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Electronics and inhabitants of the International Space Station generate a significant amount of thermal energy that the station must get rid of. The only way that the station can exhaust thermal energy is by radiation, which it does by using thin, 1.8-m-by-3.6-m panels that have a working temperature of about 6C. How much power is radiated from each panel? Assume that the panels are in the shade so that the absorbed radiation will be negligible. Assume that the emissivity of the panel is 1.0.
Two point charges, +3.09 µC and -6.05 µC, are separated by 1.33 m. What is the electric potential midway between them?
A car (m = 1610 kg) is parked on a road that rises 17° above the horizontal. What are the magnitudes of (a) the normal force and (b) the static frictional force that the ground exerts on the tires?
Light of wavelength 400 nm is incident normally on a film of water 1.0 µm thick. The index of refraction of water is 1.33. What is the wavelength of the light in the water
Scientists have recently shown that a sample of cocaine can be traced to its country of origin by measuring the ration of carbon-13 to nitrogen-15 (both naturally occuring, stable nuclides) in the cocaine sample.
Regarding the Earth and a cloud layer 700 m above the Earth as the "plates" of a capacitor, What is the maximum charge the cloud can hold
The magnetic force per meter on a wire is measured to be only 21% of its maximum possible value
Use 9.81 for the magnitude of the acceleration due to gravity.
One of Isaac Newton's insights was that the earth's gravity extended well beyond its surface even as far as the moon, How did he know that there was any force at all acting on the moon
A mass of 400 grams hangs from the rim of a wheel of radius 15cm. When released from rest, the mass falls 2 m in 6.5 sec. Find the moment of inertia of the wheel
Over a year's time, a person receives a biologically equivalent dose of 21 mrem (millirems) from cosmic rays, What is the person's absorbed dose in rads
A cannon, placed in the valley, fires a shell at 52 degrees with respect to the horizontal line. The initial speed of the shell is 516 m/s, Calculate the range of the shell
A narrow tube open at one end has varibale length. When a vibrating tuning fork is held near one end, What is a possible frequency of the tuning fork
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