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A diffraction grating has 3560 lines/cm. Light that contains all wavelengths between 476 and 633 nm shines on the grating. Find the width of dark area between first and second order spectra on a screen 3.3 meter away.
Two nanowires are separated by 1.0 nm as measured by STM. Inside the wires the potential energy is zero, Estimate the probability that the electron passes from one wire to the other
pat builds a track for his model car out of wood. the track is 19.00 cm wide 5.00 m long and 2.78 m high and is solid.
An iron bar of mass, 0.57 kg, slides down a frictionless incline 0.67 m high. What is the speed of the combined masses after collision
A 145 g baseball is dropped from a tree 11.0 m above the ground. If it actually hits the ground with a speed of 8.00 m/s, what is the magnitude of the average force of air resistance exerted on it
An iron casting containing a number of cavities weighs 20052.8 N in air and 16121.0 N in water. What is the total volume of all the cavities in the casting
at t 0 two flat slabs each 5 cm thick one at 0 degrees and one at 20 degrees are stacked together and then the
A 32cm string being held at a tension of 64.5N has a fundamental frequency of 440Hz. What are the second and third harmonics of the string
A 5-g bullet is fired into a 1.4-kg block that is resting on a frictionless surface and is attached to a spring with spring constant 312 N/m. After impact, the block with the embedded bullet slides 8 cm across the table, compressing the spring, b..
Two balls attached to strings have the same mass and volume, but are made of different materials. Which ball exerts a greater net force on the block
A piece of concrete measures 3 ft by 3 ft by 1.25 ft. What is the net force on the concrete piece when it isunder water
A spotlight on a boat is y = 2.7 m above the water, and the light strikes the water at a point that is x = 9.4 m horizontally displaced from the spotlight (see the drawing). The depth of the water is 4.0 m. Determine the distance d, which locates the..
A nail with a diameter of 1.00 mm projects 25.0 mm horizontally outward from a wall. how much does the nail deflect downward
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