What is ther atomic number of an element that has 2 electrons, 3 protons,
and 4 neutrons?

If two metal balls each have a charge of -10^-6 c and the repulsive force between them is 1 n, how far apart are they? (coulomb's constant is k = 9.0x 10^9 n-m^2/c^2? 9.5 m 9.0 mm 9.5 cm 0.9 m .

Arrange the images in order to show how lake-effect snow occurs.

What is a subatomic particle with a negative charge and very little mass?