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A hot-air balloon is rising upward with a constant speed of 3.87m/s. When the balloon is 9.27 m above the ground, the balloonistaccidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground?
A diver makes 2.0 revolutions on the way from a 9.8-m-high platform to the water. Assuming zero initial vertical velocity, find the diver's average angular velocity during a dive
A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates, Determine the work done by the net external force acting on the skier
For the infinite square well problem an electron spends 40% of its time in the n=3 state and 60% of its time in the n=5 state. Write down an expression for its wave function in terms of the eigenfunctions [(2/L)^1/2]*sin(n*pie*x/L) . What is the aver..
A 170g mass attached to a horizontal spring oscillates at a frequency of 3.70Hz. Determine the maximum speed, the maximum acceleration, total energy, and position at t=3.40s.
An x-ray photon with wavelength 5.0 pm collides with a free electron initially at rest. find the maximum possible kinetic energy acquired by the electron
A wheel 32.1 cm in diameter accelerates uniformly from 227 rpm to 363 rpm in 5.11 s. How far will a point on the edge of the wheel have traveled in this time
The electric field just above the surface of the charged hollow drum of a photocopying machine has a magnitude E of3.0E+5 N/C. What is the surface charge density on thedrum if it is a conductor?
On a summer day, the air conditioning breaks down and the air inyour classroom becomes very warm and muggy with a vapor pressure of20 hPa and a temperature of 25 degree Celsius. what is the virtul temperature of the air?
A vertical cylinder 6 ft tall and 1 ft in diameter might be used to approximate a man for heat-transfer purposes, Calculate the heat lost from the cylinder
Find out the total work done on the car by the external forces.
The hare waits for a while after the tortoise passes and then runs toward the finish line again at 7.45 m/s. Both the hare and the tortoise cross the finish line at the exact same instant.
Suppose a neutrino is created and has an energy of 49.0 MeV. (a) Assuming the neutrino, like the photon, has no mass and travels at the speed of light, find the momentum of the neutrino. (b) Determine the de Broglie wavelength of the neutrino.
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