Recent content by Sabrina_18

Homework Statement An coil has 4000 turns of wire and a mean area of cross-section 25cm^2. A magnetic field of flux density 0.16T passes through it. When the magnetic field is reduced steadily to zero in 0.0050s, emf is induced across the terminals of the coil. Calculate the value of this...

Homework Statement 4) The wing of an aircraft is 60m long and the aircraft is traveling at 250ms-1. The vertical component of the Earth’s magnetic field, which the wing is cutting, has the value of 4.3 X 10-5 T. Calculate: a. The Flux cut per second by the wing b. The induced emf set up...

I've tried doing the question and here's an answer for the first wavelength. n = d sin theta/lambda 1800 X 10^-9 X sin 90/450 X 10^-9 = 4 Someone please tell me if its right or wrong Thanks

Diffraction of light and orders equation?? Homework Statement A particular grating has slits of width 600nm and a slit separation of 1800nm. Will there be any missing orders if this is used to observe a line spectrum consisting of 450nm, 600nm and 650nm? Homework Equations I'm not...

Thanks - hope its right!

[SOLVED] Easy question on diffraction of light please help! Homework Statement Wavelengths are; 1 - 520nm Wavelength 2 - 520.8nm Diffraction grating - 400 lines per mm How many orders will the lines be seen in? Homework Equations N = dsin0/lamda The Attempt at a Solution d =...

Thanks for your help. Here is my improved answer: λ = 500nm = 5 X 10ˉ⁷m d = 6 X 10⁵ per metre = 1 ÷ 6 X 10⁵ = 16.7 X 10ˉ⁷m n = 16.7 X 10ˉ⁷ X sin 90 ÷ 5 X 10ˉ⁷ = 3.34 There will be 3 orders of diffraction visible Is this correct? If not please tell me where I am going wrong Thanks

Homework Statement How many orders of diffraction will be visible if light of wavelength 500nm fals on a grating with 600 000 lines per metre? Homework Equations n = dsinѲ / λ The Attempt at a Solution n = 6X10⁵m ÷ 5 X 10ˉ⁷m = 1.2 So 1 order of diffraction will be visible is...