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Two stationary positive point charges, charge 1 of magnitude 3.65 nC and charge 2 of magnitude 2.00 nC , are separated by a distance of 40.0 cm . An electron is released from rest at the point midway between the two charges, and it moves along the line connecting the two charges.
Part A. What is the speed vfinal of the electron when it is 10.0 cm from charge 1? Express your answer in meters per second.
A 325 kg crate is lowered to the ground by a helicopter. Its fastened to the end of the vertical cable which has a tension of 3500N. Is the crate speeding up, slowing down, or descending at a constant speed? Show your work
A gas consists of 4.65 grams of oxygen and4.65 grams of nitrogen and occupies a volume of 0.50 liter at a temperature of345 K. Discover the number of gas molecules. Discover the partial pressure of the oxygen.
You spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.137 liters per second, At what speed does the water exit the nozzle
At a given time, t_0, sample A contains 750,000 radioactive nuclei. During the 1 hour before t_0, a total of 280,000 decays were observed from this sample. Calculate the half-life of the radioactive material
a 1150 kg car rolling on a horizontal surface has speed v 50 kmh when it strikes a horizontal coiled spring and is
The pulley system is used to lift a 52 kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to crate. assume the masses of the chains, pulleys, and ropes are negligible, conclude the forc..
When there is an input connected across a 12V DC source what is the voltage of the output voltage after the power is connected for a while
An initiallly stationary cart rolls down an incline with a measured acceleration of 2.7m/s^2. How far along the incline does the cart roll in 3.1s
A football quarterback is moving straight backward at a speed of 2.0 m/s when he throws a pass to a player 20.0 m straight downfield. How long does it take to get to the receiver
a 20.0-kg block slides down along a 30 degree incline from a height of 20.0ma if the block reaches the bottom of the
The fan blades on a jet engine make one thousand revolutions in a time of 50.7 ms. What is the angular frequency of the blades
this simulation can be downloaded from granthams website under ph220.simulations its file name is ball on roller cstr
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