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A red laser from the physics lab is marked as producing 632.8 nanometer light. When light from this laser falls on two closely spaced slits, an interference pattern formed on a wall several meters away has bright red fringes spaced 6.00 millimeter apart near the center of the pattern. When the laser is replaced by a small laser pointer, the fringes are 6.13 millimeter apart. Find the wavelength of light produced by the pointer?
A ball of mass 100 gram travels toward a catcher of a ballistic pendulum of length 1.0 meter. The mass of the catcher is 200 gram. Determine the velocity of the ball before the collision
the atomic mass of lithium-6 is 6.015123 u. how much energy is required to completely separate the nucleons in a
A box is dropped from a spacecraft moving horizontally at 27.0 m/s at a distance of 155 m above the surface of a moon. The rate of freefall acceleration on this airless moon is 2.79 m/s2.
You exert a force as shown in the diagram to push a large crate of books (about 1 m high, m = 45.0 kg) across a rough floor at constant speed v = 0.650 m/s. Find the rate at which work is done by you
A 240g ball and a 130g ball are connected by a 32 cm-long massless, rigid rod. The structure rotates about its center of mass at 150rpm.
Three infinite nonconducting sheets, with uniform positive surface charge densities, sigma, 2sigma, and 3sigma, are arranged to be parallel. What is their order, from left to right
Two identical tiny spheres carrying the same charge are 1.0m apartcenter to center in vacuum and experience an electrical repulsionof 1N. what is their charge? and find the ratio of the electrostatic and gravitational forces between two electrons whe..
a fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. the
According to legend, to determine whether the king's crown was made of pure gold, Archimedes measured the crown's volume by find out how much water it displaced. The density of gold is 19.3g/cm^3. If the crown's mass was 6.00 * 10^2g, what volume ..
A goldfish is swimming inside a spherical bowl of water having an index of refraction n = 1.333. find the apparent distance of the goldfish from the wall according to an observer outside the bowl
A rope, under a tension of 294 N and fixed at both ends, oscillates in a second-harmonic standing wave pattern, find the length of the rope and the speed of the waves on the rope
question a golf ball strikes a hard smooth floor at an angle of ? 32.4deg and rebounds at the same angle. the mass of
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