Is the following chemical equation balanced? 2Na + 2H 2 O 2NaOH + H 2

What type of energy from the movement or flow of electrons? mechanical energy potential energy chemical energy electrical energy

Starting at 9 A. M. you hike for 3 hours at an average speed of 5 mph. You stop for lunch from noon until 3 P. M. What is your average speed over the interval from 9 A. M to 3 P. M.?

A 500-kg roller coaster car travels with some initial velocity along a track that is 5 m above the ground. The car goes down a small hill and then coasts back up a higher hill. The second hill is 12 m above the ground.

Which of these sentences exhibits proper capitalization? A. Next Saturday afternoon, we are traveling to the great city of London. B. Next Saturday Afternoon, we are traveling to the great city of London. C.

In our everyday environment, diffraction is much more evident for sound waves than for light waves. Why is this so?

Which force does not operate at a distance of 1 m? A. Weak nuclear O B. Electric C. Gravitational D. Magnetic

The deflection of alpha particles in rutherford's gold foil experiments resulted in what change to the atomic model?

What happens during evaporation? A liquid changes to a gas. A liquid changes to a solid. A gas changes to a liquid. A solid changes to a liquid.

In a nuclear reaction, what is the name for the difference in mass when one type of matter is converted into another? A. radiation B. nucleons C. antimatter D. mass defect

Aspect of the physical world