In an experiment conducted using the young's double-slit apparatus, the separation between the slits is 20 µm. a first-order constructive interference fringe appears at an angle of 2.5o from the zeroth order (central) fringe.
a. what wavelength of light is used in the experiment?
b. at what angle would the fourth-order (m = 4) bright fringe appear?
c. at what angle would the fourth-order (m=4) dark fringe appear?

What is created when solids,liquids,an gases mix with one another

Which is not true of the intertropical convergence zone? a) it features heavy precipitation b) it's where the trade winds collidec) it's a high-pressure zone with sinking air d) it is also known as the doldrums

For the below questions, consider a consumer that consumes two goods, x and z with the following utility function. u with bar on top space equals space x to the power of 1 third end exponent z to the power of 2 over 3 end exponent suppose initial values for income and the prices of goods x and z are y equals 90, p subscript x equals space 10, and p subscript z equals 15 respectively, then the price of good x falls to syntax error from line 1 column 89 to line 1 column 100. unexpected '\'.. what is the magnitude of the total effect