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

Examine the scenario. A positively charged conductor is brought in contact with a negative conductor. Which choice most accurately describes the motion of charge between these two objects?

Consider a rectangular ice floe 5.00 m high, 4.00 m long, and 3.00 m wide. a) What percentage of the ice floe is below the water line if it floats in sea water?

Suppose a chinook salmon needs to jump a waterfall that is 1.43 m high. (a) If the fish starts from a distance 1.

Two polarizers are held in front of a light source such that their transmission axes are parallel. As the angle between the two transmission axes increases toward 90°, which of the following is true? A.

The half-life of cobalt-60 is 5 years. How old is a sample of cobalt-60 if only one-eighth of the original sample is still cobalt-60? 5 years 10 years 15 years 20 years

Describe a beach that was near stormy seas and powerful waves

We all depend on electricity. Most electricity is created by electromagnetic generators at large power plants and distributed through an electric grid.

A rock with mass m = 4.00 kg falls from rest in a viscous medium. The rock is acted on by a net constant downward force of F = 17.

On arrival at a vehicle collision, you observe a small fire in the engine compartment. A bystander is attempting to smother the fire with a jacket as you approach with an A-B-C extinguisher from your ambulance.

Gertrude writes a short story in which the main character must enter a nuclear-powered spaceship's engine room that has lost its shielding in order to prevent the engine from flooding the rest of the ship with radiation.