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A 40 kg child standing on a frozen pond throws a 0.5 kg stoneto the east with a speed of 5 m/s. Negelcting friction between thechild and the ice, what is the recoil velocity of the child?
a spacecraft engine creates 55.1 mn of thrust with a propellant velocity of 4.88 kms. a find the rate dmdt at which the
A block starts from rest at the top of a 35° inclined plane and encounters a spring, of constant 6.4 kN/m, rigidly attached to the plane. find the distance the block travelled before it encountered the spring
A weather vane initially at rest has a moment of inertia of 0.103 kg · m2 about its axis of rotation, Find the angular velocity of the weather vane just after it is struck
A ball of moist clay falls 17.7 m to the ground. It is in contact with the ground for 15.0 ms before stopping. What is the average acceleration of the ball
Three boats exert forces on a mooring hook. The first pulls 420 N at 60 degrees from the East. ind the resultant direction of force of the combination of these three forces
A crate of mass 45.0 kg is being transported on the flatbed of a pickup truck. The truck accelerates forward on level ground. What is the maximum acceleration the truck can have so that the crate does not slide relative to the truck's flatbed
Which of the following best describe Lenz's Law?
Find out the magnitude of the charge on the moving particle. The baby soon learns to bounce with utmost amplitude and minimum effort by bending her knees at what frequency.
When a carpenter shuts off his circular saw, the 10.0 inch diameter blade slows from 4250 rpm to 0.00 in 1.00 s. What is the distance traveled by a point on the rim of the blade during the deceleration
A transformer is to be used to provide power for a computer disk drive that needs 5.0 V (rms) instead of the 120 V (rms) from the wall outlet. The number of turns in the primary is 415, and it delivers 500 mA (the secondary current) at an output v..
A proton is released from rest in a uniform electric field of magnitude 1.08^5 N/C. Find the speed of the proton after it has traveled
consider two spheres with two masses and two charges. at a distance of 119.0 m the ratio of the electric force to the
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