If the total resistance of the circuit shown is 15 ohms, what is the value of resistor R? A. 6 ohms В. 9 ohms 34 12 ohms D. 18 ohms

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.