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Q. A basketball of mass 610 g and circumference 76 cm is rolling without slipping on a gym floor. Treating the ball as a hollow sphere, what fraction of its total kinetic energy is associated with its rotational motion?
Q. A 64-kg skier is going down a slope oriented 33° above the horizontal. The area of each ski in contact with the snow is 0.13 m2. Determine the pressure that each ski exerts on the snow.
An air molecule is moving at a speed of 455 m/s. How many meters would the molecule move throughout 7ms (milliseconds) if it didn't collide with any other molecules.
A hotel elevator ascends 110 {rm m} with a maximum speed of 4 {rm m/s}. Its acceleration and deceleration both have a magnitude of 1.20 {rm m/s^2}.
You then maintain a constant speed of 65.0 mph. You pass the patrol car 16 seconds after you at first applied the brakes and are relieved that he doesn't pull out after you. How far away was the highway patrol car when you first saw it.
A spring of constant 3.00 x 10^4 N/m is between a rigid beam and the output piston of a hydraulic lever. An empty container with negligible mass sits on the input piston. The input piston has Areai and output piston has area 18 A.
A cosmic-ray proton in interstellar space has an energy of 17.0 MeV and executes a circular orbit having a radius equal to that of Jupiter's orbit around the Sun (7.78 x 10^11 m). What is the magnetic field in that region of space.
While a roofer is working on a roof that slants at 44.0 above the horizontal, he accidentally nudges his 93.0 toolbox, causing it to start sliding downward, starting from rest.
What are magnitude and direction of the force
What is speed of the car just before it lands safely
What is the angular acceleration
A 78-kg base runner begins his slide into second base when he is moving at a speed of 4.2 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches base.
A convex Lens of focal length 18 cm is used as the magnifying glass. At what distance from a tiny insect should you hold this lens to get a magnification of +3.00.
If the velocity of the car is increased to 50 km/ hour, what is its kinetic energy. if the velocity is improved to 75 km/ hour, what is its kinetic energy.
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