A rock of mass m is thrown horizontally off a building from a height h as shown above. The speed of the rock as it leaves the thrower's hand at the edge of the building is vo
How much time does it take the rock to travel from the edge of the building to the ground?

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

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.