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A hot, 35-gram aluminum rivet is dunked into a tank containing 2.2 L of water to cool it. The change in temperature of the water is 6.5°C. Calculate the original temperature of the rivet?
A woman with mass 50.5kg is standing on the rim of a large disk that is rotating at 0.505rev/s about an axis perpendicular to it through its center. Calculate the magnitude of the total angular momentum of the woman-plus-disk system
A uniform solid disk with a mass of 23.8 kg and a radius of 0.712 m is free to rotate about a frictionless axle. Forces of 92.0 and 124 N are applied to the disk. Taking the clockwise direction to be the negative direction, what is (a) net torque pro..
A student sees a newspaper ad for an apartment that has 1430 square feet (ft2) of floor space. How many square meters of area are there
You make five measurements of a particular wavelength, and you find you have some random noise. Your measurements are 244, 251, 248, 248, 246 nm. What is the mean value for your five measurements
A car with mass of 1000.0 kg accelerates from 0 m/s to 40.0 m/s in 11.0 s. Ignore air resistance. compute the average mechanical power output of the engine
A thin, circular disk of radius R = 30 cm is oriented in the yz-plane with its center as the origin. find the magnitude of the electric field due to the disk
The loaded cab of an elevator has a mass of 3x10^3 kg and moves 177m up the shaft in 23 s at constant speed. At what average rate does the force from cable do work on the cab.
Use the force or spring constant from part (a), compute the potential energy stored in the spring when the spring is displaced 2.40 cm
A proton accelerates from rest in a uniform electric field of 680 N/C. At some later time, its speed is 1.42 106 m/s. How long does it take the proton to reach this speed
Jane plans to fly from Binghampton, New York, to Springfield, Massachusetts, about 280 km due east of Binghampton, What was the wind velocity
Two plastic spheres, each carrying charge uniformly distributed throughout its interior, are initially placed in contact and then released, Find the maximum speed achieved by the sphere of mass 50.0g
An x-ray beam with wavelength 0.270nm is directed at a crystal. What is the spacing d between the planes of the crystal
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