The boiling point of water is 212°f, while -460°f is its absolute lowest temperature. find the difference between these two temperatures.

672 °F

Step-by-step explanation:

The difference is found by subtraction, or by adding the opposite.

... 212 °F - (-460 °F) = 212 °F + 460 °F = 672 °F

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.