The radius of earth is 6,370,000m. Express this measurement in km in scientific notation with the correct number of significant digits.

lan wrote the following phrase to describe the movement of particles in a state of matter. "Spheres jiggle together in a locked position." Which state of matter did Alan most likely describe? Gas Liquid Solid Plasma

Describe 1 way to reduce the shortage of food for a growing human population.

When we observe a distant galaxy whose photons have traveled for 10 billion years before reaching earth, we are seeing that galaxy as it was when the universe was?

A plane travels a total distance of 1,223. If the the plane travels 460 mph for 75 minutes. Then, how long in minutes does it travel going 439 mph?

Suppose you heat up an oven and boil a pot of water. Which of the following explains why you would be burned by sticking your hand briefly in the pot but not by sticking your hand briefly in the oven?

How is Electric current able to flow?

In a series circuit, loads which have the same voltage dropped across them will have?.

When a brick is dropped from the roof of a house, it lands on the ground with a speed v. What will the speed at ground level be for an identical brick dropped from a roof twice as high as the first one?

The scientific method begins with recognizing a problem. The recognized problem in this scenario is, "Why is the printer in the office not working?" Choose the hypotheses that are testable and from which an experiment can be formed.

The correctly balanced equation for H2O2 → H2O + O2 is