After the discovery of the electron, scientists knew that atoms must also have positively changed particles because?

A. Atoms have mass

B. Atoms have electrical charge

C. Atoms have neutral charge

What elements are stars mostly made of? How do we know this?

A transverse wave is traveling on a string stretched along the horizontal x-axis. The equation for the vertical displacement y of the string is given by y = 0.0020 cos[? (15x - 52t) ], where all quantities are in SI units.

State some properties of metals along with their importance

Einstein is probably most known for his equation E = mc2, where E = the energy of a particle of mass = m, and c = the speed of light. If "m" and "c" are in MKS units, what are the MKS units of E?

Compare the temperature and thermal energy of hot soup in a small mug and that of hot soup in a large bowl.

Is the muzzle velocity a scalar or vector quantity?

How many day does it take the sun to came out?

Using the word "more" to mean "I want another cookie" is an example of a (n) :

Ohm's law is I = V : R. What is the current of a circuit with a 3.0-volt battery and 1.0 ohm of resistance? The current of a circuit with a 3.0-volt battery and 1.0 ohm of resistance is (blank) amps.

Why do marine west coast climates have much precipitation