Which part of the ear picks up vibrations from the atmosphere

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

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical

Which of the following is not an appropriate unit for acceleration? (kg/12 mihr? m/min/sec cm/30c?