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A block m = 0.5 kg with an initial temperature of 22 Co slides along with an initial velocity (vi) when it encounters a rough surface, the block stops after traveling some distance due to the rough surface. When the block comes to rest its temperature has increased to 24 Co. Assume that the specific heat capacity of the block is c = 140 J/kgCo and all the energy goes into heating the block, what is the initial velocity of the block?
An aluninum wire has a length of 8 m and a cross-sectional radius of 0.004 m. Calculate the weight of a hanging object
The outside mirror on the passenger side of a car is convex and has a focal length of -7.7 m. Find the image distance of the truck
Suppose the charge of one is increased by twenty seven times while the charge of the other is reduced to one-third its initial value. What would their separation distance have to be changed to in order to keep the force between them the same?
Diffraction plays an important role in which of the following phenomena.
An inductor is connected to a 15kHz oscillator that produces an rms voltage of 7.0V. What is the value of the inductance L
A compound lens system consists of two converging lenses, one at x = -20.0 cm with focal length f_1= 10.0 cm, and the other at x= 20.0cm with focal length f_2 = 8.0 cm. What is the focal length of the new lens at the origin
You are using a grating with 1000 lines per millimeter; the angle for the first order maxima is ? = 17°. Find the angle of the second order maxima
A 7.80-g bullet moving at 500 m/s penetrates a tree trunk to a depth of 6.00 cm. find the average frictional force that stops the bullet
A juggler throws a ball straight up with some initial velocity. Half a second later, the juggler throws another ball straight up from the same height, then what is the initial velocity of each ball
A car owner forgets to turn off the headlights of his car while it is parked in his garage. how long will it take the battery to completely discharge
flash decides to make a capacitor at homes. Flash takes two thin, flat, rectangular aluminum plates measuring 35 cmby 50 cm. find the capacitance of flash's creation
A 1.80 kg block slides on a frictionless horizontal surface. The block hits a spring with a speed of 2.00 m/s and compresses it a distance of 11.0 cm before coming to rest. Illustrate what is the force constant of the spring?
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