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A woman passes through a revolving door with a tangential speed of 1.6m/s if she Is 70 m from the center door, what is the door angular speed? In rad/s
A small, 300 g cart is moving at 1.60 m/s on an air track when it collides with a larger, 1.00 kg cart at rest. After the collision, the small cart recoils at 0.890 m/s.
An airplane has a mass of 28,000 kg and takes off under the influence of a constant net force of 44,000 N
We have some air in a cylinder like that in the figure. Assume that air is an ideal diatomic gas. The diameter of the cylinder is 5.4 cm. Find the amount of hear that was put into air
A tennis ball with a speed of 13.20 m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 10.36m/s.
A 30.0?F capacitor is charged to 210?C and then connected across the ends of a 4.20mH inductor, Find the maximum current in the inductor
A molecule of DNA (deoxyribonucleic acid) is 2.05 µm long. The ends of the molecule become singly ionized: Determine the effective spring constant of the molecule
The 73 kg student balances an 1100 kg elephant on a hydraulic lift. Inside the lift is filled with oil and the diameter of the piston the elephant is standing on is 2.0 m, What is the second student's mass
From the shape of total energy vs. time plot, what can you conclude about the conservation of mechanical energy in your mass and spring system.
A 69-g firecracker is at rest at the origin when it explodes into three pieces. Find the velocity of the third piece
A 0.43-kg metal sphere oscillates at the end of a vertical spring. As the spring stretches from 0.12 m to 0.23 m, What is the spring constant of the spring
A point charge q = 1.45 nC is placed in the center of a spherical cavity of an isolated spherical conductor of inner radius 4 cm and outter radius 12cm
How much work has he done? (b) Another player, wearing clothes that offer better protection against heat loss, is able to remain in the game long enough to do 2.1 × 105 J of work. What is the magnitude of the heat that he has lost?
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