During snow fall, the surrounding air is
A) cooled.
B) warmed.
C) both of these
D) neither of these
Answer: B
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An infinite plane of charge with 
is tilted at a 45° angle to the vertical direction as shown below. The potential difference, VB?VA, in volts, between points A and B, a 4.50 m distance apart, is
?
?
A. ?7.06. B. ?9.98. C. ?14.11. D. +7.06. E. +9.98.
One mole of helium gas expands adiabatically from 2 atm pressure to 1 atm pressure. If the original temperature of the gas is 20°C, what is the final temperature of the gas? (? = 1.67)
An electron is trapped in a box of width 0.10 nm. What is the wavelength of the photon emitted when an electron makes a transition from the n = 3 to the n = 1 state?
What will be an ideal response?
A 90.0 kg person is running up the stairs at 0.500 m/s. The power needed to run up the stairs is
A. 441 Watts. B. 395 Watts. C. 302 Watts. D. 275 Watts. E. 257 Watts.