Speed of a wave Trial frequency (Hz) Wavelength (m)
1 440
0.77
2 392
0.87
3 256
1.33
In a lab, resonance tubes are used to determine experimentally the speed of sound. Using the data given, evaluate the best
approximation for the speed of sound.
es )
A
3 x 108 m/s
B)
170 m/s
c)
340 m/s
D)
570 m/s
Waves

Aquantity of gas has a volume of 1.5 m3 and an absolute pressure of 95 kpa. when the gas is compressed to a volume of 0.5 m3, what is the new absolute pressure of the gas? (assume that there’s no change in temperature.)

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix. b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds. c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer. d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.