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In a high magnetic field experiment, a conducting bar carrying 13.5 kA passes through a 30 centimeter long region containing a 24.0 T magnetic field. If the bar makes a 60 degree angle with the field direction, find what force is necessary to hold it in place?
______________ kN
A drug prepared for a patient is tagged with which has a half life of 6.05 h and an activity of 1.60 µCi when it was prepared. What is its activity at the time it is injected
A playground merry-go-round of radius 2.00 m has a moment ofinertia I = 300kg·m2 and is rotating about a frictionlessvertical axle. What is the angular speed of the system when the child reaches the edge
A Styrofoam box has a surface area of 0.83 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, determine the thermal conductivity of the Styrofoam.
If a 12 V battery is used to charge this capacitor, what is the total charge stored what is the magnitude of the electric field between the plates what is the energy stored on the capacitor
a parallel-plate capacitor has an area of 4.00 cm2 and the plates are separated by 1.00 mm with air between them. the
Determine the phase and group velocities for a monatomic lattice. Plot the velocities versus the wave vector k and give a brief discussion of their significance.
At rest, a car's horn sounds the note A (440 Hz). The horn is sounded while the car is moving down the street. find Is the cyclist ahead of or behind the car
A 52.6-kg skateboarder starts out with a speed of 2.16 m/s. He does 89.2 J of work on himself by pushing with his feet against the ground. Calculate the change (PEf - PE0) in the gravitational potential energy
An engine does 17200 J of work and rejects 6470 J of heat into a cold reservoir whose temperature is 272 K
A 24-kg boy stands 5 m from the center of a frictionless playground merry-go-round, Calculate the speed of the boy relative to the surface of the merry-go-round
A one kilogram textbook drops from a one-meter high table in a room at 250C temperature. Find the change in entropy after the system has reached equilibrium
the 1994 winter olympics included the aerials competition in skiing. in this event skiers speed down a ramp that slopes
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