4. a jet pilot takes his aircraft in a vertical loop. a) if the jet is moving at a speed of 840 km/h at the
lowest point of the loop, determine the minimum radius of the circle so that the centripetal
acceleration at the lowest point does not exceed 6.0 g's. b) calculate the 78 kg pilot's effective
weight (the force with which the seat pushes up on him) at the bottom of the circle, and c) at the top
of the circle (assume the same speed).

Two thin 80.0- cm rods are oriented at right angles to each other. each rod has one end at the origin of the coordinates, and one of them extends along the x- axis while the other extends along the yaxis. the rod along the x- axis carries a charge of - 15.0 μ c distributed uniformly along its length, and the other rod carries 15.0 μ c uniformly over its length. find the magnitude and direction of the net electrical force that these two rods exert on an electron located at the point (40.0 cm, 40.0 cm). (e

Hey student studies gravity using objects that have the same mass which two objects have the greatest gravitational force acting between them a. 100kg 1.0m 100kg b. 100kg 2.0m 100kg c. 100kg 2.0m 100kg big d. 100kg big 3.0m 100kg big

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?