A train travels 67 kilometers in 1 hours, and then 81 kilometers in 5 hours. What is its average speed?

Why do metals conduct electricity? A. Metals hang on tightly to their electrons. B. Electrons flow freely in metallic bonds. C. electrons are good at insulating from heat. D. Metals are slippery.

In a food chain, which trophic level contains the greatest amount of energy? A. decomposers B. producers C. herbivores D. carnivores

Whats the gravity of Jupiter?

Convert 15 joule into erg.

A horse has a kinetic energy of 29,400 j if the horse has a mass of 300 kg what is the horses speed?

The force of gravity acts upon meteors from the rocky asteroid belt between mars and Jupiter. Where is the force of gravity most likely to pull these meteors

Sally turns on her cellular telephone to speak to her friend who is located thousands of miles away. Which of the following best describes how such a telephone is able to transmit and receive information? A.

Calculate the gravitational potential energy relative to the ground when an 82 kg person climbs to the top of a 2.0 m stepladder.

A rock is thrown from a cliff and hits the ground five seconds later at a distance of 50 m from the cliff how high was a cliff

A 15.0 m long plane is inclined at 30.0 degrees. If the coefficient of friction is 0.426, what force is required to move a 40.0 kg mass from rest at the bottom on the plane to the top of the plane with a final velocity of 8.00 m/s?