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A fish scale is a device that fishermen can use to weigh fish they caught. It works by attaching the fish to a spring, and by measuring how far the spring stretches, the scale can determine the weight of the fish. The scale is calibrated to work for a spring with a particular spring constant.
The spring in one such scale broke, and the owner replaced it with a different spring that has twice the spring constant. The fisherman did not, however, recalibrate the scale. When he hangs a fish from the scale, which of the following will it read?
Two capacitors, one 8.0 µF the other 16 µF, are connected in parallel across a 12-V battery. Find the charge stored on 16 µF capacitor
A wire of initial length L0 and radius r0 has a measured resistance of 3.5 omegacap.gif. The wire is drawn under tensile stress to a new uniform radius.
When resting, a person has a metabolic rate of about 5.84 x 105 joules per hour. The person is submerged neck-deep into a tub containing 3.61 x 103 kg of water at 28.8 °C. If the heat from the person goes only into the water, find the water temper..
Assuming that the impact is perfectly plastic, determine the velocity of the mass center G of the panel immediately after the impact.
A 63.1 kilogram skier coasts up a snow-covered hill that makes an angle of 26.4 degree with the horizontal. Obtain the magnitude of the kinetic frictional force
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Find the speed of an orbiter in a circular orbit that is just above the surface of a planet, given that the orbiter's acceleration is equal to the planet's gravitational acceleration of 2.36 m/s2
Light with a frequency of 2.55 x 1015 Hz ejects electrons from the surface of aluminum, which has a work function of 4.28 eV. What is the minimum de Broglie wavelength of the ejected electrons? nm
An asteroid has acquired a net negative charge of 119 C from being bombarded by the solar wind over the years, and is currently in equilibrium whereby it expels electrons at the same rate as it acquires them. How many more electrons does it have than..
A learner throws a set of keys vertically upward to his friend who is in a window 4.00 meter above. His friend's outstretched hand catches the keys 1.5 second later. Find with what initial velocity were the keys thrown
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