A double slit experiment is performed with light of wavelength 550 nm. The bright interference fringes are spaced 2.1 mm apart on the viewing screen. What will the fringe spacing be if the light is changed to a wavelength of 370 nm

c) up

hope this

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures

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1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.