A1.35-kg block is pushed against a vertical wall by means of a spring (k = 730 n/m). the coefficient of static friction between the block and the wall is 0.48. what is the minimum compression in the spring to prevent the block from slipping down?

Apulley with a mechanical advantage of 5 will require you to pull times the amount of rope. a. 1/5 b. 5 c. 10 d. 15

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?

Which composition of water moves to begin a deepwater current?