What colours do you see in a solar spectrum? which colour is the closest to the bright spot? which colour is the farthest from the bright spot? (if u cant answer all answer 1)

The cerebellum controls? thirst sensations sleep-wake cycles hand-eye coordination heart rate and pulse

Which notation is used to represent an alpha particle? a. b. c. d.

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?