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Find the acceleration of an object. A 10 kg box sitting on a horizontal surface is pulled by the 5N force. A 3N friction force retards the motion. What is an acceleration of the object?
Consider the Stop-and-Wait protocol as described in the chapter. Suppose that the protocol is modified so that each time a frame is found in error at either the sender or receiver, the last transmitted frame is immediate ...
Point charges of 3uC and -2uC are placed .22m apart where can a third charge be placed so that the net force on it is zero? Give answer in terms of meters from the -2uC charge. This particular question the answer is .340 ...
An 81 kg baseball player slifes into second base. The coefficient of kinetic friction between the player and the ground is 0.49. A) what id the magnitudr of the frictional force? B) if thevplayrr comes to rest after 1.6s ...
An arrow is shot at an angle of θ=45° above the horizontal. The arrow hits a tree a horizontal distance D=220m away, at the same height above the ground as it was shot. Use g=9.8m/s2 for the magnitude of the acceleration ...
During a circus act, one performer swings upside down hanging from a trapeze holding another, also upside-down, performer by the legs. If the upward force on the lower performer is three times her weight, how much (in m) ...
A negatively charged rod is brought near a metal can that rests on a wood table. You touch the opposite side of the can momentarily with your finger. The can is then be concluded to be charged. what is its charge?
A student travels 300m towards North and then 400m towards East to reach his school. Calculate the distance of his school from his home.
A vertical container with base area measuring 12.3 cm by 13.7 cm is being filled with identical pieces of candy, each with a volume of 50.0 mm^3 and a mass of 0.0200 g. Assume that the volume of the empty spaces between ...
An emf source of 12.0V is connected to a purely resistive lamp and a current of 4.0 amperes flows. All the wires are resistance-free. Calculate the resistance of the lamp?
1. When an electron is placed in an electric field it experience an electric force whose magnitude is 1.6 times its weight, find the magnitude of the electric field. 2. If the distance between the proton and electron in ...
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