Which is larger a food web or a food chain

2. When an object moves in a circular path, it accelerates toward the center of the circle as a result of a. terminal velocity c. centripetal force b. momentum d. friction

An axe blade is an example of which simple machine

If you see a spacecraft moving past you at 90% of the speed of light, and if you are able to watch a clock on the spacecraft, then according to special relativity you will see the clock

How we hear the Changes of frequency of sound?

Which of the following is not an application of Doppler technology? police speed guns weather radar ultrasound imaging of the liver determining the motion of a star

True or false: the phrase"crystal structure" refers to the repeating patterns in which atoms are arranged in a crystal

Discribe two differences between medeleevs periodic table and modern periodic table

1500 kg car increases its speed by 2 m/s for each second of travel. What is the net force acting on the car?

Why is it important for DNA to be copied before cell division?

In the water cycle, water vapor evaporates into the atmosphere and forms clouds through condensation. What happens in the atmosphere to the water in order for the clouds to form? A) Water drops mix with air pollution to form clouds.