Which type of electromagnetic wave has the largest wavelength?
a. gamma rays
b. radio waves
c. x-rays
d. visible light
b
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A heat engine absorbs energy of magnitude |QH| as heat from a high temperature reservoir, does work of magnitude |W|, and transfers energy of magnitude |QL| as heat to a low temperature reservoir. Its efficiency is:
A. |QH|/|W| B. |QL|/|W| C. |QH|/|QL| D. |W|/|QH| E. |W|/|QL|
The primary source of the Sun's energy is:
A) oxidation of carbon in the core. B) gravitational collapse of the helium coreward. C) dark energy. D) the strong force fusing hydrogen into helium. E) the weak force creating energy from uranium decay.
Can metamorphism, caused solely by elevated temperature, occur without the presence of magma? Why or why not?
What will be an ideal response?
Interference effects are less visible for thick films because the reflected waves
A) from the bottom surface are too dim. B) become too dispersed. C) are out of phase with one another. D) are too displaced to interfere.