Which of these is an organ? A) blood cells B) the stomach C) connective tissue D) the respiratory system

Which of the following statements are true? Check all that apply. Check all that apply. The speed of sound is constant. The pitch of a sound is determined by its frequency. The loudness of a sound is related it its amplitude.

What is this process called when a liquid turns into gas

How many electrons in an atom can have the same quantum state?

A block and tackle pulley system of 6 pulley uses 300N to overcome 1200N. find efficiency

Assuming 70% of Earth's surface is covered in water at an average depth of 2.5 mi, estimate the mass of the water on Earth in Kilograms.

A 900-kg car traveling east at 15.0 m/s collides with a 750-kg car traveling north at 20.0 m/s. The cars stick together. Assume that any other unbalanced forces are negligible. What is the speed of the wreckage just after the collision?

What is the spine also known as

If a man has a mass of 74 kilograms runs 800 meters in 150 seconds, what is his average momentum?

Two lamps one rated 40W at 220 V and the other 60W at 220 V are connected in parallel to the electric supply at 220V.

A 45.0-kg person steps on a scale in an elevator. The scale reads 460 n. What is the magnitude of the acceleration of the elevator?