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? (g = 1.67)
222 K
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Intensity of Sound: The sound intensity level 5.0 m from a point source is 95 dB. At what distance will it be 75 dB?
A. 25 m B. 50 m C. 75 m D. 225 m
A beam of x-rays at a certain wavelength are scattered from a free electron at rest and the scattered beam is observed at 45.0° to the incident beam. What is the change in the wavelength of the X-rays?
(mel = 9.11 × 10-31 kg, h = 6.626 × 10-34 J ? s, c = 3.00 × 108 m/s) A) 0.175 pm B) 0.276 pm C) 0.000 pm D) 0.356 pm E) 0.710 pm
A car can move at constant speed on a level curve on a highway as long as the force of ________ between the pavement and tires is sufficient to provide the necessary centripetal force.
Fill in the blank(s) with the appropriate word(s).
When the frequency of the source of a water wave increases, the distance between successive peaks in the wave increases
a. True b. False Indicate whether the statement is true or false