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In a dentist's office an X-ray of a tooth is taken using X-rays that have a frequency of 7.60 × 1018 Hz. What is the wavelength in vacuum of these X-rays?
The telescope at Yerkes Observatory in Wisconsin has an objective whose focal length is 19.4 m. Its eyepiece has a focal length of 10.0 cm. What is the angular magnification of the telescope
A 11.9-g mass is suspended 1.47 cm above a nonconducting flat plate, directly above an embedded charge of q. by how much will the mass be changed
Force F = (1.0 N) + (-1.0 N) acts on a pebble with position vector r = (2.70 m) + (-2.1 m) , relative to the origin. What is the resulting torque acting on the pebble about the origin
You've signed up for a trip to Mars. After being cooped up in the tight space capsule for months, you are very excited to finally arrive and take a standing leap straight upward. How high will you jump
A father pulls his young daughter on a sled with a constant velocity on a level surface a distance of 10 m. how much work does the father do
A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 17.0 m/s. With what speed and angle of impact does the stone land
Tarzan swings on a 34.0-m-long vine initially inclined at an angle of 31.0° with the vertical, What is his speed at the bottom of the swing if he starts from rest
A balsa-wood raft has the following dimensions: L=2.34m , W= 1.35m , H= 0.65m. if the mass of an average person is 72.5kg, how many people can the raft safely support
In a double-slit interference experiment, the wavelength is 477 nm, What is the linear distance between adjacent maxima on the screen
Two protons are moving directly toward one another, When they are very far apart, their initial speeds are 2.77 106 m/s. What is the distance of closest approach
If the piston has a cross sectional area of 0.0100 m^2 and negligible mass, how high would it rise when the temperature is raised to 250°C.
A rifle with a weight of 35 N fires a 5.0-g bullet with a speed of 250 m/s, If a 675-N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle
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