At decoupling, the electrons and protons were made from neutron decay

Indicate whether the statement is true or false


FALSE

Physics & Space Science

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With current technology, the Doppler method can be used to measure stellar motions that are as small as about

A) walking speed. B) the speed at which continents move with plate tectonics. C) the speed of cars on a freeway (with no traffic). D) the cruising speed of an airplane. E) the orbital speed of Jupiter.

Physics & Space Science

An encounter in which a large galaxy absorbs a smaller galaxy is referred to as

A. "Galactic cannibalism". B. "Galactic assimilation". C. "Galactic absorption". D. "Galactic merger".

Physics & Space Science

We are not yet capable of detecting life on planets around other stars. But as our technology develops, our first real chance of detecting such life will probably come from ________

A) determining the orbital properties of the planets B) examining high-resolution images of the planets made by orbiting telescopes C) examining spectral lines from the atmospheres of distant planets D) sending spacecraft to study the planets up close

Physics & Space Science

As a proton moves in the direction the electric field lines

A) it is moving from low potential to high potential and gaining electric potential energy. B) it is moving from low potential to high potential and losing electric potential energy. C) it is moving from high potential to low potential and gaining electric potential energy. D) it is moving from high potential to low potential and losing electric potential energy. E) both its electric potential and electric potential energy remain constant.

Physics & Space Science