When an ice pack is applied to an injury, thermal energy from the injured area transfers to the ice, causing the blood vessels within the area to constrict, which reduces the swelling. how is thermal energy transferred in this scenario?
1.) conduction
2.) convection
3.) radiation

A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.