As compared to a cool star, a hotter star emits:
a) shorter wavelength, lower frequency, redder color
b) shorter wavelength, higher frequency, redder color
c) shorter wavelength, lower frequency, bluer color
d) shorter wavelength, higher frequency, bluer color
e) longer wavelength, higher frequency, bluer color
Ans: d) shorter wavelength, higher frequency, bluer color
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In a parallel circuit, the size of the current flowing through each device may be different
a. True b. False Indicate whether the statement is true or false
Determine the number of air masses through which the sun’s rays must pass to reach the earth at the equator and at the equinox.
What will be an ideal response?
A well-clothed person walks into a large auditorium that is empty. If the auditorium walls are at an average temperature of 55ºF and the average surface temperature of the person’s clothes is 85ºF, estimate the net radiation heat transfer between the person and the auditorium walls. An average person can be assumed to have a surface area of 19.4 ft^2 (1.8 m2^).
What will be an ideal response?
If your mass, the mass of Earth, and the mass of everything in the solar system were twice as much as it is now, yet everything stayed the same size, your weight on Earth would
A) be the same. B) double. C) quadruple. D) be eight times as much as now. E) none of the above