When energy is produced in a reaction it

A. is newly created energy

B. is from the energy in the reactants

C. increases the total amount of energy in the universe

When clothes are run through a dryer they often become charged and stick together. What causes the charges to separate

Taken parallel to the base, which of the following solids has a cross section that is not a rectangle? A. rectangular pyramid B. square pyramid C. triangular pyramid D. rectangular prism

What type of pressure is transmitted by fluids

One of the most efficient engines built so far has the following characteristics: combustion chamber temperature = 1900°C, exhaust temperature = 430°C, 7.0 * 109 cal of fuel produces 1.4 * 1010 J of work in one hour.

Forces of attraction limit the motion of particles most in A. a solid. B. a liquid. C. a gas. D. both b and c

What are the two factors that influence the composition of beach material

Which of the following indicates that a ChemicL change has taken place? (A) a change from liquid to a gas (B) an increase in the volume of a substance (C) a change in the color of a substance (D) a change from a solid to a liquid A precipitate is a

Which of these circuit schematics has an ammeter?

What is the meaning of the word corrosion?

Which change occurs when an atom undergoes alpha decay?