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.​

Aballet student who learns with the of his instructor is demonstrating learning.

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?