Given that the gravitational pull of Pluto is half that of the earth's, calculate the mass and weight of an object on Pluto if that same object has a weight of 660N on the moon​

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

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination.at the turning point, how far is the second student from the destination?

Give an example in which the electrical energy changes to light energy