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A dog sits 1.50 m from the center of a merrygo-round with an angular speed of 1.78 rad/s.
If the magnitude of the force that maintains the dog's circular motion is 42.7 N, what is the dog's mass?
A 3.2-kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. What is the elastic potential energy of the system
A ball of mass 522 g starts at rest and slides down a frictionless track. It leaves the track horizontally, striking the ground a distance of 1 m from the end of the track after falling the vertical distance 1.25 m from the end of the track.
q1. a tank with a volume of 0.150 m contains 27.0 degrees celsius helium gas at a pressure of 100 atm. how many
Two small spheres of equal mass m are suspended from strings of length L. When the two spheres are each given an equal charge q they separate by a distance x, swinging out an angle theta from the vertical
A ball rolls across a floor with an acceleration of 0.100 m/s2 in a direction opposite to its velocity. What was the initial speed of the ball
A small glass bead has been charged to + 30{\rm nC}. What is the magnitude of the acceleration of a proton that is 3.0{\rm cm} from the center of the bead
a ball is thrown horizontally from a 20-m-high building with a speed of 5.0 m/s , Make a sketch of the balls trajectory
a freezer with a coefficient of performance of 3.88 is used to convert 1.75 kg of water to ice in one hour. how much electrical energy does the freezer use during this hour of operation
The record for the highest speed achieved in a laboratory for a uniformly rotating object was 2.01e3m/s for a 0.15m long carbon rod
Each speaker produces a tone with a frequency of 200 Hz on a day when the speed of sound is 330 m/s. The person is 1.65 m from one speaker and 4.95 m from the other. What sort of interference does the person sense.
A factory worker accidentally releases a 200 kg crate that was being held at rest at the top of a ramp that is 3.9 m long, How fast is the crate moving as it reaches the bottom of the ramp
You have two 120V AC:24V AC transformers, 16 high-voltage capacitors and 10 high-voltage diodes. What is the maximum voltage of your circuit
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