Why is viscosity an important property of matter?

It governs the sealing effect of oils and the rate of oil consumption as well as determines the ease with which machines may be started or operated under varying temperature conditions, particularly in cold climates. viscosity is a measure of an oil's resistance to flow.

Explanation:

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

i don't understand. explain it clearly