A rock is thrown horizontally from a bridge with a velocity of 19m/s. It takes the rock 3.4 s to strike the water below. What is the magnitude of the velocity of the rock just before it hits the water?

The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions

The precision of a laboratory instrument is ± 0.05 g. the accepted value for your measurement is 7.92 g. which measurements are in the accepted range? check all that apply. 7.85 g 7.89 g 7.91 g 7.97 g 7.99 g

In a good thermo flask the main cause of heat loss is