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Erika is on an elevator and presses the button to go down.
When the elevator first begins moving, it has an acceleration of 2.5 m/s2 downward.
Erika and the elevator have a combined mass of 1250 kg.
a) Draw a free-body diagram for the elevator.
b) What is the tension in the cable that provides the upward force on the elevator car?
The temperature of a gas is held constant whereas its volume is reduced. The pressure the gas exerts on the walls of its container enhances because its molecules: a) stri
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If a traveling wave is a sin or cos function of (x± vt) the wave than it is said to be harmonic or plane progressive wave.
define
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