The man pulls on the cord with a force of 350N. Represent this force acting on the support A, as a Cartesian vector and determine its direction

In a system, when potential energy decreases, then entropy also decreases. true false

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?

Which planet do you think would be easiest for humans to colonize some day?