Electric and Magnetic Waves

A magnetic field has a magnitude of 1.2 10-3 T, and an electric field has a magnitude of 4.7 103 N/C. Both fields point in the same direction. A positive 1.8 µC charge moves at a speed of 3.0 106 m/s in a direction that is perpendicular to both fields. Determine the magnitude of the net force that acts on the charge. Ans ...continues

Charge to Mass Ratio

A charged particle moves through a velocity selector at a constant speed in a straight line. The electric field of the velocity selector is 3.25 103 N/C, while the magnetic field is 0.360 T. When the electric field is turned off, the charged particle travels on a circular path whose radius is 4.20 cm. Find the charge-to-mass ra ...continues

Electrostatics: Electric Force and Electric Field

Use Gauss's Theorem whenever possible: 1. Two point charges, one positive and the other, a negative charge, are separated by a small distance. (a) Determine the ratio q1/q2 ? (b) What are the signs of q1 and q2? (See attachment for all questions)

Wave Optics: Interference and Diffraction

1.A circular diffraction pattern is formed on a faraway screen. (a) By what factor will the width of the central maximum change if the wavelength is doubled? (a) 4 (b) 2 (c) 1 (no change) (d) 1/2 (e) 1/4 (b) By what factor will the area of the central maximum change if the slit ...continues

Optics: Resolving Power

1. The telescope on Mount Palomar has a diameter of 200 inches. Suppose a double star were 8.40 light-years away. Under ideal conditions, what must be the minimum separation of the two stars for their images to be resolved using light of wavelength 550 nm? (Unit: m) All answers must have three significant digits unless other ...continues

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 viol ...continues

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 kno ...continues

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 th ...continues

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 magnitud ...continues

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 pa ...continues