How do drugs change one's feelings, perceptions, and actions?

Aregular polygon has angkes of size 150° each.how many side has the polygon

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

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?