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Physics, 22.06.2019 00:00
True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.
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All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction
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Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)
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Physics, 22.06.2019 13:00
Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?
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A wire with a resistance of 20 Ω is connected to a 12-V battery. What is the current flowing through...
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