What is the average velocity of a car traveling South on a straight road for two hours returns to the starting point after three hours.

What are atoms of the same element with varying number of neutrons

Which of these is constant for all types of electromagnetic radiation in a vacuum? select one: a. wavelength b. frequency c. photon energy d. amplitude e. velocity

Estimate the magnitude of the electric field due to the proton in a hydrogen atom at a distance of 5.29×10 to the power of −11 m, the expected position of the electron in the atom.