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Two scales on a voltmeter, which is constructed from a galvanometer, measure voltages up to 20 V and 30 V respectively. The resistance connected in series with the galvanometer is 1679 for the 20 scale and 2937 for the 30 scale.
Determine the internal resistance of the galvanometer.
In the process of making lead shot, molten lead is drippedinto water. The lead forms small drops that harden to formthe shot. what is the final temperature
Using a 673-nm wavelength laser, you form the diffraction pattern of a 0.109-mm wide slit on a screen. How far is the screen located from the slit
From what height did the student fall? Assume that the only force acting on him throughout the collision is that as a result of the ground.
batted straight back to Lonnie with a return speed of 60 m/s. If the bat is in contact with the ball for .050 s, illustrate what is the impulse experienced by the ball.
A 0.550 {\rm kg} glider on an air track is attached to the end of an ideal spring with force constant 458 {\rm N}/{\rm m}; Compute the total mechanical energy of the glider at any point in its motion
Illustrate what happens if the party against whom enforcement of an oral contract is sought admits in court that a contract was made?
A wave has the following properties: amplitude = 0.37 m, period = 68 s, wave speed = 13 m/s. What is the mathematical expression (similar to one of the following equations) for the wave
the pressure p in kilopascals volume v in liters and temperature in kelvins of a mole of an ideal gas are related by
When a 29.0-V emf device is placed across two resistors in series, a current of 10.0 A is flowing in each of the resistors. compute the magnitude of the larger of the two resistances
A toy car of mass 1.0 kg is stationary, and a child rolls a toy truck of mass 4.7 kg straight toward it with a speed of 3.2 m/s. What is the velocity of the center of mass of the system consisting of the two toys
A camera takes a perfectly exposed picture when the lens diaphragm is set to f/4 and the shutter speed is 1/250 s, what should the new shutter speed be so that the exposure is still correct
A box slides across a frictionless floor with an initial speed v = 3.4 m/s. It encounters a rough region where the coefficient of friction is µk = 0.5. with what speed does the box leave the strip
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