3. Show that an n = 9 nodal line is impossible if light of wavelength 740 nm passes through a double slit with a separation of 6.2 x 10-6 m |

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Pls help ASAP

Find the integral expression for the magnetic force on a wire carrying 3.5 amps current on the z axis with length2 meters on end at the origin and the other at z=4. Magnetic field is B = 4(zy+4) i - (z-3) j + 20(x+2)/(z-3) k.Don’t take the integral. Integral should contain only x-y-z as variables not r

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9. Light of wavelength 442 nm is sent through a single slit with a width of 884 nm. At what angle does the first dark fringe occur? a. 30.0° b. 45.0° C. 60.0° d. 90.0° 10. Light travels through a single-slit and forms an interference pattern. The spacing of the dark fringes on one side of the pattern is 1.44 cm. What is the width of the central maximum? a. 0.720 cm 1.44 cm b. C. 2.88 cm d. 4.32 cm

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d. when the index of refraction of medium A is equal to the index of refraction of medium B 7. What is the term for the bending of a wave front as it passes an obstacle? a. interference b. reflection C. d. diffraction refraction 8. A ray of light travels from air into a soap film on a layer of glass, as shown right. Which statement about ray 1 is true? a. There is no inversion at either surface. b. There is an inversion the surface between air and soap, but not soap and glass. C. There is no inversion at the surface between air and soap, incident light ray 1 ray 2 ray 3 but there is one at the surface between soap and glass. d. There is an inversion at both surfaces. air = nair 1.00 soap film nfilm = 1.35 glass = nglass 1.50

A circular wire with radius 0.4 meters in on x-y plane. There is a constant Magnetic field with 14T strengthtowards z-axis. Find the magnitude of the electromotive force and the direction of the current for a) B decreasesto 10T in 5 seconds. B) B is rotated by 45 degrees and the area doubles in 4 seconds.