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The minimum-wavelength X-ray produced by a certain X-ray tube is 0.283 nm. Find the minimum voltage applied to the tube
Young's double-slit experiment is performed with 587-nm light and a distance of 2.00 m between the slits, Determine the spacing of the slits
You are running toward an approaching marching band. You are moving at 9.3 m/s and the band is moving at 2.7 m/s
Initially an unpolarized light with intensity I is sent through a polarizer with its axis set to zero degrees. what is the angle of the second polarizer
In an X-ray scattering measurement the first order diffraction peak is observed at ? = 16.5°. What is the angle of the third order peak
Assume a distant star functions as a blackbody at a temperature of 12,000 K and produces light at a rate of 7.72 x 1030 W. What is the radius of the star
An x-ray photon of initial energy 50.0 keV Compton scatters from an electron that is initially at rest. find the wavelength of the back-scattered photon
A film of oil lies on wet pavement. The refractive index of the oil exceeds that of the water. what is the longest visible wavelength (in vacuum) for which the film will appear bright due to construct
A perfectly reflecting flat mirror is uniformly illuminated by light striking it perpendicularly. Calculate the intensity of the light
When light from your desk lamp passes through a 45-mm focal length lens, How far is the desk lamp from the lens
Bowling balls can be made from a variety of substances and are required to have a circumference of roughly 27.8 inches. compute the thickness of the shell
A wheelchair athlete is training on a stationary ergometer. Her wheel's angular velocity is 3 rev/s and diameter is 80.0 cm. What is the linear velocity at the wheel's circumference
A cyclist hits the brakes and decelerates. His wheels were spinning at 175 rev/min initially and 40 rev/min after 5 s of deceleration. Compute the average angular acceleration (in rad/s2) of his whee
A nickel crystal is used as a diffraction grating for x-rays. Then the same crystal is used to diffract electrons. what is the kinetic energy of each electron
A hot-air balloon is accelerating upward under the influence of two forces, its weight and the buoyant force. What is the acceleration of the rising balloon
A textbook of mass 1.91 kg rests on a frictionless, horizontal surface. compute the tension in the part of the cord attached to the book
A 64-kg skier is going down a slope oriented 36° above the horizontal. Determine the pressure that each ski exerts on the snow
Neutron stars consist only of neutrons and have unbelievably high densities. Find the density of such a star
A ladder 5.6 m long leans against a wall inside a spaceship. From the point of view of a person on the ship, Find the angle the ladder makes with the floor
During a ballet performance a ballerina leaps into the air. If the dancer leaped at 90 degrees, what was the dancers initial speed
In order to calculate the number of ways of arranging a given amount of energy in a tiny block of copper, How many atoms are in the copper block
A ski jumper starts from rest 50.0 m above the ground on a frictionless track and flies off the track at an angle of 45.0° above the horizontal, What is her speed when she leaves the track
Two different simple harmonic oscillators have the same natural frequency (f=7.10 Hz) when they are on the surface of the Earth. Calculate the new frequency of the pendulum
Two parallel wires lie in the plane of the paper with equal magnitude 5.0 A currents in the opposite direction. find the magnitude and direction of the magnetic field
A world champion hammer thrower, rotates at a rate of 3.5 revolutions/sec just prior to releasing the hammer. What was the linear velocity of the hammer at release