The electrical conductivity of a substance depends on the ability of the in it to move. a) electrons b) neutrons c) protons d) quarks

What color of light must blue light mix with to create white light? a. yellow b. white c. blue d. green

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

Ineed asap! list 3 examples in which friction us or makes things easier in our daily life. explain the effect of friction for each. *make sure you explain the effect of friction for each example! *