Lightning is created when charges flow rapidly from

a. ground to cloud.

b. cloud to ground.

c. cloud to cloud.

d. all of these.'

The table below shows the distance d (t) in feet that an object travels in t seconds: t (second) d (t) (feet) 2 64 4 256 6 576 8 1024 What is the average rate of change of d (t) between 2 seconds and 6 seconds, and what does it represent?

What happens during an equinox?

An earth satellite in an elliptical orbit travels fastest when it is

Jenny wanted to make 3 molecules of a substance made with aluminum and oxygen. How many aluminum and oxygen atoms will she need?

How do we use the electromagnetic spectrum to determine how far things are in the universe and how they move?

A child is sledding. He starts at the top of the hill with a velocity of zero, and 3 seconds later he is speeding down the hill at 12 meters per second. What is the child's acceleration?

An accelerating voltage

A speck of dust on a spinning dvd has a centripetal accelera - tion of 20 m/s2. a. what is the acceleration of a different speck of dust that is twice as far from the center of the disk? b.

An object travels 8 meters in the first second of travel, 8 meters again during the second second of travel, and 8 meters again during the third second. Its acceleration is A. 0 m/s^2 B. 8 m/s^2 C. 16 m/s^2 D. 32 m/s^2

Why does life be life