The interaction between two waves that meet is called

a. reflection.

b. refraction.

c. diffraction.

d. interference.

A bat flew 90 kilometers in one evening, returning to its cave after 3 hours. What was the bat's average speed? A) 30 km/h B) 60 km/h C) 90 km/h D) 270 km/h

An egg is dropped from a height of 20 m. The egg is in free fall the entire time it falls. What wilLthe speed of the egg be when it lands after fallinG for 2 seconds?

A rolling ball has 18 joules of kinetic energy and is rolling 3 m/s find its mass

Which of the following types of light can humans see with their eyes? o Microwaves o Radio Waves o Gamma rays o Humans cannot see any of the above with their eyes.

What keeps the protons in an atomic nucleus from flying away from one another

A sample of helium gas has a volume of 900. milliliters and a pressure of 2.50 atm at 298 K. What is the new pressure when the temperature is changed to 336 K and the volume is decreased to 450. milliliters?

Which type of sensor uses a burn-off circuit

Jack drops a tennis ball from the top of a skyscraper allowing it to fall freely. Neglecting air resistance, what is the velocity of the tennis ball at the end of 5 seconds? A.) 9.81m/s^2 B.) 49.0m/s^2 C.) 29.4m/s^2 D.) 88.7m/s^2

At one end of a production line, Isaac puts peaches into cans on a conveyor belt. He fills 18 cans per minute. As soon as Isaac has filled 670 cans on the conveyor belt, Albert starts putting lids on the cans at the other end of the production line.

Identify the triangular-shaped depositional feature indicated by letter c