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An electron is bound in an infinite well (a box) of width 0.1nm. If the electron is initially in then n = 8 state and falls to the n = 7 state, find the wavelenght of the emitted photon.
Find out whether or not the measurement of net income for a merchandising company conceptually is the same for a service company.
The first nuclear excited state of C12 is 4.439 MeV above the ground state. What is the threshold energy for this scattering reaction
As part of a safety investigation, two 1800 cars travelling at 18 are crashed into different barriers. Find an average forces exerted on (a) car that hits a line of water barrels and takes 1.80 to stop, and (b) car that hits a concrete barrier and ta..
A hunter wishes to cross a river that is 1.4km wide and flows with a speed of 5km/h parallel to its banks.
A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 34.3m/s2, Find the maximum height ymax reached by the rocket
a 2.5 kg object slides along a frictionless horizontal table with an initial speed to the left. it strikes a coiled spring ( force constant= 500. N/m), calculate the force exerted by the bumper on the object
Two girls decide to jump off a diving board. Katherine steps off the diving board. Anna runs straight off the diving board so that her initial velocity is solely horizontal. They both leave the diving board at the same time. Which one lands in the..
An intergalactic rock star bangs his drum every 1.70s. A person on earth measures that the time between beats is 2.5s. How fast is the rock star moving relative to earth.
A toy car with a mass of 120 g moves to the right with a speed of 0.43 m/s. What is the change in speed of the car
A baseball is thrown at an angle of 27 degrees relative to the ground at a speed of 20.9m/s. The ball is caught 36.0231m from the thrower. The acceleration due to gravity is 9.81m/s square. Explain how long is it in the air ?
A solid insulating cylinder of radius A is surrounded by a hollow, concentric conducting cylinder of inner radius A and outer radius B. What is the total charge on the solid cylinder
The temperature of 3.25 mol of an ideal diatomic gas is increased by 23.5 ?C without the pressure of the gas changing. By how much does the rotational kinetic energy of the gas increase
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