In order to have an airplane ascend, it needs to have more___ than weight. *
Drag
Weight
Lift
Thrust

Any color picture tube and electric field exerts a net force of magnitude 1.68x 10^-13 n on an electron the rest mass of an electron is 9.11 x 10^-13 what is the electron acceleration?

Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?