Regions of a longitudinal wave where the particles of the medium are squeezed together are called compressions
a. True
b. False
Indicate whether the statement is true or false
True
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Heat is added to an ideal gas and the gas expands. In such a process the temperature
A. will remain the same if the work done equals the heat added. B. must always decrease. C. will remain the same if the work done is less than the heat added. D. must always increase. E. will remain the same if the work done exceeds the heat added.
Which of the following gases is not a significant ingredient of the jovian planet atmospheres?
A) carbon dioxide B) water C) hydrogen D) helium
When projected through a single lens, the image of a movie on a screen is
A. real and inverted. B. virtual and inverted. C. real and upright. D. virtual and upright. E. virtual and enlarged.
The electric field established by a generator in an ac circuit
A) increases via the inverse-square law. B) changes magnitude and direction with time. C) acts in one direction. D) is non-existent. E) none of the above