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(a) Use the Bohr model to calculate the period and frequency of an electron in the fourth Bohr orbit of the hydrogen atom.
(b) What is the range of frequency of the light emitted by the hydrogen atom?
A 75kg hiker climbs to the top of a 4100m -high mountain. The climb is made in 5.0h starting at an elevation of 3000m, Calculate the work done by the hiker against gravity
During a golf drive, the angular velocity of the driver is 20 rad/s just before impact with the golf ball. If the distance from the club head to the axis of rotation is 2.0 m
A vertical square plate (10' x 10') is used to dam a channel. determine the total resultant force on the plate and the location
A peregrine falcon dives at a pigeon. The falcon starts with zero downward velocity and dives with the free-fall acceleration. If the pigeon is 81.5 m below the initial height of the falcon, how long does it take the falcon to intercept the pigeon..
A 90 uF capacitor and a 15m H inductor are in series with a 185 O resistor, What is the resonant frequency
Find out the angular velocity at the beginning of the 4.60 interval; the angular acceleration of the flywheel.
A useful model of a water molecule is sketched in the figure below, with point charges of 5.2 10-20 C at the H sites, What is the total electric potential energy of this model of a water molecule
What are the following values about the central axis at the instant the torque has been applied for 195ms? The angular momentum of disk.
A 200g ball on a 60 {cm}-long string is swung in a vertical circle about a point 200 {cm} above the floor.
A plane touches down for a landing with a ground speed of 120 mi/h (53.7 m/s). The runway is 1000 m in length and the plane stops at the end of the runway after slowing down with constant acceleration. What is the plane's acceleration while stoppi..
Imagine that hard determinism is true. Would there be any justification for punishment? Why or why not?
What is magnetic flux through the desk surface
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