Three forces act on a moving object. One force has a magnitude of 77.1 N and is directed due north. Another has a magnitude of 51.3 N and is directed due west. What must be (a) the magnitude and (b) the direction of the third force, such that the object continues to move with a constant velocity

if you already have the answer to (a), then just work out how many periods there are in 1 minute, and that's the answer to (c).

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it