Saturn's rings are

a. composed of ice particles.
b. in the plane of the planet's equator.
c. within the planet's Roche limit.
d. all of the above
e. none of the above


D

Physics & Space Science

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The ground state of hydrogen has two closely-spaced energy levels, where oneelectron is spinning up and the other is spinning down. This energy transition corresponds to releasing excess energy as a photon at what wavelength?

a. 21 centimeters b. 21 millimeters c. 21 meters d. 22.2 centimeters e. 22.2 millimeters

Physics & Space Science

The Sun's magnetic field has been traced out far beyond the orbit of Pluto and even Sedna

Indicate whether the statement is true or false

Physics & Space Science

A single-slit diffraction pattern is formed on a distant screen. Assuming the angles involved are small, by what factor will the width of the central bright spot on the screen change if the wavelength is doubled?

A) It will be cut to one-quarter its original size. B) It will be cut in half. C) It will double. D) It will become four times as large. E) It will become eight times as large.

Physics & Space Science

As one stretches a metal wire, which condition is reached first?

A) the breaking point B) the proportional limit C) the elastic limit

Physics & Space Science