Chapter 6, Problem 24RQ

Everything radiates electromagnetic energy. Classify the object with its peak ligth emission.An average star (like sun): _____Element of your oven at max:  _______Bright incandescent light bulb: Infrared and_______Hot volcano lava:  ______Human body:  ______Animals:  ______Gamma emission emitted by a radioactive decay: Hard X-Ray and  ______The radiant heat remaining from the Big Bang:  ______Black light:  ______     Options are:        X-ray, Visible light, Infrared, Microwave, Ultraviolet, Radio Wave, Gamma Ray   Please show work! Thank you!!

___________________ is a form of electromagnetic radiation produced by rapidly moving electrons spiraling through magnetic fields.   a. Lagrangian radiation   b. Accretion   c. Ultraviolet radiation   d. Synchrotron radiation   e. Infrared radiation

Determine the energy of a cosmic rays' photon, if its wavelength is 1.24 x 10-14m?  (h = 6.63 x 10-34Js)   Group of answer choices 2.74 x 10-58J 8.22 x 10-48J 5.34 x 10-20J 1.60 x 10-11J

12.  what is the luminosity-distance formula?

The brightest star in the northern hemisphere is Sirius. Its distance from earth is estimated to be 8.7 light years. A light year is the distance light travels in one year. Light travels at a speed of 3.00 x 108 m/s. Calculate the distance from earth to Sirius in miles. (1 mi = 5280 ft)

My answers, (1) L = 1.884955592 x 10^-5 (2) Energy Stored = 2.35619449 x 10^-4 (3) 9.424777961 x 10^-4  I wanna know if my answers are correct, or not.

Why is light is pure energy?

What are cosmic rays primarily composed of?

Is the event horizon of a black hole the actual physical surface of the object?