Henrietta Leavitt first showed the relationship between the mass and luminosity of Cepheids and their period of pulsation; the brighter, the longer this period

Indicate whether the statement is true or false


TRUE

Physics & Space Science

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What can we infer, at least roughly, from a star's luminosity class?

A) its size (radius) B) its mass C) its age in years D) its surface temperature

Physics & Space Science

The most efficient form of locomotion in the animal kingdom is

A) a human walking. B) a human on a bicycle. C) a propeller-driven airplane. D) a bird flying. E) railroad trains.

Physics & Space Science

Jupiter and the Sun have almost the same composition and density; why isn't Jupiter also a star?

What will be an ideal response?

Physics & Space Science

If you jump straight up while inside a fast-moving train that gains speed, you land

A) slightly ahead of your original position. B) at your original position. C) slightly behind your original position.

Physics & Space Science