Part a how much heat is required to warm 1.70 l of water from 28.0 ∘ c to 100.0 ∘ c ? (assume a density of 1.0g/ml for the water.)

An equinox occurs when a. neither end of earth's axis is tilted toward or away from the sun. b. the north end of earth's axis is tilted away from the sun. c. the north end of earth's axis is tilted toward the sun. d. earth's axis is parallel to the sun's rays. select the best answer from the choices provided a b c d

What kind of simple machine is a catapult?

Name two kinds of practical electric pumps.