Which of the following employs the use of an external combustion engine?

Which will speed up a chemical reaction? A. Apply heat. B. Increase the concentration of the reactants. C. Grind up the substance, so there is more surface area. D. all of the above

If your boat weighs 1600 n, how much water will it displace when it's floating motionless at the surface of a lake?

How are heat and light waves produced on and in the sun?

What are words that involve waves (amplitude, energy, frequency, etc)

A worker pushes horizontally on a large crate with a force of 170 N, and the crate is moved 3.6 m. How much work was done

According to the first law of thermodynamics, what could happen when heat is added to a system? The internal energy of the system decreases. The heat is turned into work done by the system. New energy is created within the system.

How does a parallel circuit differ from a series circuit? A. A parallel circuit has one path for electrons, but a series circuit has more than one path. B. A series circuit has one path for electrons, but a parallel circuit has more than one path. C.

When a potassium ion (k+) enters a gaurd cell it creates a solution of what?

If two plates diverge at a rate of 1.3 cm/year, how much farther apart will the plates be after 200 million years?

What is root-mean-square current?