Which statement best describes an atom?

a protons and neutrons grouped in a specific pattern

b protons and electrons spread around randomly

c a group of protons and neutrons that are surrounded by electrons

d a ball of electrons and neutrons surrounded by protons

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?

The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. at which position does the boulder have the greatest kinetic energy? a b c d