Which of the following is an example of a difference between planets in the solar system? A planet can have a surface made of either liquid or gas.
Some planets have thick atmospheres, while others have thin atmospheres.
A planet must have a moon, but it can differ in terms of its size.
All planets have rings, but some are very hard to see with your eyes.

The doctor lands his tardis on a planet whose radius is 1.2x10^7m the acceleration due to gravity is 18m/s^2. what is the mass of the planet

When connected to a 120 v outlet, a light bulb consumed a power of 50.4 watts. what is the current flowing through it?

Onsider a u-tube whose arms are open to the atmosphere. now, equal volumes of water (ρ = 62.4 lbm/ft3) and light oil (ρ = 49.3 lbm/ft3) are poured from different arms. a person blows from the oil side of the u-tube until the contact surface of the two fluids moves to the bottom of the u-tube, and thus the liquid levels in the two arms are the same. if the fluid height in each arm is 31 in, determine the gage pressure the person exerts on the oil by blowing. (round the final answer to three decimal places.)