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A charge q is distributed uniformly around a thin ring of radius r. The ring is rotating about an axis through its center and perpendicular to its plane, at an angular speed w.
1. What is the direction of this magnetic moment if the charge is positive?
2. Show that the magnetic moment due to the rotating charge has magnitude u=(.5)qwr^2.
The security alarm on a parked car goes off and produces a frequency of 1020 Hz. The speed of sound is 343 m/s. At what speed are you driving
A man working out in a gym has a metabolic rate of 2500 kJ/h. His body temperature is 37°C, Find at what rate is energy eliminated by evaporation from the lungs
A certain lightbulb has a tungsten filament having a resistance of 16 ? at 22°C and 155 ? when hot. Find the temperature of the filament when it is hot
An open tank is filled with gasoline to a height of 4.5 m from the bottom. A hole of diameter 2.4cm is at the bottom of the tank. How fast is the seepage? How many cubic meters of gasoline is wasted per second?
The electron and proton of a hydrogen atom are separated (on the average) by a distance of approximately 5.3 x10-11 m. Find the magnitude of the electric force.
A board, with a mass m = 20.0 kg and a length of 4.00 m, is supported by two identical vertical connected to the ends of the board, What are the tensions in the two ropes
a capacitor is connected across the terminals of an ac generator that has a frequency of 440 HZ and supplies a voltage of 24V. Find the capacitance of the second capacitor
A catapult with a radial arm 4.19 m long accelerates a ball of mass 19.1 kg through a quarter circle. The ball leaves the apparatus at 41.6 m/s. Find the moment of inertia of the arm and ball
q1. determine the work done by 9.00 of water when it is all boiled to steam at 100. suppose a constant pressure of
A 0.45 caliber bullet (m = 10.7 g) is fired into a large block of wood (M = 0.750 kg) so that the bullet becomes lodged in the block. What is the speed of the block after the collision
An object initially at rest moves a distance x when a force F is applied for time t. How far will the object move of a force of 2F is applied for the same time t
While a person is walking, his arms swing through approximately a 45.0 degree angle in 0.530 s. Find the force that the blood vessel must exert on the blood
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