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An electron is in the fifth Bohr orbit of hydrogen.
A) Calculate the speed of the electron.
B) Calculate the time required for the electron to circle the nucleus.
C) Calculate the current in amperes corresponding to the motion of the electron.
The Earth has an electric field that points toward the center of the earth and that has a magnitude of 150 N/C. How much charge is needed for it to be suspended in the air
A 5.25 kg ball of clay is thrown downward from a height of 2.79m with a speed of 4.41 m/s onto a spring with k=1530 N/m. The clay compresses the spring a certain maximum amount before momentarily stopping.
A playground Merry-Go-Round has a mass of 291 kg which can be viewed as being uniformly distributed over a disk of radius 2.4 m. What is the new rotation rate assuming the child remains at the rim
question1a piece of wire with mass per unit length 78 runs horizontally at right angles to a horizontal magnetic field.
The head of a hammer with a mass of 1.5kg is allowed to fall onto a nail from a height of 0.70m, What is the maximum amount of work it could do on the nail
A spring scale on a rotating platform indicates that the horizontal force on a 0.606 kg mass is 1.57 N, How long does it take for the platform to make one revolution
A wave pulse travels down a slinky. The mass of the slinky is m = 0.86 kg and is initially stretched to a length L = 7.8 m. What is the average speed of a piece of the slinky
Two streams of air, one at 1 bar, 27C and velocity of 30 m/s and the other at 5 bar, 227C and 50 m/s velocity, Find the velocity of the stream issuing out of the nozzle
A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 30.0 min at 90.0 km/h, 5.0 min at 90.0 km/h, Determine the average speed for the trip
An object initially at rest explodes and splits into three fragments. what is the speed of the third fragment
By how much does the potential energy of a 15.0-kg child increase. Find v0.
A gas undergoes two processes. In the first, the volume remains constant at 0.230m3, Find the total work done by the gas during both processes
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