When nasa was communicating with astronauts on the moon, the time from sending on the earth to receiving on the moon was 1.33 s. find the distance from earth to the moon. (the speed of radio waves is 3.00 ´ 108 m/s.)

Asample of a gaseous substance changes into a liquid

A40.0 l tank of ammonia has a pressure of 12.7 kpa. calculate the. volume of the ammonia if it’s pressure is changed to 8.4 kpa while its temperature remains constant.

This chart shows characteristics of three different types of waves. which statement is best supported by the information in the chart? wave x and wave y are mechanical waves, and wave z is an electromagnetic wave. wave x and wave y are electromagnetic waves, and wave z is a mechanical wave. wave x and wave z are electromagnetic waves, and wave y is a mechanical wave. wave x and wave z are mechanical waves, and wave y is an electromagnetic wave.