The sun emits energy in the form of electromagnetic waves at a rate of 3.9x1026 W. This energy is produced by nuclear reactions deep in the sun's interior. a) Find the intensity of electromagnetic radiation at the surface of the sun (radius r=R=6.96×10°km ). Ignore any scattering of the waves as they move radialy outward from the center of the sun. b) Find the radiation pressure on an absorbing object at the surface of the sun. c) Find the intensity of electromagnetic radiation at =R/2 , in the sun's interior. d) Find the radiation pressure on an absorbing object at =R/2 , in the sun's interior. Attach File Browse Local Files Browse Content Collection

Suppose the magnetic field of an electromagnetic wave is given by B = : (1.3 × 10−¹0) sin(kx – wt) T. (a) What is the average energy density of the magnetic field of this wave? J/m³ (b) What is the average energy density of the electric field? J/m³

16. Review. Model the electromagnetic wave in a microwave oven as a plane traveling wave moving to the left, with an intensity of 25.0 kW/m². An oven contains two cubical con. tainers of small mass, each full of water. One has an edge length of 6.00 cm, and the other, 12.0 cm. Energy falls perpendicularly on one face of each container. The water in the smaller container absorbs 70.0% of the energy that falls on it. The water in the larger container absorbs 91.0%. That is, the fraction 0.300 of the incoming microwave energy passes through a 6.00-cm thickness of water, and the fraction (0.300)(0.300) = 0.090 passes through a 12.0-cm thickness. Assume a negligible amount of energy leaves either container by heat. Find the temperature change of the water in each container over a time interval of 480 s. %3D

The average intensity of sunlight reaching the earth is 1390 W/m2. A charge of 2.6 x 10-6 C is placed in the path of this electromagnetic wave. (a) What is the magnitude of the maximum electric force that the charge experiences? (b) If the charge is moving at a speed of 3.1 x 104 m/s, what is the magnitude of the maximum magnetic force that the charge could experience?