When sodium and oxygen react to form an ionic compound, the mass of the compound the sum of the masses of the individual elements.

is less than
is greater than
is equal to
can be greater than or less than

Modify the equation fδt=δ (mv) to find the force of friction.

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples

Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.