The average distance from the sun to Pluto is approximately 6.10 × 109 km. How long does it take light from the sun to reach Pluto? (The speed of light is about 3.00 × 105 km/s).

When using two-wire cable to feed a 240-v appliance that does not require a neutral wire, you should a. mark both ends of the white wire green. b. use the cable as is. c. use only the black wire. d. mark both ends and any exposed area of the white wire black.

What sort of waves exhibit the doppler effect?

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.