A crown glass prism of refracting angle 6° is to be achromatized for red and blue light using a flint glass prism. Find the angle of the second prism and also the mean deviation from the following data: Refractive index for crown glass, red 1.520 blue 1.531, Refractive index for flint glass, red 1.662 blue 1.684. please help me ASAP
​

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?