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A 2000 kg car moving east at 10.0 m/scollides with a 3000 kg car moving north. The cars stick togetherand move as a unit after the collision, at an angle of 36.0° north of east and at a speed of 4.94 m/s. Find the speed of the 3000 kg car before the collision.
Using the capacitance determined in part (a), calculate the current in the circuit 7.4 ms after the switch is closed. Suppose that the capacitor is uncharged initially and that the emf of the battery is 9.0 V
The magnetic field between the poles of an electromagnet is 2.17 T. A coil of wire is placed in this region so that the field is parallel to the axis of the coil. How many turns are there in the coil
An 800 g ball moves in a vertical circle on a 1.07-m-long string. If the speed at the top is 5-m/s, after that the speed at the bottom would be 8.18 m/s.
While running home from second base a 67 kg runner rounds third base at a speed of 3.1 m/s, What is the centripetal force of this turn on third base
The crankshaft in a race car goes from rest to 3600rpm in 3.2s. How many revolutions does it make while reaching 3600rpm
question1a 350 piano slides 3.4 down a 34 incline and is kept from accelerating by a man who is pushing back on it
Starting from rest, a 12-cm-diameter compact disk takes 2.5s to reach its operating angular velocity of 1500rpm. How much torque is applied to the disk
A horizontal pipe carries oil whose coefficient of viscosity is 0.800 N·s/m2. The diameter of the pipe is 57.0 cm and its length is 53 km. (a) What pressure difference is required between the ends of this pipe if the oil is to flow with an average..
Suppose that while moving into an apartment you move a refrigerator into place by sliding it across the floor. What is the least force you could exert on the refrigerator to move it
A 0.5 kg brick is dropped from a height of 9.0 m. It hits the ground and comes to rest. What is the magnitude of the impulse exerted by the ground on the brick
A solid disk of mass m1 = 9.5 kg and radius R = 0.2 m is rotating with a constant angular velocity of ? = 31.0 rad/s. A thin rectangular rod with mass m2 = 3.4 kg and length L = 2R = 0.4 m begins at rest above the disk and is dropped on the disk w..
A pressurized cylindrical tank, 5.0 in diameter, contains water which emerges from the pipe at point C, with a velocity of 12 . Point A is 10 above point B and point C is 3 above point B. The area of the pipe at point B is 9×10?2 and the pipe narr..
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