• Light that has a 650-nm wavelength is incident upon two narrow slits that are separated by 0.500 mm. An interference pattern from the slits is projected onto a screen that is 3.00 m away. (a) What is the separation distance on the screen of the first bright fringe from the central bright fringe? (b) What is the separation distance on the screen of the second dark fringe from the central bright fringe?

(a) 3.9 mm

(b) 5.85 mm

Explanation:

Given that:

d = 0.500 mm, we need to convert this to meters so, d = 5.0 × m

lambda = 650 nm, this has to be converted to meters too so,

lambda = 6.5 × m and L = 3.00 m

(the symbol for lambda is not available so I'm just using the worded form)

(a) the general formula for finding the interference pattern is

dsin(theta) = nlambda

where sin(theta) = since the angle is not provided and n = 1 here since it refers to first bright fringe

(5.0 × )() = (1)(6.5 × )

= [(3)(6.5 × )] ÷ (5.0 × )

= 0.0039 m = 3.9 mm

(b) for the dark fringe, the formula will now be

dsin(theta) = (n-0.5)lambda

(5.0 × )() = (2-0.5)(6.5 × )

= [(3)(1.5)(6.5 × )] ÷ (5.0 × )

= 0.00585 m = 5.85 mm

Hope that answers the question. Have a great day!

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force