Gas pressure is caused by molecular ______________ with the walls of the container
Fill in the blank(s) with correct word
collisions
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A steel piano string is attached, under tension, at each end to secure posts. When gently struck, a faint note can be detected coming from the string. The string is then cooled by blowing cold air over it and then is struck again. How does the note now detected compare to the previous one
a. It is the same since the posts don't move. b. It is at a higher frequency than the original one. c. It is at a lower frequency than the original one. d. More than one answer is correct.
A blimp is filled with 200 m3 of helium. How much mass can the balloon lift? The density of helium is one-seventh that of air, and the density of air is 1/800 that of water. Consider the mass of the balloon to be negligible
a. 115 kg b. 214 kg c. 315 kg d. 415 kg e. 37 kg
If the Moon rose tonight at 6 PM, then tomorrow it will rise about:
A) the same time. B) 7 PM. C) 5 PM. D) dawn. E) midnight.
Find the change in entropy (in J/K) when 5.00 moles of an ideal monatomic gas are allowed to expand isobarically from an initial volume of 20 cm3 to a final volume of 100 cm3.
A. 167 B. 100 C. 67 D. 52 E. 152