A particular spring does not obey Hooke's law (F(x) = -kx), but rather is described by F(x)=-k x-kax? x is the displacement of the spring from equilibrium and the constants k, and k2 are given below. Randomized Variables ki = 6.9 N/m k2 = 9.9 N/m2 * 50% Part (a) Input an expression for the potential energy of the spring as a function of position. Part (b) What is the magnitude of the restoring force of this spring, in newtons, if it is stretched 26.5 cm from equilibrium?

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue

Which subatomic particle has a negative charge

What causes the formation of ocean currents?