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An electron moving with a speed of 9.5 105 m/s in the positive z direction experiences zero magnetic force. When it moves in the positive x direction it experiences a force of 2.0 10-13 N that points in the negative y direction. What is the magnitude and direction of the magnetic field?
At a factory, a noon whistle is sounding with a frequency of 497 Hz. As a car traveling at 84km/h approaches the factory, driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the change i..
An 8cm^3 ice cube is floating in a 10x10x10 cm glass container completely filled with water, How much water is going to spill over when the ice melts
In a nuclear experiment a proton with kinetic energy 1.5 MeV moves in a circular path in a uniform magnetic field. What energy (in MeV) must (a) an alpha particle (q = +2e, m = 4.0 u) and (b) a deuteron (q = +e, m = 2.0 u) have if they are to circ..
a 15 kg hoop of radius 1 m is spinning at a rate of 4 rotations per second, What is the speed in rotations per minute
Two capacitors, C1 = 30 µF and C2 = 2.0 µF, are connected in parallel and charged with a 110 V power supply. Calculate the total energy stored in two capacitors
In April 2010, the worst oil spill until that time occurred when an explosion and fire on the Deepwater Horizon left 11 workers dead and began releasing oil into the Gulf of Mexico.
A coil of wire is connected to an ideal7.00V battery att= 0. Att=10.0ms, the current in the coil is204mA. Find the resistance and inductance of the coil
A thin, horizontal copper rod is 1.10 m long and has a mass of 203 g. What is the minimum current in the rod
A 5 gram bullet traveling in 20 0C air at 300 m/sstrikes a flat steel plate and stops. What is the final temperature of the lead bullet
A massless spring with spring constant k is vertically mounted so that the bottom end is firmly attached to the ground, and the top end is free. A ball with mass m falls vertically down on the top end of the spring, becoming attached, so that the ..
A rectangular loop of wire with sides 0.20 and 0.35 m lies in a plane perpendicular to a constant magnetic field. Assuming the loop is complete, in which direction will any induced current flow
A cooling fan is turned off when it is running at 175rpm. What was the fan's angular acceleration, assumed constant
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