Two masses M and 2M are connected by a string that passes over light frictionless pulley. Mass M slides an a 40 degrees inclined plane, while mass 2M suspended by the string. The coefficient of kinetic friction between the mass M and the incline is 0.15. Find the magnitude of the acceleration of the suspended mass 2M as it falls.

Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s

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