A force is needed between the tires of a car and the road in order for the car to turn. The force needed depends on three variables: 1) The force is directly proportional to the mass of the car. 2) The force is directly proportional to the car's speed squared. 3) The force is inversely proportional to the radius of the turn. Write a single equation relating force, mass, speed and radius based on the proportionalities given above.​

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

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.

Aball is thrown vertically upwards from the top of a tower with a speed of 100m/s.it strikes the pound near the base of the tower after 25sec . the height of the tower is