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1. A hydrogen atom initially in its ground state absorbs a photon and ends up in the n=6 state. Calculate the energy of the incident photon.
2. If the above atom in the n=6 state eventually returns to the ground state (n=1), calculate the energy of the emitted photon.
the magnetic field amplitude of an electromagnetic wave is 8.5E-7 T. Calculate the ampitude of the electric field if the wave is travelling in Air
Two 1.5cm -diameter disks face each other, 2.0mm apar, What launch speed must the proton have to just barely reach the positive disk
A diverging lens has a focal length of 71.5 cm. A real object is placed 30.9 cm in front of the lens. How far is the image located from the lens
Find out the magnitude of the vertical component of the velocity
A 1.57-? resistor is connected across a 6.90-V battery. The voltage between the terminals of the battery is observed to be only 6.30 V
Two vehicles are approaching an intersection. One is a 2300kg pickup traveling at 14.0m/s from east to west (the ?x- direction), What is the magnitude of the net momentum
The longest "string" (a thick metal wire) on a particular piano is 3.0 m long and has a tension of 300.0 N. It vibrates with a fundamental frequency of 27.5 Hz. What is the total mass of the wire.
An astronaut on the Mars attaches a small brass ball to a 1.00- length of string and makes a simple pendulum. She times 13 complete swings in a time of 35.4 seconds. From this measurement she calculates the acceleration due to gravity on the Mars.
Illustrate what is the maximum vertical displacement that he ball reaches during its trajectory?
A positive charge Q1 = 3.00 µC is in the origin and a negative charge Q2 = -5.00 µC is at point x = 11m. Find the position of point P between the charges, where the electric potential equals zero.
Positive electric charge is distributed in the shape of an infinitely long insulating cylinder of radius R and volumetric charge density ?=?0(1-r/R), Find an expression for the linear charge density
What is the cannonball's velocity at the highest point in the trajectory, How long does it take to get to this point
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