How many protons are in a element with an atomic number of 8 and a mass number of 18? A: 3 B: 8 C: 10 D: 18

Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?

Ascientific blank must be testable and capable of being proven false?

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little