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A nonconducting sphere of charge +Q and mass m is attached to a string of length L and hangs from a ceiling. When a uniform electric field directed horizontally (from left to right) is introduced, equilibrium is eventually established with the mass hanging at an angle ? with respect to the vertical. In terms of g and the given quantities, find the strength of the electric field and the tension in the string.
A child sits in a wagon with a pile of 0.403 kg rocks. If she canthrow each rock with a speed of 11.7 m/s relative to the ground, how many rocks must she throw
What voltage must be applied to the 5.00 µF capacitor of a heart defibrillator to store 550 J in it? Find the amount of stored charge
If the average molecular mass of compounds in food is 47.5, how many molecules are there in 1.00 kg of food, Find the ratio of ion pairs to molecules
The frequency doubled output of a Nd3+ YAG laser has a wavelength of 532nm. how many photons does the laser emit at 532nm in 3 minutes
Nate the Skate was an avid physics student whose main non-physics interest in life was high-speed skateboarding. In particular, Nate would often don a protective suit of Bounce-Tex, which he invented, and after working up a high speed on his skate..
A(n) 150 pF capacitor is connected in series with an unknown capacitor, and as a series combination they are connected to a 23.0 V battery, what is the unknown capacitance
A duck flying horizontally due north at 14.2 m/s passes over Atlanta, where the magnetic field of the Earth is 5.09×10-5 T in a direction 55.9° below a horizontal line running north and south. The duck has a positive charge of 3.28×10-8 C. What is th..
Plot the probability distributions for the simple harmonic oscillator's ground state wave functions. Change the parameter that governs the ''width'' of the position distribution and see what happens to the width of the momentum distribution.
A microphone is located on the line connecting two speakers that are 0.766 m apart and oscillating 180° out of phase. What is the next lowest frequency that produces an interference maximum at the microphone's location
a pottery wheel is rotating initially with an angular velocity of 4.0rad/s clockwise. find the direction of the angular acceleration of the wheel
Two negative, equally charged drops of water, 0.80 mm apart, exert an electrostatic force of 78.5 x 10-9 N on each other. Determine the net charge on each drop.
Two large parallel plates are separated by 0.90cmand carry uniform charge densities equal in magnitude and opposite in sign, Find the magnitude of the charge density on the plates
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