A heat engine is any device that changes mechanical work into thermal energy

Indicate whether the statement is true or false


FALSE

Physics & Space Science

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Which photo shows what we call a first-quarter moon? (Note: Assume these photos were taken in the Northern Hemisphere.)

A) 1 B) 2 C) 3 D) 4

Physics & Space Science

Which statement is correct?

A. No systems of multiple exoplanets have been detected. B. No gas giants have been detected orbiting closer than 1 au to their stars. C. No exoplanets have been detected orbiting closer than 1 au to their stars. D. No exoplanets have been detected orbiting binary stars. E. None of these choices are correct.

Physics & Space Science

Our Sun should become a planetary nebula in another five billion years

Indicate whether the statement is true or false

Physics & Space Science

The adoption of very similar streamlined body shapes by both sharks and dolphins provides evidence for

A) cross-breeding B) convergent evolution C) genetic mutations D) life originating in the oceans

Physics & Space Science