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If the electron drops back to the ground state, will a photon be emitted? If yes, what would be the energy or wavelength of the emitted photon compared to that of the absorbed photon?
A double-slit experiment uses light of wavelength 633 nm with a slit separation of 0.1 mm and a screen placed 2.0 m away. What is the linear width of the central fringe
A tennis ball rolls off the edge of a tabletop 0.500m above the floor, Find the direction of the velocity of the ball just before it strikes the floor
When a 0.20-kg block is suspended from a vertically hanging spring, it stretches the spring from its unstrained 0.005 m. find the total mechanical energy of the system at any instant
A .060-kg tennis ball, initially moving 5.50 m/s, has a head on collision with a .090-kg ball initially moving in the same direction, determine the Speed and direction of each ball after collision
q1. a force of 20 n was used to push a box along the floor a distance of 6 m. how much work was done?q2. it
The supersonic aircraft Concorde has a length of 62.7m when sitting on the ground on a typical day when the temperature is 18.0 C. find the temperature T of the Concorde's skin in flight
A proton and electron are far away from each other, how quick would the electron be going in the orbit if we assume centripetal motion?Therefore, what is the electrnss kinetic energy
An infinite line of positive charge lies along the y axis, with charge density ? = 1.20 ?C/m. find the magnitude of the net force exerted on the dipole
A 40.0 cm long organ pipe is filled with air at 0 degrees C and is open at both ends. What is the beat frequency between the fundamental frequencies of the two organ pipes
q1. a crate of 31.9- tools rests on a horizontal floor. you exert a gradually increasing horizontal push on it and
You see lightning strike a mountaintop, and 2.98 s later you hear the accompanying thunder. How far away is the mountaintop
A guitar string of length L =1 is pulled upward at the middle so that it reaches height h. What is the subsequent motion of the string if it is suddenly released
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