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Assume the following waves are propagating in air. Calculate the wavelength for gamma rays of frequency f_1= 7.40×1021 Hz.
A charged particle moves through a velocity selector at a constant speed in a straight line, Calculate the charge-to-mass ratio of the particle.
A crate of mass 14.0 kg is pulled up a rough incline with an initial speed of 1.50 m/s. How much work is done by gravity
The tractor beam exerts a constant force of 4.0 104 N on the shuttlecraft. Both spacecraft are initially at rest. Explain how far does the starship move as it pulls the shuttlecraft aboard?
If you put a 0.28 kg mass 15 cm from the axis of a massless disk, and you apply a 0.4 N force on a string wrapped at the disk's edge, what is the resulting angular acceleration
An astronomical telescope uses an objective power +2.00 D. If the length of the telescope is 52 cm, what is the focal length of the eyepiece
An 840 kg car needs to round a level curve with a radius of 23m.The driver wants to proceed at 56 kph. How much work does the friction force do on the car
A hotel elevator ascends 240 m with a maximum speed of 5.8 m/s. Its acceleration and deceleration both have a magnitude of 1.0 m/s2.
An eagle with 1.8m wingspan flaps its wings 21 times per minute, each stroke extending from 42%u2218above the horizontal to 42%u2218 below. What's the average tangential velocity of the wingtip
A particle with a charge of 31?C moves with a speed of 72m/s in the positive x direction. The magnetic field in this region of space has a component of 0.38T in the positive y direction, what is the magnitude of the magnetic force on the particle
A 72.3 kg man carrying a 5.23 kg box gets on an elevator. As the elevator accelerates upwards at 0.224 m/s^2, he feels the box is heavier, During this time, what is the weight on the floor from his feet
The middle C string on a piano is under a tension of 900 N. The period and wavelength of a wave on this string are 3.82 ms, Find the linear density of the string
The super ball is not replaced by a clay ball the same size and mass. The ball is dropped from the same height and it sticks to the table. Calcluate the impulse exerted on the clay ball
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