What is erupting out of the geysers on Triton?

A) liquid water with basalt
B) liquid methane with a dark hydrocarbon slush
C) liquid nitrogen with carbon grit
D) liquid carbon dioxide with graphite
E) liquid hydrogen with dark helium ash


C

Physics & Space Science

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Estimate the rate of evaporation of acetone into 75ºF air from an open 4-inch-diameter by 8-inch-tall jar when the liquid acetone is 2 inches deep at the bottom of the jar and fresh air passes over the top of the jar.

What will be an ideal response?

Physics & Space Science

The charge per unit length on an insulator is 6.2 ?C/m. On a 2.0-m length of this material, what is the difference in the number of electrons and the number of protons?

a. There are 7.8 × 10^13 more electrons than protons. b. There are 7.8 × 10^13 more protons than electrons. c. There are 3.9 × 10^13 more protons than electrons. d. There are 3.9 × 10^13 more electrons than protons.

Physics & Space Science

You wish to obtain a magnification of -2 from a convex lens of focal length f. The only possible solution is to

A) place a virtual object at a distance 3f/2 from the lens. B) place a real object at a distance 3f/2 from the lens. C) place a virtual object at a distance 2f/3 from the lens. D) place a real object at a distance 2f/3 from the lens. E) place a virtual object at a distance 5f/3 from the lens.

Physics & Space Science

The metric prefix that means one thousand (1000) is

a. kilo-. b. centi-. c. mega-. d. milli-.

Physics & Space Science