The statement that "heat energy cannot be completely transformed into work" is a statement of which thermodynamic law?

A) fourth
B) zeroth
C) second
D) third
E) first


C

Physics & Space Science

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Unpolarized light is passed through a polarizer-analyzer combination. The transmission axes of the polarizer and the analyzer are at 30.0° to each other. What percentage of the unpolarized light gets through the combination?

A) 37.5% B) 50.0% C) 63.7% D) 75.0% E) 100%

Physics & Space Science

Steam that issues from a pressure cooker

A) is invisible. B) cools as it expands. C) both of these D) neither of these

Physics & Space Science

What would a civilization within 60 light-years away be able to detect from Earth?

a. our first TV transmissions b. our cellular phone transmissions c. our production of machines that create noise d. our excessive carbon emissions e. our wireless Internet transmissions

Physics & Space Science

Thermodynamic Processes: The figure shows a pV diagram for 8.3 g of ideal nitrogen gas N2 in a sealed container. The temperature of state 1 is 59°C, the atomic mass of the nitrogen atom is 14 g/mol, and R = 8.31 J/mol ? K. What are (a) pressure p1 and (b) temperature T2?

A. (a) 81 atm, (b) 660°C B. (a) 14 atm, (b) 660°C C. (a) 81 atm, (b) 120°C D. (a) 14 atm, (b) 120°C

Physics & Space Science