At what height above the earth is the acceleration due to gravity 15.0% of its value at the surface?

What’s #16 asking and how do i solve it?

What are the north and south poles of a solenoid change with?

Because atoms of elements in the same group of thbecause atoms of elements in the same group of the periodic table have the same number of neutrons, they have similar properties. select the best answer from the choices provided t fe periodic table have the same number of neutrons, they have similar properties. select the best answer from the choices provided t f