Acylinder is fitted with a piston, beneath which is a spring, as in the drawing. the cylinder is open at the top. friction is absent. the spring constant of the spring is 3900 n/m. the piston has a negligible mass and a radius of 0.020 m.

a) when air beneath the piston is completely pumped out, how much does the atmospheric pressure cause the spring to compress?
b) how much work does the atmospheric pressure do in compressing the spring?

Any color picture tube and electric field exerts a net force of magnitude 1.68x 10^-13 n on an electron the rest mass of an electron is 9.11 x 10^-13 what is the electron acceleration?

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2