Consider a Carnot cycle starting at the state of highest pressure and smallest volume. Call the isothermal expansion from this state step 1, the adiabatic expansion which follows step 2, the isothermal compression that then follows step 3, and the adiabatic compression which returns the system to the initial state step 4 . In which steps does the internal energy of the system increase?
a. 1 and 2 b. 3 and 4
c. 1 and 3 d. 2 and 4
b
Physics & Space Science
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If the collision is elastic, how many equations of constraint do we have on those quantities?
A. Zero B. One C. Two D. Three E. Four
Physics & Space Science
The most important property that determines the evolution of a star is its
A. composition. B. mass. C. temperature. D. location.
Physics & Space Science
As monochromatic light passes from air to glass and back to air, changes occur in its
A) wavelength. B) speed. C) both of these D) neither of these
Physics & Space Science
A rock is thrown downward from an unknown height above the ground with an initial speed of 10 m/s. It strikes the ground 3.0 s later. Determine the initial height of the rock above the ground.
A. 44 m B. 14 m C. 74 m D. 30 m E. 60 m
Physics & Space Science