Red light produces interference through two narrow slits spaced a distance 0.0050 cm apart. In air this light has a wavelength of 650 nm.

1. [2pt]
At what distance from the slits should we place a screen so that the first few interference brights are spaced
1.0 cm apart? (Be sure to use a consistent set of length units... All meters or all centimeters.)

Asmall metal bar, whose initial temperature was 10° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70° c if it is known that its temperature increases 2° during the first second? (the boiling temperature for water is 100° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98° c? (round your answer to one decimal place.)

Iwill give brainliest if you answer right : )

Ahuge (essentially infinite) horizontal nonconducting sheet 10.0 cm thick has charge uniformly spread over both faces. the upper face carries +95.0 nc/m2 while the lower face carries -25.0 nc/ m2. what is the magnitude of the electric field at a point within the sheet 2.00 cm below the upper face? (ε0 = 8.85 × 10-12 c2/n · m2)