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Without moving, you will suddenly see the penny magically appear. If you look into the cup at an angle of 70.0 Degrees to the normal, at what angle to the normal must the penny be located in order for it to just appear in the bottom of the cup when the cup is filled with water? (N^water= 1.33)
The earth has a net electric charge that causes a field at points near its surface equal to 150N/C and directed in toward the center of the earth. a) What magnitude and sign of charge would a 60 kg human have to acquire to overcome his or her weig..
q1. a 0.0150-m wire oriented parallel between the poles of an electromagnet carries a direct current of 9.5 a. the
An alpha particle (q = 2e and m = 6.64e-27 kg) is accelerated from rest through a potential difference of 1.2e+5 volts. Find the speed of the particle after being accelerated
A standing observer perceives a train whistle to have a frequency of 300 Hz. what is the frequency of the sound waves emitted from the train
A rectangular corral of widths Lx = L and Ly = 2.16L contains seven electrons. What multiple of h2/8mL2 gives the energy of the ground state of this system? Assume that the electrons do not interact with one another, and do not neglect spin.
a particle with a charge of 4c and a mass of 12kg is travelling in a circular path around a fixed particle of charge
A cooking vessel on a slow burner contains 11.2 kg of water and an unknown mass of ice in equilibrium at 0°C at time t = 0. determine the initial mass of ice
Two polarizers are oriented at 54? to one another. Unpolarized light falls on them. What fraction of the light is intensity is transmitted
a child does 350 J of work while pulling a box from the ground up to his tree house with a rope the tree house is 8.4 m above the ground
A small ball with a mass of 0.06 kg moves along a circular orbit with a radius of 0.5 m at a speed of 3.0 m/s. What is the angular momentum of the ball
A 1.3 m length of wire carrying 5.9 A of current toward the south is oriented horizontally. Estimate the magnitude of the magnetic force on the wire due to the Earth's magnetic field of 5.5 ? 10-5 T at this point
A 5.70 kg object on a horizontalfrictionless surface is attached to a spring with spring constant1090 N/m. What is the amplitude of the motion
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