A group of 1.0-?F, 2.0-?F, and 3.0-?F capacitors is connected in parallel across a 24-V potential difference (a battery). How much energy is stored in this three-capacitor combination when the capacitors are fully charged?

A) 1.7 mJ
B) 2.1 mJ
C) 4.8 mJ
D) 7.1 mJ


A

Physics & Space Science

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The specific heat of ice is 2.10 kJ/kg the heat of fusion for ice at 0is 333.7 kJ/kg, the specific heat of water 4.186 kJ/kg and the heat of vaporization of water at 100is 2,256 kJ/ kg. What is the final equilibrium temperature when 30.0 grams of ice at -15.0is mixed with 8.00 grams of steam at 100?

A. 65.6
B. 60.2
C. 56.2
D. 50.1
E. 45.2

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A violation of the second law of thermodynamics would occur if

a. a ball lying on the ground started to bounce. b. transfer of energy by heat moved energy from an object at low temperature to an object at a higher temperature. c. a refrigerator heated the air in the room in which the refrigerator is located. d. any of the above occurred. e. (a) or (b) occurred, but not (c).

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Scientists constructed a history of ocean temperatures using deep ocean cores that convincingly matched the predictions of the _______________, describing the cause of multiple ice ages on Earth

Fill in the blank(s) with correct word

Physics & Space Science

The violent explosive death of an aging massive star results in a _____

A) planetary nebula B) white dwarf C) supernova D) spiral trace

Physics & Space Science