(ii) The refractive index of glass for red light is 1.52 and for blue light is 1.56. Suggest and explain what effect this difference in refractive index has on focal length if the lights pass through a converging lens,

pleaa help me

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.