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A skater spins with her arms extended at a speed of 11 m/s. If she then whips her arms in to her body to form a circle with a radius of 0.4 m and spins at a new speed of 24 m/s, what was the radius of the circle that she formed with her arms extended? (Assume net external torque is zero).
A football is kicked off at a speed of 24 m/s at 30 degree about the horizontal and lands on the field. What is the horizontal distance from the starting point
Two coils have the same number of circular turns and carry the same current. Each rotates in a magnetic field acting perpendicularly to its axis of rotation. What is the radius (in cm) of coil 2
Two masses traveling at the same speed v0 collide head on. Nothing is known about collision other than that it is not completely inelastic.
Two 0.80g spheres are charged equally and placed 2.0cm apart. When released, they begin to accelerate at 160m/s^2. What is the magnitude of the charge on each sphere?
One mole of an ideal diatomic gas is expanded at constant temperature from a pressure of two atmospheres, What are the final temperature and pressure of the gas
calculate the final temperature of the puddle once it settled to equilibrium. (Assume the chamber walls are sufficiently flexible to allow the system to remain isobaric and consider thermal losses/gains from the chamber walls as negligible.)
You are trying to slide a refrigerator across a horizontal floor. The mass of the refrigerator is 188kg, and you require to exert a force of 347N to make it just begin to move. What is the coefficient of static friction between floor and refrigera..
Space vehicles traveling through Earth's radiation belts can intercept a significant number of electrons, Find the resulting surface charge density
Three identical masses of 430 each are placed on the x axis. One mass is at = -14.0, one is at the origin, and one is at = 37.0.
How far from a point on the floor directly below the edge. Why is it a good idea to have your hand extended forward when you are getting ready to catch the fast moving baseball with your bare hand.
For a camera equipped with a 51-mm focal-length lens, How far is the object from the image on the film
After inverting the tube 100 times, the temperature of the lead shot is found to have increased by 30C
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