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Question: A large electroscope is made with "leaves" that are78-cm-long wires with tiny 31g spheres at the ends. When charged, nearly all the charge resides on the spheres.
Part A: If the wires each make a 26o angle with the vertical , what total charge Q must have been applied to the electroscope? Ignore the mass of the wires.
Please explain your answer. I know substitution is involved so be sure to give a detailed explanation on that as well.
A rocket of total mass 3180 kg is traveling in outer spacewith a velocity of 115 m/s toward the Sun. how much mass must be expelled
What are the quantum mechanisms behind the emission and absorption of thermal radiation at and below room temperature? If the relevant quantum state transitions are molecular (stretching, flexing and spin changes) how come the thermal spectrum is con..
Two bars of identical mass are at 34 °C. One is made from glass and the other from another substance. What is the specific heat capacity of the other substance
Suppose the loop in the generator in the figure below is square and the length of each side of the loop is increased by a factor of nine. By what factor will the AC voltage change
the magnitude of the net electric field. A lead ball is dropped into a lake from a diving board 6.40 above the water. After entering the water, it sinks to the bottom with a constant velocity equal to the velocity with which it hit the water.
The electric field just above the surface of the charged drum of a photocopying machine has a magnitude E of 2.7 x 105 N/C. What is the total charge in coulombs on the drum
A pitcher pitches a baseball of mass 0.20 kilogram. The baseball arrives at home plate with a speed of 40 m/s and is batted directly back to the pitcher with a return speed of 50 m/s. Obtain the magnitude of the change of momentum of the ball
A crate is resting on a ramp that is inclined at an angleabove the horizontal, The coefficient of kinetic frictionbetween the crate and the ramps surface is 0.600. Find the acceleration of the moving crate
Westerly winds coming off the Pacific Ocean rise over the Rocky Mountains, what is the surface temperature and relative humidity on the leeward side of the mountains
A 70-kg log falls from a height of 25 m into a lake. If thelog, the lake, and the air are all at 300K, find the change inentropy of the Universe for this process
a magnetic field has a magnitude of 1.20 x 10-3 t and an electric field has a magnitude of 5.20 103 nc. both fields
The E string of a violin has a lenght of 0.33 m and a fundamental frequencynof 659 Hz. The tension of the string is 55N, What is the wave velocity of the string
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