Which book has kinetic energy?

A book on a teacher's table

A book in a students locker

A book lying on a shelf in the library

A book falling from a backpack

How could the combustibility of a substance influence how the substances used

Which of these is the best definition of a fuel cell?

Earth has an abundant amount of iron, but also has many elements heavier than iron. Form a hypothesis

The frequency of a wave traveling through the air of a hot, dry desert is 1,200 hertz. Its wavelength is 0.300 meters. What is the speed of the wave?

If humans evolved from apes or chimps, why are the chimps and apes still here?

An apple falls from a tree and hits the ground 9.98 m below. with what speed will it hit the ground

Jamal wanted only to test the effect of the free fall and so he put his system in a vacuum to prevent air resistance. In free fall, will the crumpled or flat paper reach the ground first? The crumpled paper will reach the ground first.

What coefficients would balance the following equation? __Al + __O2 → __Al2O3 A. 2Al + 3O2 → 1Al2O3 B. 2Al + 3O2 → 2Al2O3 C. 3Al + 3O2 → 2Al2O3 D. 4Al + 3O2 → 2Al2O3

What do we call the quantity force multiplied by distance

The electromagnetic waves with the most energy have the greatest period b) wavelength c) frequency d) color