A 77.2 kg soccer player is running at 8 m/s. What is his momentum in kg⋅m/s?

Phase changes are chemical changes. true or false

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.

If you put a helium-filled balloon in the refrigerator, what will happen?