When a gas in a container is squeezed to half its volume at constant temperature, the gas pressure

A) is half.
B) doubles.
C) quadruples.
D) remains the same.


Answer: B

Physics & Space Science

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Jupiter is considered a near Earth object

Indicate whether the statement is true or false

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You see colors in a rainbow because of

a. interference. b. diffraction. c. specular reflection. d. dispersion. e. polarization.

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The structural region of Earth that has the greatest volume is the

a. crust. b. outer core. c. mantle. d. inner core.

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Bert says that a charged particle in a vacuum can travel in a helix only if a uniform electric field and a uniform magnetic field are both present and both parallel to the axis of the helix. Stuart says that only a magnetic field with a component parallel to the axis of the helix is needed. Which one, if either, is correct, and why?

a. Bert, because the charged particle's velocity can have a vertical component only if an electric field in the vertical direction is present. b. Stuart, because a component of velocity in the vertical direction is not changed by a vertical component of a magnetic field. c. Bert, because a component of velocity in the vertical direction is changed by a vertical component of a magnetic field. d. Stuart, because an electric field in the vertical direction would cause the particle to come to a complete stop. e. Neither, because particles cannot move in helical paths in the presence of magnetic and electric fields.

Physics & Space Science