Diffraction of Light: Diffraction Grating

1. A diffraction grating with 2.10E3 slits per centimeter is used to measure the wavelengths emitted by hydrogen gas. At what angles in the first-order spectrum would you expect to find the two violet lines of wavelengths 434 nm and 410 nm? (a) At what angle in the first-order spectrum would you expect to find the first violet line of wavelengths 434 nm? (b) At what angle in the first-order spectrum would you expect to find the second violet line of wavelength 410 nm? 2. What is the longest wavelength that can be observed in the fifth-order (m=5) spectrum using a diffraction grating with 3.60E3 slits per centimeter? (Unit: nm) All answers must have three significant digits unles... click for more

Physics questions involving magnetic field, electron, proton

I got the solution but the problem is I don't know how i can put it in the worksheet. It is really not helping me.. can you please write which answer is for which question and which part? Like question 1 part a. ______ Please show me the diagrams for each question. I am aware that the solution is present, I just don't know where to write it in the worksheet. I don't understand which answer is for which question.

Faraday's Law of Electromagnetic Induction

A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.84 V and a current of 3.7 A are induced in the coil. The wire is the re-formed into a single-turn square coil, which is used in the same magnetic field (again perpendicular to the plane of the coil and with a magnitude changing at the same rate). What emf and current are induced in the square coil? Two answers: EMF in Volts Current in Amperes

Faraday's Law of Electromagnetic Induction 2

A constant magnetic field passes through a single rectangular loop whose dimensions are 0.35 m x 0.55 m. The magnetic field has a magnitude of 2.1 T and is inclined at an angle of 70° with respect to the normal to the plane of the loop. (a) If the magnetic field decreases to zero in a time of 0.52 s, what is the magnitude of the average emf induced in the loop? Answer is in V (b) If the magnetic field remains constant at its initial value of 2.1 T, what is the magnitude of the rate A / t at which the area should change so that the average emf has the same magnitude as in part (a)? Answer is in m^2/s I am completely lost

Magnetic effects of Current: Field, force, induction

1) The figure (*see attachment) shows 11 paths through a region of uniform magnetic field. One path is a straight line; the rest are half circles. The table (*see attachment) gives the masses, charges and speeds of the 11 particles that take these paths through the field in the direction shown. Which path corresponds to which particle in the table? 2) The following table (*see attachment) gives the number of turns per unit length, n, and the current, I, through six ideal solenoids of different radii. You want to combine them concentrically to produce a net magnetic field of zero along the central axis. Can this be done with (a) two of them, (b) three of them, (c) four of them, (d) five of... click for more