Suppose a 112 kg cart traveling 12 m/s hits and sticks to (non-moving) carr with mass of 98 kg. how fast in (m/s) will the two cars be going am instant after they hit?

a) 1.14 b) 6.4 c) 9.8 d) 5.11

state formula used to solve as well

An asteroid is discovered in a nearly circular orbit around the sun, with an orbital radius that is 2.47 times earth's. what is the asteroid's orbital period, its "year," in terms of earth years?

Which of the choices below is one of the primary gases found in the atmosphere? a. helium b. carbon dioxide c. nitrogen d. argon

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.