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A horizontal spring with spring constant of 9.72 N/m is attached to a block with a mass of 1.20 kg that sits on a frictionless surface. When the block is 0.345 m from its equilibrium position, it has a speed of 0.555 m/s. When the block is 0.200 m from the equilibrium position, what is its speed?
What happens to pressure if the volume is held constant and the temperature of a gas is raised
Calculate the Fermi energy and Fermi velocity for copper with 8.5 x 10^28 conduction electrons per cubic metre
a person pulls a crate with 120 n of force against 100 n of friction a distance of 5 meters. sketch a free body
When nine people whose average mass is 88 kg sit down in a car, they find that the car drops 1.42 cm lower on its springs. What is the frequency of the car's vibration if its mass (empty) is 1700 kg
Two wires are identical, except that one is aluminum and one is copper. The aluminum wire has a resistance of 0.874 ohm. What is the resistance of the copper wire? Take the resistivity of copper to be 1.72 times 10-8 ohm m, and that of aluminum to be..
Two college students having the same mass M roll toward each other on roller blades, each moving at the same speed v. What is the combined momentum of the two skaters?
A drop of unknown liquid is placed at the point on a glass surface where internal reflection is occurring at ? = 48°. What is the refractive index of the liquid
When a 47.0-V emf device is placed across two resistors in series, a current of 4.0 A is flowing in each of the resistors. obtain the magnitude of the larger of the two resistances
A bar magnet is oriented with its magnetic dipole moment at 38.5° to the direction of a 0.0145-T magnetic field, Find the magnitude of the magnet\'s magnetic dipole moment
Light from a hydrogen discharge passes through a diffraction grating and registers on a detector 1.5 m behind the grating. find the position of the second member of the Paschen series
One gram of water changes from liquid to solid at a constantpressure of 1.00 atm and a constant temperature of 0°C. Find the change in the internal energy of the water
An electron moves in a region where the magnetic field is uniform and has a magnitude of 80 mT. What is the speed of this electron as it moves in this region
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