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A very thin circular disk of radius R = 13.00 cm has charge Q = 20.00 mC uniformly distributed on its surface. The disk rotates with a constant angular velocity ? = 3.00 rad/s around the z axis through its center.
What is the magnetic field strength on the z axis at a distance d = 130.0 cm FROM THE CENTER?
q1. after being accelerated to a speed of 1.84times105 the particle enters a uniform magnetic field of strength 1.00
A long, straight, copper wire with a circular cross-sectionalarea of 2.1mm2 carries a current of 16 A. Theresistivity of the material is 2.0 X 10-8 O m. What is the uniform electric field in the material
It is said that Galileo discovered a basic principle of the pendulum - that the period is independent of the amplitude, How long is the lamp chain?
On an unknown planet with radius 1000km a future astronaut drops a rock from his hand 2m off the ground. The rock takes 2s to reach the ground. What speed did the cannon launch the ball
A certain non-uniform but cylindrically symmetric cylinder has mass 7 kg, radius 1.7 m, and moment of inertia about the center of mass 7.5 kg m2. It rolls without slipping down a rough 20° incline.
A typical decibel level for a buzzing mosquito is 40 dB and normal conversation is approximately 50 dB. How many buzzing mosquitoes will produce a sound intensity equal to that of normal conversation?
what is the rms speed v0 of molecules in air at 0c? air is composed mostly of n2 molecules so you may assume that it
When a rifle is fired, the person firing the rifle absorbs the recoil. Consider an Olympic biathlete firing a competition rifle. What is the magnitude of the force felt by the athlete
A ball is thrown horizontally with the speed of 15 m/s from the top of a building. It takes the ball 5 s to land on the ground. What is the speed of the ball when it hits the ground
Light is shining perpendicularly on the surface of the earth with an intensity of 680 W/m2. find the number of photons per second per square meter
An accelerating voltage of 2.65 multiply.gif 103 V is applied to an electron gun, What is the magnitude of the deflection on the screen caused by the Earth's gravitational field
It is proposed that future space stations create an artificial gravity by rotating. Suppose a space station is constructed as a 800-m -diameter cylinder that rotates about its axis. The inside surface is the deck of the space station.
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