Which type of electromagnetic radiation is useful in communications technology

How much heat is needed to raise the temperature of 8g of water by 18oC?

Two objects are thrown from the top of a tall building. One is thrown up, and the other is thrown down, both with the same initial speed. What are their speeds when they hit the street?

1. a baseball hits a home run, according to Newton's laws of motion which of the following statements could be true in this scenario: statement 1: the bat pushes on the ball with the same force as the ball pushes on the bat.

Why would it be hard to find the ideal light intensity if the temperure were very hot or cold?

An ant can travel approximately 30 meters per minute. how many meters could an ant move in 45 minutes

What is a change in velocity per time

Recall specific heat of water is 4186 j/kg/C. Find the specific heat of sample. Water. Sample Mass 109 192 Internal temperature. 21. 67 Final temperature. 30.1. 30.1

During which period did the first large herbivores and carnivores appear?

What is the reason behind the tail of a comet moving away from the Sun? A The gravity of Jupiter pulls it away from the Sun. The nucleus of the comet propels it away from the Sun. C. The radiation pressure and solar wind propels it away from the Sun.

Calculate the energy released as heat when 51.60 g Cu 2 O (s) undergo oxidation at constant pressure.