On Earth, water can exist as a solid, a liquid, or a gas. Why?

Which two objects repel each other? A. a proton and a neutron B. two neutrons C. a proton and an electron D. two protons

A 4.0 * 102-nm thick film of kerosene (n = 1.2) is floating on water. White light is normally incident on the film.

Explain why the phrase "by ordinary means" was added to the Law of Conservation of Energy

why is a person wearing a metal suit of metal armor protected from the blows of a sword? include the atomic structure of bonded metals in your answer

Why does venus appear so bright to the naked eye?

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