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In the following figure, determine the direction of the current in resistor ab:
A) As switch S is closed.
B) As coil B is moved away from coil A with the switch closed;
C) As the resistance of R is increased while the switch remains closed.
A generator is designed to produce a maximum emf of170 V while rotating with an angular speed of 3700 rpm. determine how many turns of wire are needed
a long narrow steel rod of length 2.5000 m at 25 c is oscillating as a pendulum about a horizontal axis through one
Honeybees acquire a positive charge while flying through the air. The rapid motion of the wings through the air provides the "friction" to strip charges off the bee, find the strength of the electrostatic force on the pollen grain
The universal-NOT gate in quantum computing is an operation which maps every point on the Bloch sphere to its antipodal point (see Buzek et al, Phys. Rev. A 60, R2626-R2629). In general, a single qubit quantum state, |??=α|0?+β|1? will be mapped t..
A small button placed on a horizontal rotating platform withdiameter 0.320m will revolve with the platform, How far from the axis can the button be placed, without slipping, ifthe platform rotates at 60.0 rev/min
An electron and a positron (an antielectron) make a head-on collision, each moving at v=0.99999c. What is the kinetic energy of each of the muons
Trucks with the noted masses moving at the noted speeds crash into barriers that bring them to rest with a constant force
Two small charges with a mass of 1.0 g each are connected by a 2.0 cm long insulating rod of negligible mass. Calculate the magnitude of the torque exerted on the rod by the electric field
A 45.0 kg person, standing 1.3 m from the axis, begins to run on the disk in a circular path and has a tangential speed of 2.80 m/s relative to the ground. Find out the resulting angular speed of the disk (in rad/s)
A copper block is removed from a 310 degrees Celsius oven and dropped into 1.20kg of water at 20.5 degrees Celsius. The water quickly reaches 25.5 degrees Celsius and then remains at that temperature.
A uniformly charged ring of radius 10.0 cm has a total charge of 63.0 µC. Find the electric field on the axis of the ring at the following distances from the center of the ring
a calculate the electrons de brogile wavelength when its kinetic energy is 25ev.b if you require the wavelength of
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