What dertermines if a chemical reaction releases heat

Which name is given to the type of friction that objects falling through air experience?

Which type of wall would make the best soundproofing for room?

A dockworker loading crates on a ship finds that a 25-kg crate, initially at rest on a horizontal surface, requires a 72-N horizontal force to set it in motion.

What is mass loss and how does it figure in the death of a star? is the sun undergoing mass loss

A wave travels at a speed of 242 m/sif the distance between crest is 0.11m what is the frequency of the wave

Which statement is true for electric field lines? A. Field lines should always be parallel to the equipotential lines. B. Field lines should always be perpendicular to the equipotential lines. C. Field lines should always be parallel to each other.

What distance was an object moved by a force of 40 N if the work was 600 joules

How do I use a metric conversions chart

Do you think Pluto should be considered a planet? Why or why not?

An object starts from rest at time t = 0.00 s and moves in the + x direction with constant acceleration. The object travels 14.0 m from time t = 1.00 s to time t = 2.00 s. What is the acceleration of the object? a) 5.20 m/s^2 b) 10.4 m/s^2 c) 8.