What is the remainder when a’ - 4 is divided by a+2?

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).

Acone with radius 5 cm and height 12 cm how many cm ?

Which is greater or equal 312 mg or 312 dg