The entropy of a perfect crystal at absolute zero kelvin with the atoms at rest is equal to _____________.
Fill in the blank(s) with the appropriate word(s).
zero
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If the angular diameter of an object is 15 arc seconds and it is 1.4 billion kilometers away, how big is its physical size? Show how you arrived at your answer
What will be an ideal response?
Which force can act over distances comparable to the distance between planets?
a. only electrical c. only magnetic b. only gravitational d. All of these choices.
Jenny drives at a constant speed of 15 m/s around a circular drive of diameter 60 meters
(a) Determine her acceleration in m/s2. (b) Is her acceleration tangential, centripetal, or centrifugal? (c) Is her velocity tangential, centripetal, or centrifugal?
Lenz's Law: As shown in the figure, two solenoids are side by side. The switch S is initially open. When S is suddenly closed, the direction of the induced current through the resistor R is
A. from a to b. B. from b to a. C. No current is induced.