A container is filled with a mixture of helium and oxygen gases. A thermometer in the container indicates that the temperature is 22.°C. Which gas molecules have the greater average speed?
A) The oxygen molecules do because they are diatomic.
B) The helium molecules do because they are monatomic.
C) The oxygen molecules do because they are more massive.
D) It is the same for both because the temperatures are the same.
E) The helium molecules do because they are less massive.
E
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One star appears blue-white while another appears yellow-orange. If this is caused by temperature difference, then
A) the stars are the same brightness. B) the yellow-orange star is hotter. C) the blue-white star is brighter. D) the blue-white star is hotter. E) the yellow-orange star is brighter.
It is possible to have a zero acceleration, and still be moving
Indicate whether the statement is true or false
A standing wave is set up in a 200-cm string fixed at both ends. The string vibrates in 8 distinct segments when driven by a 120-Hz source. What is the wavelength?
a. 6 cm b. 13 cm c. 25 cm d. 50 cm e. 100 cm
The Wasatch Mountains in Utah are examples of ______________ mountains
Fill in the blank(s) with correct word