Harper touches a negatively charged plastic rod to a rubber ball. How are the negative charges distributed on the rubber ball? A They move to the bottom surface of the ball
B They stay on the surface where the rod touches the ball
c They are evenly distributed on the inside of the ball
OD They are evenly distributed on the surface of the bal

Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg

Aplane flying horizontally at an altitude of 1 mile and a speed of of 500mih passes directly over a radar station. find the rate at which the distance from the plane to the station is increasing when it is 2mi away from the station.

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.