At the equilibrium melting temperature of a solid, if an atom of solid changes to liquid, the change in the Gibbs free energy is equal to:

(a) The heat of fusion.
(b) Zero.
(c) A negative value.
(d) A positive value.


(b) Zero.

Physics & Space Science

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Which of the following polymer combinations is least likely to mix?

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Electrical current is

A. the same as electrical charge. B. the charge per unit time. C. the product of charge and time. D. the product of charge and potential difference.

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The cosmic microwave background radiation was released shortly after the formation of the first stars

a. True b. False Indicate whether the statement is true or false

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Constant Angular Acceleration: A pulley has an initial angular speed of 12.5 rad/s and a constant angular acceleration of 3.41 rad/s2. Through what angle does the pulley turn in 5.26 s?

A. 113 rad B. 22.6 rad C. 42.6 rad D. 19.3 rad E. 160 rad

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