If an element with an atomic number of 51 and an atomic mass of 121, how many neutrons does it have?

How many laps around a volleyball court is a mile?

For every increase in mass the gravitational force blank If the total mass increase by effective for the gravitational force

Determine the x and y coordinates xcg and ycg of the center of gravity of the three coins described in part a.

A train travels at 20m/s for 30 seconds how far has it moved?

The force it would take to accelerate a 700-kg car at a rate of 5 m/s2 is

Diffraction and interference demonstrate which concept? A) particle nature of light B) wave nature of light C) polarization of light D) refraction of light

Which is an example of a solution? A) sugar water B) muddy water C) sand and water D) cereal and milk

An atom of this element would have a very easy time losing one electron to form an ionic bond with an atom of an element that would easily accept it:

Name three devices or inventions which are designed to increase friction.

Which statement best describes heating by conduction? A.) Air molecules touch the warm ground, heating them up B.) Air at the equator rises and sinks at the poles C.) Sunlight travels through space without the aid of fluids or solids D.