Name three types of electromagnetic radiation that can travel through empty space

How does the Earth's position in Space, mass and atmosphere allow the planet to support life?

Which variable stars have pulsation periods between 1.5 hours and 1.2 days? A. Cepheid variables B. Protostars C. RR Lyrae variables D. Nebulas

Hydrochloric acid and sodium hydroxide can be combined in equal ratios to form sodium chloride and water. Which best explains the reaction? A: The total volume produced by sodium hydroxide will result in the same volume of sodium chloride.

What will happen to the pressure of a container of gas if the volume of the gas is tripled and the temperature is doubled?

Saturn's moon Mimas has an orbital period of 82,800 s at a distance of 1.87x10^8m from Saturn. Using m central m = (4n^2d^3/GT^2) 1 determine Saturn's mass. Determine Saturn's mass by rearranging Newton's version of Kepler's Third Law.

Ethan pushes a wooden box across a carpet floor then he pushes the same box across a smooth marble floor why does Ethan find it easier to push the box on the marble floor than carpet floor

Let's now apply our equations for the normal modes of open and closed pipes. On a day when the speed of sound is 345 m/s, the fundamental frequency of an open organ pipe is 690 Hz.

Suppose you are an observer standing on the Moon, looking back at Earth. If the moon is in the waxingquarter phase, what phase of the Earth would you see? A. waxing quarter B. full C. new D. waning quarter E. none; the Earth doesn't have phases

How many chromosomes will an elephant's sperm have?

Would the springs inside a bathroom scale be more compressed or less compressed if you weighed yourself in an elevator that was moving upward at constant velocity