GUT theories predict that protons will eventually decay, causing all solid objects in the universe to fall apart if the universe keeps expanding forever

Indicate whether the statement is true or false


TRUE

Physics & Space Science

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In the Bohr model of the atom, a photon may be _________ when an electron jumps from a large, high energy orbit to a smaller, low energy orbit

Fill in the blank(s) with correct word

Physics & Space Science

Radial velocity is that component of an object's velocity that is directed perpendicular to an observer's line of sight

Indicate whether the statement is true or false

Physics & Space Science

Compared to our Sun, most stars in the halo are

A) old, red, and bright and have fewer heavy elements. B) old, red, and dim and have many more heavy elements. C) young, red, and dim and have fewer heavy elements. D) old, red, and dim and have fewer heavy elements. E) young, blue, and bright and have many more heavy elements.

Physics & Space Science

What did Rutherford's famous scattering experiment help to prove in his day?

A. The nucleus of an atom is positively charged. B. The nucleus of an atom takes up a large portion of the space in an atom. C. The scattering with the gold foil could either be due to a single interaction with a nucleus or multiple interactions with electrons. D. Alpha particles are neutral and massive. E. Thomson's model was essentially correct.

Physics & Space Science