A woman lifts a barbell 2.0 m in 5.0 s. If she lifts it the same distance in 10 s, the work done by her is: a. four times as great

b. two times as great

c. the same

d. half as great

e. one-fourth as great

Honestly "global warming" may be a slight possiblity, however they called it "climate change" because its not real, in fact we had one of our coldest days here not too long ago, and the "issues" with this subject is a blindfold for actual problems.

An atom's smaller negative particles are at a distance from the central positive particles, so the negative particles are easier to move. 

Answer body lying face up ;

How are period and frequency related to each other? dperiod is the reciprocal of frequency.