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Consider an electron constrained to travel in a one-dimensional box of length L. Suppose that a photon of wavelength 645.0nm is emitted when an electron transitions from the n=6 state down to the ground state (n=1).
What is the length L of the one-dimensional box?
1. Estimate the rate of speed (length per time) at which the hair on your head grows. Use your own experience as a guide for your answer. First express your estimate in inches per second and then in meters per second. Use scientific notation.
A heat engine has an efficiency of 25%, and its heat input is 600 J per cycle from the high-temperature reservoir
Suppose the uranium nucleus was at rest just before the decay. If the α particle is emitted at a speed of 1.74×107 m/s, illustrate what would be the recoil speed of the thorium nucleus?
Two equal masses collide in space away from any gravitational object. Mass A is moving in a straight line at 45 m/s, Find the speeds of the two masses after the collision
At time 0 a grinding wheel has an angular velocity of 30. It has a constant angular acceleration of 35 until a circuit breaker trips at time = 2.20. From then on, wheel turns through an angle of 428 as it coasts to a stop at a constant angular dec..
An outfielder throws a baseball to his catcher in an attempt to throw out a runner at home plate. The ball bounces once before reaching the catcher.
She comes to rest 3.00 m under the surface of the water. Identify the magnitude of the average force that the water exerts on the diver. This force is nonconservative.
What is the ratio of the amplitude
A block of mass 8.4 kg is pulled along a horizontal frictionless floor by a cord, What is the magnitude of the normal force exerted on the mass by the floor
You are given a spherical mirror and wish to determine its properties. You place an object on its axis, Find the mirror\'s focal length
The leader of a bicycle race is traveling with a constant velocity of +11.2 m/s and is 10.4 m ahead of the second-place cyclist. How much time elapses before he catches the leader
Your are driving along SW 8th Street (Tamiami Trail). It takes you 8.6 minutes from 107th Avenue to 87th Avenue. What was your average velocity
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