Which of the following best explains why cells remove waste?

A. To create energy

B. To form identical cells

C. To break down glucose

D. To maintain homeostasis

Explain why a moving object cannot come to a stop instantaneously (in zero seconds). Hint: Think about the acceleration that would be required.

A go-cart travels around a flat, horizontal, circular track with a radius of 25 meters. The mass of the go-cart with the rider is 200. kilograms. The magnitude of the maximum centripetal force exerted by the track on the go-cart is 1200. newtons.

What relationship can you state about the force with which something is hit and its motion?

investigations never involve hypotheses.

In which medium does sound travel the fastest? A. salt water B. fresh water C. air * ** D. cast iron A wave has a wavelength of 10 mm and a frequency of 5 hertz. What is its speed? A. 50 mm/s B. 50 hertz/s C. 2 mm/s 0.

Claudia throws a baseball to her dog. Which free-body diagram shows the baseball when it's flying horizontally in midair? (Assume no air resistance.)

Which of the following substances will show the smallest change in temperature when equal amounts of energy are absorbed? water air sand concrete

The downward acceleration of a falling body on Earth is 9.81m/s2. On the moon the same quantity is 1.62m/s2. An astronaut in a space suit has a mass of 145kg.

Explain how a guitar produces sound by using the terms standing waves and resonance.

Why can only igneous rock be formed directly from magma?