The strength of force is expressed by a. Weight b. mass

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

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?

Decreased sensitivity to an unchanging stimulus is known as