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A 6.50 x 105 kilogram subway train is brought to a stop from a speed of 0.500 meter per second in 0.400 m by a large spring bumper at the end of its track. Evaluate what is the force constant of the spring?
Two light bulbs labeled 50 W and 100 W, find the actual power consumed by the brighter bulb
A circuit contains only a(n) 0.189 H inductor. An AC voltage of peak value 177 V and frequency 58.5 Hz is applied to the circuit. When instantaneous voltage is 177 V, what is the instantaneous AC current?
a plastic ball with internal diameter of 1.00 m is filled with air. the ball is attached to a uniform steel cable that
A 1.11 kg mass is at the center of a uniform spherical shell of mass 1.09 1020 kg and radius 1.07 106 m. Find the resultant gravitational force on the mass
an electron is released from rest at a distance of 0.500m from a large insulating sheet of charge that has uniform
0.25 kg coffee mug is made from a material that has a specific heat capacity of 990 J/(kg°C) and contains 0.31 kg of water. determine the minimum power rating of this heater
The vertical displacement of particles in a string (when a wave is propagating through it) is given by y = (0.02) sin[(10?)t - (8?)x], where everything is measured in standard units, meters and seconds. What is the amplitude of the wave?
A projectile is fired up into the air at a speed of 199 m/s at an angle of 17° relative to the horizontal. Determine the maximum height the projectile will reach
A refrigerator uses an ideal Carnot cycle to cool its interior. The outside air has a temperature of 304 K, What is the coefficient of performance of this refrigerator
Suppose a 31.7 kg child sits 1.38 m to the left of center on the same seesaw as the problem you just solved. A second child sits at the end on the opposite side, Find the normal force acting at the pivot point
a 1.2-m-long steel rod with a diameter of 0.50 cm hangs vertically from the ceiling. By how much does the rod stretch
a table has a mass of 500 kg. the floor is known to have a vibration amplitude of 1 igravem at a frequency of 200 hz
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