness, indicate that in your ranking. please put your response in parentheses. for example: (a
The resistance of parallel connection will grow as soon as the switch is opened, increasing the bulb network's overall equivalent resistance. Ohm's law states that with constant battery voltage, the current flowing through bulb A—which is equivalent to the network's overall current—will drop.
What purposes might Ohm's law serve?Ohm's law is employed to verify the fixed values of circuit elements such voltage supplies, voltage dips, and current levels.
What exactly does Ohm's law say?The current through with a resistor between two places is directly proportionate to the voltage from across two points, according to Ohm's law.
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Yanni is sitting in the stands watching a football game. The quarterback runs forward toward the end zone and throws a pass straight downfield to a player for a touchdown. The quarterback ran at a speed of 8 m/s and threw the ball with a speed of 15 m/s.
Which statement is supported by this scenario?
The quarterback in this scenario ran at a speed of 8 m/s and threw the ball with a speed of 15 m/s.
Which statement support this scenario?This scenario supports the statement that the quarterback has a greater speed when throwing the ball than when running.This is likely because throwing a ball requires a different set of muscle movements and techniques than running, and the quarterback was able to generate more force when throwing the ball than when running.Additionally, throwing a ball requires different timing and coordination than running, which could also contribute to the difference in speed.It's also possible that the quarterback was able to use his forward momentum while running to add additional speed to the throw.Overall, the scenario supports the statement that the quarterback has a greater speed when throwing the ball than when running, as the 15m/s of the ball throw is greater than 8m/s of running.To learn more about quarterback run refer:
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A person is riding their bicycle along a straight road at a speed of 7.9 m/s. In total, they have a mass of 88 kilograms. What is the kinetic energy, in joules, of the person with their bicycle?
The cyclist's kinetic energy, measured in joules, is 2746.04 J. 125 Joules are the same as the kinetic energy, or (1/2 * 10 kg) * 5 m/s2.
How is kinetic energy calculated?The energy that drives motion is known as kinetic energy (KE). Kinetic energy is the force that drives motion. The mass and speed of an object moving determine how much kinetic energy it has.
How can kinetic energy be calculated given mass and speed?According to classical physics, kinetic energy (KE) is determined by multiplying the mass of an item by the square of its velocity, or 1/2*m. As an illustration, consider an object having a mass of 10 kg (m = 10 kg) and a speed of 5 m/s (v = 5 m/s).
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if the acceleration was constant for two seconds, what happened to the acceleration from 1 to 2 secdons
If the acceleration was constant for two seconds, that means that the acceleration did not change from 1 to 2 seconds.
Constant acceleration means that the rate of change of velocity is the same over a certain period of time. Therefore, from 1 to 2 seconds, the acceleration remained the same. The velocity of an object will change with time if the acceleration is constant.
The acceleration is the rate of change of velocity per unit of time, so if the acceleration is constant, the velocity changes at a constant rate. In this case, the object's velocity will be increasing at a constant rate during the time interval from 1 to 2 seconds.
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Given the sequence of nucleotides in this DNA strand: GTCCGA, what should the corresponding strand of DNA read?
A small bead with a mass of 150 g slides along a semicircular wire with a radius of 20 cm that rotates about a vertical axis at a rate of 3 revolutions per second. Find the value of θ for which the bead will remain stationary relative to the rotating wire. (Assume the bead slides without friction.)
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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Suppose a constant force acts on an object. The force does not vary with time or with the position or the velocity of the object. Start with the general definition for work done by a force F.dr and show that the force is conservative. (b) As a special case, suppose the force F= (3i+4j)N N acts on a particle that moves from O to C in above figure. Calculate the work done by F on the particle as it moves along each one of the three paths shown in the figure and show that the work done along the three paths is identical.
The force is independent of time, the object's position, and its velocity. start with the definition of jobs completed by a force in general The force is conservative, as demonstrated by F.dr. = 15.0J+20.0J=35.0J
What is meant by velocity?The displacement an object / particle experiences with regard to time is expressed vectorially as velocity. The meter per second (m/s) is the accepted unit of velocity magnitude, sometimes referred to as speed. Alternately, velocity magnitude can be expressed in centimeters per second (cm/s).
Who made the discovery of velocity?By calculating the average speed over a brief period of time that includes the instant in question, one can estimate the speed of a point anywhere at given instant. For precisely calculating the values of a instantaneous velocity, Isaac Newton developed the differential calculus.
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If the electric field is zero throughout a certain region of space, is the potential also zero in the region?
No, the gradient of the potential is the field. Therefore, in any area where the potential is constant, the electric field is zero. Constant does not always equate to zero.
What does a point's electric field appear like in space?The force per unit charge that an infinitesimally small positive test charge would experience if held fixed at a given point in space is the concept of the electric field at that location.
Is there no electric field in a vacuum?According to Gauss's law, the divergence of the electric field and the enclosed surface integral of the electric field are both zero in a vacuum, which is the absence of electric charges. Electric potential and electric field are both 0 at infinity if only a single point is taken into consideration.
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FILL IN THE BLANK Before driving, you should check for these things: obstructions behind the car, ____, and which direction your vehicle's wheels are turned.
Before driving, you should check for these things: obstructions behind the car, leaking fluids, and which direction your vehicle's wheels are turned.
Driving Safety:
Safe driving is important not only for the driver, but also for everyone involved inside and outside the vehicle, such as pedestrians and other road users.
Driving safely includes what you do before, during and after driving a vehicle to ensure your safety.
SAFETY TIPS BEFORE DRIVING
Before you drive, make sure that:There are no obstacles behind the vehicle and the road is clearThere are no fluid leaks Brakes and clutches are functioning properly to avoid fires and other accidents.Which direction should the vehicle wheels be turned to properly turn the steering wheel in the correct direction.Please adjust your seat.Adjust the mirrors (rear and side). Adjust the steering wheel so you can reach all controls and have a clear view of the road.Please adjust the headrest.Fasten your seat belt and adjust to a comfortable and safe position. Make sure all passengers are in the vehicle and have their seatbelts fastened. Start the engine, check your car's fuel level, and watch for warning lights on your dashboard. If the warning light is on, please refer to the following link: It explains the various warning lights on the dashboard, what they mean, and what to do before driving.Drive responsibly and safely.Therefore, Before driving, you should check for these things: obstructions behind the car, leaking fluid, and which direction your vehicle's wheels are turned.
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How do you use Cavalieri's principle to find volume?
According to Cavalieri's principle, if two solids are sandwiched between two parallel planes and any plane perpendicular to these planes meets them with cross-sections of equal area, the solids' volumes are also equal.
When used on increasingly intricate shapes, Cavalieri's approach demonstrates its effectiveness (or when the rectangles are allowed to become infinitely thin.) Two solids (planar figures) must have equal volumes and the same heights and areas (lengths) on every level according to a brief formulation (areas). The idea represented an early step toward what is now called the Integral Calculus.
Let's identify a relationship between the volumes of a cylinder, a cone, and a sphere as an amazing use of Cavalieri's principle.
Assume that a cylinder's height is equal to the radius of its base (r) and that the cylinder has an inscribed cone with the same base and height as the cone.
The area of the cone's cross-section at level y is equal to y², calculated from the bottom up. The area of the remaining ring (at level y) is equal to (r² - y²) because the cross-section of the cylinder, regardless of its height, equals r². This is the exact area of the cross-section of the hemisphere of radius r at level y according to the Pythagorean theorem. According to Cavalieri's principle, the cylinder's volume less the cone's volume equals the hemisphere's volume.
A cone's volume is one-third of a cylinder's volume, which is defined as Base × Height. The volume of the hemisphere is, therefore 2/3 that of the cylinder, and the volume of the entire sphere is 4/3 that of the cylinder. The latter is r³, hence the sphere's volume is 4/3 r³.
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The drawing shows an edge-on view of two planar surfaces that intersect and are mutually perpendicular. Surface 1 has an area of 1.5 m2, while surface 2 has an area of 3.6 m2. The electric field E in the drawing is uniform and has a magnitude of 252 N/C.(a) Find the electric flux through surface 1.________________ N·m2/C(b) Find the electric flux through surface 2._________________N·m2/C
The drawing shows an edge-on view of two planar surfaces that intersect and are mutually perpendicular. Surface (1) has an area of 1.70 m².
What do you know about Surface?Surface is a line of tablet computers developed by Microsoft and sold under their brand. Surface tablets have a 10.6-inch wide touch screen display and come with USB support, dual Wi-Fi antennae, a built-in kickstand to make the tablet stand up by itself and an optional keyboard that doubles as the tablet's cover.
What does Surface mean in tech?A surface computer is a computer which interacts with users through an ordinary object instead of through monitor and keyboard. Commands are input through the use of bare hands by touching or dragging the surface .
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Stretched 1 cm beyond its natural length, a rubber band exerts a restoring force of magnitude 2 newtons. Assuming that Hooke's Law applies, answer the following questions: (a) How far (in units of meters) will a force of 3 newtons stretch the rubber band? Distance stretched 8 m (b) How much work does it take to stretch the rubber band this far?
A force of 3N will stretch the rubber a distance of 0.015 m. It takes 0.045 J of work to stretch the rubber band.
What does Hooke's law mean?According to Hooke's law, the amount of force used to stretch an elastic item is proportional to that force. The object won't rebound if it is stretched too far, though. Only when an elastic object is not overextended does Hooke's Law hold true.
What are the instances of Hooke's laws in the actual world?The nature of a balloon is elastic. It expands when air molecules are blasted through it. Similar to that, it gets smaller when it is expelled. It operates according to Hooke's law because the balloon's expansion and compression depend on the force with which air is pumped into it.
From Hooke's law, as long as the elastic limit is not exceeded the extension is directly proportional to the force applied.
(a)
F = Ke
F = force
K = force constant
e = extension
So;
2 N = K(1 × 10^-2) m
K = 2 N /(1 × 10^-2) m
K = 200 N/m
Hence;
3N = 200 N/m × a
Where a is the extension in meters
a = 3N/200 N/m
a = 0.015 m
(b)
Work (w) = Force (f)×distance (a)
Work (w) = 3 N×0.015
Work (w) = 0.045 J
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find it difficult to answer
The position of the body at time t is s (t) = -3 + 2t - 2 sin(2t³).
What is the position of the body at time t?The position of the body at time t is calculated by applying the second kinematic equation as shown below.
s = s₀ + vt + ¹/₂at²
where;
v is the initial velocitys₀ is the initial positiona is the acceleration t is the timeThe position at time t is calculated as;
s (t) = -3 + 2t + ¹/₂( - 4sin 2t )t²
s (t) = -3 + 2t - 2 sin(2t³)
Thus, the final position of the body is a function of the acceleration, initial velocity and time of motion of the body.
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Two point charges are separated by 7.0 cm . The attractive force between them is 18 N . Suppose that the charges attracting each other have equal magnitude.
- Rearrange Coulomb's law and find the magnitude of each charge.
According to the above statement, each charge has a magnitude of 2.23μC according to Coulomb's law.
What does Coulomb's law aim to achieve?When two items behave as point charges, the force between them may be accurately described by the Coulomb's law equation. When interacting with other charged objects, a spent conducting sphere behaves as though its whole charge were concentrated in its center. According to Coulomb's law, the force F between two triangular charges, Q1 and Q2, in a void is proportional to the inverse of their separation, r, and proportional to their product, Q1.
Coulomb's law states:
F = KQ²/r²
18 = (9*10⁹)*Q²/0.07²
Q = 2.23*10⁻⁶C or 2.23 μC
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the formula gives the time it takes in seconds, t, for a pendulum to make one full swing back and forth, where l is the length of the pendulum, in feet. to the nearest foot, what is the length of a pendulum that makes one full swing in 1.9 s? use 3.14 for . ft
Answer:
3 ft
Explanation:
You want the length of a pendulum that has a period of 1.9 seconds.
Pendulum periodThe period of a pendulum is given by the formula ...
T = 2π√(L/g)
LengthSolving for the length, we find ...
L = g(T/(2π))²
Using the given period, we find the length to be ...
L = (32 ft/s²)(1.9 s/(2·3.14))² ≈ 2.93 ft ≈ 3 ft
To the nearest foot, the length of the pendulum is 3 ft.
Using the exact exponential treatment, find how much time is required to charge an initially uncharged 100-pF capacitor through a 75.0-M Ω resistor to 90.0% of its final voltage.
17.3 ms are needed to charge a 100-pF capacitor to 90.0% of its ultimate voltage after passing it through a 75.0-M resistor.
What function does a capacitor serve?
a capacitor is an electrical energy storage device that consists of two conductors that are isolated from one another and placed near to one another. A straightforward illustration of one such storage device is a parallel-plate capacitor.
What is a capacitor and how does it work?
In an electrical circuit, a capacitor is a component that is used to hold charges. A capacitor operates under the premise that when an earthed conductor is moved close to a conductor, its capacitance increases noticeably.
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Newton's third law of motion states that for every action there is an equal and opposite reaction. The balloon travels in the opposite direction as the air escaping from it. So when gas is released from the balloon it pushes against the outside air and the outside air pushes back. As a result of this the rocket is propelled forward by the opposing force. This opposing force is thrust.
The law working behind the balloon moving forward when the air escapes from it is Newton's Third Law of Motion.
Newton's Third Law of Motion states that for every action in nature, there is an equal and opposite reaction. If object A exerts a force on object B, object B also exerts an equal and opposite force on object A.
When a fully inflated balloon is released, the air molecules coming out of the balloon to strike the outside air molecules or it pushes the outside air molecules and the outside air molecule pushes the balloon back. The force experienced by the balloon is called thrust.
This is the same principle used for the movement of Rockets in space.
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In the figure below, ammonia gas t hydrochloric acid gas diffuse & react a)state and explain the observations made after. some time. If the experiment was performed performed at high temp you will expect it to take longer for shorter time to form a white deposit. Explain
Explanation:
The reaction you are describing is the reaction between ammonia gas (NH3) and hydrochloric acid gas (HCl). When these two gases come into contact, they diffuse and react to form a white solid deposit of ammonium chloride (NH4Cl).
If the experiment was performed at high temperature, you would expect it to take a shorter time for the white deposit to form. This is because at higher temperatures, the gases will have more kinetic energy and move faster, increasing the rate of collision between the gases and therefore the rate of the reaction. As a result, the white deposit will form more quickly at high temperatures than it would at lower temperatures.
It's also important to note that the rate of reaction also depends on the concentration of the reactants. So if the concentration of the reactants is increased, the reaction rate will increase and the white deposit will form faster.
In summary, the reaction between ammonia gas and hydrochloric acid gas forms a white solid deposit of ammonium chloride. The rate of reaction is affected by temperature and concentration of reactants, at higher temperatures and higher concentration, the white deposit will form faster.
The velocity of a machine element over a 10 second period is:
V=2.5t m/s 0
V=10 m/s 4
If the element represents aerodynamic drag, approximated by the characteristic F=CV^2 determine the power absorbed as a function of time, and the total energy dissipated if C= 1.0 N-s^2/m^2
The total energy dissipated over a 10 seconds period is 78125 Joules.
What is power that absorbed as a function of time?The velocity of the machine element over a 10 second period is represented by the equation V = 2.5t m/s, where t is the time in seconds.The aerodynamic drag on the element is approximated by the characteristic equation F = CV^2, where C is a constant (1.0 N-s^2/m^2 in this case) and V is the velocity of the element.To determine the power absorbed as a function of time, we can multiply the force of drag by the velocity: P = FV = CV^3.Substituting in the given values, we get P = (1.0 N-s^2/m^2)(2.5t m/s)^3 = 31.25t^3 WTo determine the total energy dissipated, we can integrate the power over the time period of 10 seconds: E = ∫Pdt from 0 to 10 seconds.Substituting in the given power equation, we get E = ∫(31.25t^3) dt from 0 to 10 seconds.Solving the integral gives E = (31.25/4)t^4 from 0 to 10 seconds.Substituting t = 10 in the above equation, we get E = 31.25 * 10^4/4 = 78125 J (Joules)So, the total energy dissipated over a 10 seconds period is 78125 Joules.To learn more about power refer:
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Two rocks weighing 5 newtons and 10 newtons, respectively, fall freely from rest near the Earth's surface. After 3 seconds of free-fall, compared to the 5 newton rock, the 10-newton rock has greater:(1 ) acceleration(2 ) height(3 ) momentum(4 ) speed
After 3 seconds of free-fall, compared to the 5 newton rock, the 10 newton rock has greater momentum.
We have 4 options:
1) Acceleration
This option is not correct as the two rocks will have the same acceleration due to the fact that air friction is neglected.
2) Height
This option is not correct as both the rocks are freely falling from rest near Earth's surface at the same rate. Heights will be same.
3) Momentum
This option is correct as rocks have same velocity but different masses. Momentum can be be written as:
p = mv,
where p: Momentum
m: Mass
v: Velocity
Therefore, momentum of 10 newton rock will be greater in magnitude than momentum of 5 newton rock.
4) Speed
This option is not correct as both rocks have same acceleration. Hence, their speeds will be the same.
Therefore, option 3) Momentum is correct.
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a system that consists of a single spring stores a total elastic potential energy e when a load is added to the spring. another identical spring connected in parallel is added to the system. the same load is now applied to the parallel springs.
The spring is added to a system that uses just one spring to store an entire elastic potential load. A second identical spring was attached to the system.
How can you tell whether a spring is in series or parallel?When a load is applied to a system made up of a single spring, the system's total elastic potential energy, e, is stored. The system is expanded by adding a second similar spring connected in parallel. The parallel springs are now subjected to the same load.
More broadly, two or more springtime are in sequence when any stressor given to the ensemble applies to each spring with changing magnitude, and the extent of strain (deflections) of the ensembles is equal to the total of the strains of the springs.
In a sentence, what does the word "parallel" mean?Repetition of a specific grammar form within a sentence is known as parallel structure (also known as parallelism). A parallel construction is made when all of the items or concepts being compared in a sentence adhere to the same grammatical structure. Example False Parallel: In addition to midday naps, Ellen enjoys hiking and attending rodeos.
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The mineral hematite has a density of 5.25 g/cm^3. The mineral magnetite has a density of 5.15 g/cm^3. You find a rock that could be either magnetite or hematite. Taking the rock back to the lab, you measure its volume to be 53 cm^3 and its mass to be 276 g. Do you know the volume and mass with enough precision to determine if the rock is either hematite or magnetite? Which mineral do you think it is?
Common iron-oxides like magnetite and hematite can be found in sedimentary, metamorphic, and igneous contexts and are linked to a wide range of deposit types.
In what mineral are magnetite and hematite found?Hematite, which is the most prevalent type of iron oxide in the earth's crust, is a chemical compound consisting of oxygen and iron (Fe2O3). Magnetite is another type of it (Fe3O4).
Hematite versus magnetite: which is the better iron?The purest iron ore, magnetite, has an extremely high iron content of up to 70%. Excellent magnetic properties make it very useful in the electrical industry. Hematite ore is the most important industrial iron ore in terms of utilisation, however it contains somewhat less iron than magnetite.
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The demand for the lighting of a small village is 50 A at 200 V. This is supplied from a dynamo
of a distance station. The generated voltage being 220 V. Compute the following:
B2.1 Resistance of the leads from the dynamo to the village
B2.2 The number of units of energy (kwh) consumed in 10 hours in the village
B2.3 The number of units of energy (kwh) wasted in the leads in the same time
B2.4 Draw the equivalent circuit of the power suppl
(1) The resistance of the leads from the dynamo to the village is 4.4 ohms.
(2) The number of units of energy consumed in 10 hours in the village is 100 kWh.
(3) The unit of energy wasted in the leads in the same time is 11 kWh.
What is the resistance of the circuit?
The resistance of the leads from the dynamo to the village is calculated by applying the following formula.
V = IR
R = V / I
where;
V is the voltage suppliedI is the currentR = ( 220 V ) / ( 50 A )
R = 4.4 ohms
The unit of energy consumed in 10 hours is calculated as follows;
P = IV
P = 50 x 200
P = 10,000 W = 10 kW
In 10 hours, E = Pt
E = 10 kW x 10 hrs
E = 100 kWh
The unit of energy wasted in the leads in the same time;
E = I²R
E = ( (50² ) x ( 4.4 ) ) / 1000
E = 11 kWh
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When a thin glass tube is put into water, the water raises 1.4 cm. When the same tube is put into hexane, the hexane raises only 0.4 cm. Explain the difference.
Dipole is the force that is most prominently felt at the glass's surface.Hexane interacts with the glass in a non polar manner, producing only week adhesive interactions.
Make certain each sentence is complete before submitting your answer ?Dipole is the force that is most prominently felt at the glass's surface.Water interacts with the only weak dispersion strong hydrogen bonding polar glass because it is polar and produces sticky contacts.Hexane interacts with the glass in a non polar manner, producing only week adhesive interactions.The complete question is,
Water rises 1.4 cm when a thin glass tube is inserted into it.Hexane barely rises 0.4 cm when the same tube is submerged in hexane.To best describe the distinction, complete the phrases.Place the words in the proper sentence blanks.
Before submitting your response, make sure all of your sentences are complete.
1. The strongest force detected at the glass surface is:
2. Water is __________ and interacts with only weak hydrogen-bonding polar glass to produce sticky contacts.
3. Hexane reacts and is _____, causing sticky interactions that are ____ with the glass.
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a cyclist rides 6.8 km east for 19.4 minutes, then he turns and heads west for 4.1 km in 5.8 minutes. finally, he rides east for 15.3 km, which takes 38.6 minutes. take east to be the positive direction.(a) What is the final displacement of the cyclist? (b) What is his average velocity?
A cyclist rides 8.0 km east for 20 minutes, then he turns and heads west for 8 minutes and 3.2 km. Finally, he rides east for 16 km, which takes 40 minutes.
What is the difference between a bicyclist and a cyclist?A cyclist (or bicyclist) is someone who rides a bicycle. A biker is someone who rides a motorcycle. These terms are an ongoing subject of controversy, especially in cyclist circles.
Is it called biking or cycling?Bicycle magazines seem to use the word biking to refer to the act of riding a motor bicycle. However, some observed that cycling is used by more formal writers, while biking is usually part of a more informal and colloquial language.
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A mass is oscillating on a frictionless surface at the end of a horizontal spring. Where, if anywhere, is the acceleration of the mass zero.a. At x = -Ab. At x = 0c. At x = +Ad. at both x = -A and x = +Ae. nowhere
If mass is oscillating on a frictionless surface at the end of a horizontal spring, then option B states that the acceleration of the mass is zero at x=0 everywhere.
What is acceleration?The rate at which an object's velocity with respect to time changes is referred to as acceleration in mechanics. They are vector quantities, accelerations. The direction of the net force acting on an object determines the direction of its acceleration. The rate at which velocity changes is called acceleration. Acceleration typically indicates a change in speed, but not always. An object that follows a circular path while maintaining a constant speed is still moving forward because the direction of its velocity is shifting. A point or object moving straight ahead is accelerated when it accelerates or decelerates. Even if the speed is constant, motion on a circle accelerates because the direction is constantly shifting.
Here,
When mass is oscillating on a frictionless surface at the end of a horizontal spring, the acceleration of the mass is zero at x=0, which is option B.
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