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An electron enters a region of space containing a uniform 0.0000217-T magnetic field. Its speed is 189 m/s and it enters perpendicularly to the field. As you know, the electron undergoes circular motion under these conditions. Find the radius of the electron\'s orbit, r, and the frequency of the motion, f.
Rank the voltage across each cylinder. A baseball is seen to pass upward by a window 15 m above the street with a vertical speed of 18 m/s. imagine the ball was thrown from the street. What was it's initial speed.
A cannonball is fired from a canon at an angle of 45 degrees to the horizontal.The cannonball's initial velocity is 40 m/s. How far will the cannonball go before it hits the ground
We have an RC circuit with a 1.0 mega Faraday capacitor, a 20 kilo-ohms resistor, amd a 9.0 volt battery. what is the voltage between the plates of the capacitor
Using the idea of a dozen as an example again, if you have 2 dozen blocks and their total mass is 48 kg, What is the mass of a single molecule
a greased pig is at the top of a 3m high frictionless hill moving at a speed of 5m/s. what is the pig's speed when it gets to the bottom of the hill
Use Pascal's principle. Given that Fout is 68 lb., the areas of the output and input cylinders are Aout 21 in2 and Ain 6 in2, what is the input force
Assume a 64 kg boy and a 42 kg girl use a mass less rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3 m/s2, find out the magnitude of the acceleration of the boy toward girl.
The angular momentum of Earth is constant
When one person shouts at a football game, the sound intensity level at the center of the field is 62.4 dB. When all the people shout together, how many people are at the game
Radioactive isotopes frequently occur together in mixtures. Assume a 400g sample contains, with a half-life of 12 days, and, with a half-life of 4.5 days. If there are firstly twice as many calcium atoms as there are barium atoms, what will be the ra..
A train moving at a constant speed of 59.0 km/h moves east for 50.0 min, What is the average velocity of the train during this run
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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