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(a) If an electron makes a transition from the n = 4 Bohr orbit to the n = 3 orbit, determine the wavelength of the photon created in the process.
nm
(b) Assuming that the atom was initially at rest, determine the recoil speed of the hydrogen atom when this photon is emitted.
m/s
A small statue has a height of 3.4 cm and is placed in front of a concave mirror. Find the focal length of the mirror
To recharge a 10 V battery, a battery charger must move 3.7 105 C of charge from the negative terminal to the positive terminal. How much work is done by the charger
A coil has an inductance of 0.05 H and a resistance of 52 O. The coil is connected to a 6.0-V battery. After a long time elapses, the current in the coil is no longer changing. What is the rate of energy dissipation in the coil
Suppose that you loft the ball with an initial speed of v = 16.2 m/s, at an angle of ? = 49.4° above the horizontal. With what minimum average speed must he move
A series RCL circuit contains a 5.44-µF capacitor and a generator whose voltage is 11.6 V. Find the value of the inductance
You are driving north on 107th Avenue at a speed of 28.7 mph. At what frequency do you year the siren
A TV remote control emits IR light. If the detector on the TV set is not to react to visible light, What is the shortest-wavelength light that can strike silicon without causing electrons to jump from the valence band to the conduction band
As a 1240-kg truck travels up a 15.4-m-high hill, the nonconservative forces of friction and the force generated by the engine do work on the truck. determine the change in the truck's kinetic energy
The slit spacing is 0.20nm and the wavelength of the light is 600nm. What is the distance from the slits to the screen
A teenager pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 15 in 10.6. What force is required at the edge
A white billiard ball with mass mw = 1.43 kg is moving directly to the right with a speed of v = 3.42 m/s and collides elastically with a black billiard ball with the same mass mb = 1.43 kg that is initially at rest.
An ideal heat-engine is to be used in an environment where the ambient temperature is 22.5 °C. What should be the minimum temperature of the hot heat reservoir
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