which of the following is true? a) speed is velocity w a vector b) speed is a scalar w direction c) speed is velocity w direction d) velocity is speed w a direction

When a body falls to the earth, the earth also move up to meet it but the earth motion is not noticeable. why?

Maxwell guessed that visible light was an electromagnetic wave because of its

A jet plane leaves the stratosphere and returns to the ground. How does the temperature outside the jet change during its descent through the troposphere? A. It decreases and then increases. B. It decreases steadily. C. It increases steadily. D.

Find the speed of a rock which is thrown off the top of a 20 m tall building at 15 m/s when it makes contact with a bird which is flying at an altitude of 10 m above the ground

A circuit contain a 5-ohm, a3-ohm, and an 8-ohm resistor in series. What is the total resistance of the circuit?

What is the center of a tornado called A. the eye B. The center C. The middle road D. The vortex

Is it legal in Florida for a math teacher forces the kids to do push ups?

Acceleration is best defined as the rate of change of blank of an object

Zirconium has an atomic number of 40. How many neutrons are there in an isotope of zirconium-92?

If a glass is knocked off of a table that is 1.4m tall, how long does it take for the glass to hit the ground?