Which of the following examples demonstrates acceleration? a boy running at a constant speed across the street. a car traveling at 60 mph turns left around a curve. a horse standing in a pasture. a track star is maintaining the same speed as he crosses the finish line.

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Select the most likely product for this reaction: koh(aq) + co2(g) – ? k2co3(aq) + h2o(1) k(s) + h2(g) + o2(g) k(s) + co3(9) +h2

How many joules of heat are required to raise thetemperature of 750 g of water from 11.0 °c to 19.0 °c?