A heat engine that converts all the heat taken in from a single temperature source to work would be in violation of what natural law? ________ (more than one word)

What will be an ideal response?


second law of thermodynamics
2nd law of thermodynamics

Physics & Space Science

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Capacitors in Combination: The network shown is assembled with uncharged capacitors X , Y, and Z, with CX = 4.0 ?F, CY = 3.0 ?F and CZ = 5.0 ?F. The switches S1 and S2 are initially open, and a potential difference Vab = 120 V is applied between points a and b. After the network is assembled, switch S1 is then closed, but switch S2 is kept open. How much energy is finally stored in capacitor X?

A. 29 mJ B. 0.48 mJ C. 0.24 mJ D. 58 mJ E. 0.96 mJ

Physics & Space Science

A 4.00 kg object is moving at 5.00 m/s WEST. It strikes a 6.00 kg that is moving WEST at 2.00 m/s. The objects have a one-dimensional elastic collision in the EAST-WEST direction. The velocity of the 6.00 kg object after the collision is

A. 1.40 m/s WEST. B. 1.40 m/s EAST. C. 4.40 m/s EAST. D. 4.40 m/s WEST. E. 3.00 m/s WEST.

Physics & Space Science

Water is good for putting out fires because it has a very high latent heat of vaporization

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

Physics & Space Science

The attractive force between protons and neutrons in the nucleus is brought about by the exchange of a virtual pi-meson (m? = 140 MeV/c2). Estimate the longest time a ? can exist in accordance with the uncertainty principle ?E??t = h/2?. (h/2? = 1.05 × 10^?34 J?s, 1 eV = 1.6 × 10^?19 C)

a. 3.3 × 10^?18 s b. 2.4 × 10^?21 s c. 4.7 × 10^?24 s d. 6.9 × 10^?27 s

Physics & Space Science