The first steps of evolution off the main sequence are the same for both medium-mass and high-mass stars

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


True

Physics & Space Science

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The splitting of a large nucleus into two smaller nuclei upon absorbing a neutron is nuclear fusion

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

Physics & Space Science

The analysis of Martian meteorites found on the Earth show that they contain

A) only tantalizing hints of possible life. B) fossilized remains of multi-cellular insects. C) fossilized remains of small, mammal-like creatures. D) bacteria with DNA very different from bacteria on Earth. E) bacteria with DNA closely related to bacteria on Earth.

Physics & Space Science

The Sun reaches its most southern point at the _____

A) vernal equinox B) winter solstice C) summer solstice D) autumnal equinox

Physics & Space Science

When a steady voltage is across one-half as much resistance, the current

A) is half. B) remains the same. C) is doubled. D) is quadrupled.

Physics & Space Science