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A kid does 350 Joule of work while pulling a box from the ground up to his tree house at a steady speed with a light rope. The tree house is 4 meter above the ground. Compute what is the mass of the box?
A 200-kg roller coaster car travels over the top of a 40-m high hill (Hill A) traveling at 10 m/s. find the speed of the car at the top of the second hill
A 2000 kg satellite is in a circular orbit of radius 60,000 km from the center of the Earth. Determine the gravitational force on the satellite
A 200 gm block of metal is heated to 100 degrees Celcius in boiling water. This block is after placed in an aluminum calorimeter cup (mass - 30gm; c - .22 cal/g degrees C) containing 180 gm of water at 20 degrees C.
a ball of mass 2.0 kg is traveling towards you at 15 ms. you are at rest and have a mass of 70 kg.a. assuming you catch
A particle is located at r=(4.1i+3.1j+5.6k)m . A force F=(9.5j-3.5k)N acts on it. What is the torque, calculated about the origin
a particle of mass 110-5 kg has a negative charge of -10 c. it moves in a clockwise circular pattern of radius 2m at a
find a the energy absorbed as heat and b the change in entropy of a 4.60 kg block of copper whose temperature is
In a location where the speed of sound is 346 m/s, a 2000 Hz sound wave impinges on two slits 30 cm apart. At what angle is the first-order maximum located
The current in a coil drops from 3.1 A to 2.6 A in 0.53 s. If the average emf induced in the coil is 12 mV, what is the self-inductance of the coil
A body of mass 12kg is moving with a velocity of 1m/s.Calculate the force required to stop it in 10s. how far will it travel before coming to rest
1. an air puck bounces back and forth between two parallel walls always traveling perpendicular to the walls. each time
a 0.45 f parallel- plate capacitor is connected to a 6v battery. a how much is the charge on the plates? b what is the
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