5. For what purpose do bats use ultrasonic waves?

O Doppler effect

O sonar

O echolocation

O ultrasound

What does the word "karate" mean? A. Fight back B. Respect C. Kick and hit D. Empty hand

Describe a situation in which an electron will be affected by an external electric field but will not be affected by an external magnetic field.

The amount of oxygen in the reactants is 4 atoms. In the products, the oxygen is distributed to water (H20) and O2 gas.

A compass is a magnet and Earth is a magnet. How does the magnetism of a compass work with the magnetism of Earth so that a compass is a useful tool for navigating?

Use evidence to explain why glass refracted more light than air or water

Exoplanets (planets outside our solar system) are an active area of modern research. Suppose you read an article stating that there is a newly discovered planetary system with three planets.

A car with a mass 1200 kg accelerates at 1.89 m/s2. What is the total force exerted by the car on the road (answer in N to two decimal places) ?

How Long will it take a plane flying north from Miami to reach New York City 1800 km away if the average velocity of the plane is 940 km/h

If vector A = 5.5N NE and vector B = 10m N 30° W, what is the vector product of A*B

Which is the best desciption of a molecule?