A grindstone spinning at the rate of 8.3 rev/s has what approximate angular speed?
a. 3.2 rad/s
b. 26 rad/s
c. 52 rad/s
d. 81 rad/s
c
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Which statement best describes the greenhouse effect? a. infrared radiation escapes into space
b. ultraviolet radiation enters a planet's atmosphere producing a green haze c. visible radiation is trapped by the atmosphere. d. infrared radiation is trapped by the atmosphere. e. oxygen escapes from the atmosphere.
The Universe contains _____________________
a. 22.7% baryonic, 4.5% WIMPs, 72.8% dark energy b. 22.7% normal, 4.5% non-Baryonic, 72.8% dark energy c. 22.7% non-Baryonic, 4.5% normal, 72.8% dark energy d. 22.7% dark energy, 4.5% baryonic, 72.8% non-baryonic
If sunlight were green instead of white, the most comfortable color to wear on a hot day would be
A) magenta. B) yellow. C) green. D) blue. E) violet.
When comparing two gases at the same temperature, the molecules of the gas with the smaller molecular weight have the higher rms speed
Indicate whether the statement is true or false