An ideal gas is allowed to expand slowly. The system is thermally isolated. Which statement regarding the final temperature is true?
1
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What happens to the magnitude of the magnetic field inside a long solenoid if the radius is doubled?
1.It becomes four times larger. 2.It becomes twice as large. 3.It is unchanged. 4.It becomes one-half as large. 5.It becomes one-fourth as large.
During various stages of evolution, low mass stars (like the Sun) differ significantly from high mass stars. How and why are the main sequence lifetimes different?
What will be an ideal response?
Power: The phase angle of an ac circuit is 63°. What is the power factor?
A. 0.89 B. 0.55 C. 0.45 D. 0.11
If you know the impulse that has acted on a body of mass m you can calculate
A. its initial velocity. B. its final velocity. C. its final momentum. D. the change in its velocity. E. its acceleration during the impulse.