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Two 12 kg blocks are fastened to the ceiling of an elevator asin figure P 4.15. The elevator accelerates upward at 3.00 m/ssqed.
a) find the tension in the top rope.b) find the tension in the bottom rope.
What is the angular momentum of a 3.2 kg uniform cylindrical grinding wheel of radius 12cm while rotating at 1400 rpm.
A rocket moves upward, starting from rest with an acceleration of 32.0 m/s2 for 4.32 s. How high does it rise above the ground
A 50 kg woman jumps straight into the air, rising 0.8m from the ground. What impulse does she receive from the ground to attain this height
Mike is a 70 kg pole-vaulter. He falls froma peak height of 5.9 m after pole vaulting over a crossbar set at that height. He lands on a thick mat. What average force was exerted by the mat on Mike during this impact
The intensity of light from the sun is about 1000 W/m^2 on Earth. The distance between Mars, What is the intensity of light from the Sun on Mars
A particle falls to Earth starting from rest at a great height(many times Earth's radius). Neglect air resistance and show thatthe particle requires approximately 9/11 of the total time of fallto traverse the first half of the distance. [Note: You wi..
A block of mass 2.1 kg, which has an initial velocity of 5.3m/s at time t = 0, slides on a horizontal surface. Determine the distance that the block slides as it comes to rest
A transformer is to be used to provide powerfor a computer disk drive that needs 6.4 V (rms) instead of the 120V (rms) from the wall outlet. Find the number of turns in the secondary
once upon a time, a stunt man would jump across the grand canyon a motorcycle. What minimum initial speed would be required to make across the canyon
Infrared spectra are used by chemists to help identify an unknown substance. Atoms in a molecule that are bound together by a particular bond vibrate at a predictable frequency, determine the resonant frequency of this bond and the wavelength of li..
The position of the front bumper of a test car under microprocessor control is given by x(t) = 2.07 m + (4.50 m/s2)t2 - (0.100 m/s6)t6. Find its position at the first and second instants when the car has zero velocity
A 0.245 kg ball is thrown straight up from 1.94 m above the ground. Calculate the total work done by the force of gravity during that time
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