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A rubber ball with a mass of 0.160 kg is dropped from rest. From what height was the ball dropped, if the magnitude of the ball's momentum is 0.770 kg·m/s just before it lands on the ground?
Coil 1 has L1 = 47 mH and N1 = 104 turns. Coil 2 has L2 = 68 mH and N2 = 215 turns. The coils are fixed in place; what self-induced emf appears in that coil
In a right angle triangle ABC, angle ABC = 90o, AB = 2 meter, and angle ACB is 41.81o. Determine the electric field at B
A proton moves at 5.00 105 m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of 9.00 103 N/C. Find the time interval required for the proton to travel 4.00 cm horizontally
The pole pieces of one magnet are 45 cm x 45 cm in cross section. Calculate the flux through an area (45 cm x 45 cm) normal to the field direction
The force of the wind on the sails of a sailboat is 300 N north. The water exerts a force of 210 N east. If the boat (including crew) has a mass of 310 kg, illustrate what are the magnitude and direction of its acceleration?
a hockey player hits a .1 kg puck initially at rest on the ice with a force of 160 n for a period of .024 s. what is
The position of a car at t= 20 min is x= 12 km. Its position is 69.6km when t=60min. Find the average velocity of the car
A 23 kg girl is standing on a 2.0 kg cart on a frictionless surface. She is at rest. She then throws a heavy 8.9 kg rock, giving it a speed of 7.5 m/s. What is the final speed of the girl/cart system?
Assume the corners of a cube of side a are occupied each by a positive charge q, What is the net force on each of the eight charges
A stick with a length of 1m is supported by a knife edge at the 50 cm mark (middle). Two masses m1: 0.4 kg and m2: 0.6 kg are hanging.. m1 20 cm from the left end, Calculate the torque created by m1
A 50.0 stunt pilot who has been diving her airplane vertically pulls out of the dive by changing her course to a circle in a vertical plane. What is the apparent weight of the pilot at the lowest point of the pullout
Determine the resistance of a 75-W lightbulb connected to its proper source voltage of 110 V. Express your answer to two significant figures and include the appropriate units.
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