Hi all. Here I will post a few questions on physics and light. If anyone can help me and has time to explain how they get the answers, let me know 1. Yellow light has a wavelength of 575 nm (nanometers). What is its approximate frequency? A. 5 x 10^12 Hz B. 2 x 10^14 Hz C. 5 x 10^14 Hz D. 5 x 10^15 Hz 2. If a blackbody is heated to a temperature T (in degrees Kelvin, K, where K = âˆ˜C + 273), the wavelength where it appears brightest (the peak of the blackbody curve) occurs at a wavelength, Î»peak (in METERS), given by Wien's Law: Î»peak x T = 0.0029 From Wien's Law above, at what wavelength, Î»peak, does a chair at room temperature (T=290 K) look brightest? A. 10 meters B. 10^-3 meters C. 10^-4 meters D. 10^-5 meters 3. Referring to your answer from Question 2 (the Wien's Law problem), what is the corresponding frequency of that radiation? A. 3x10^13 Hz B. 4x10^13 Hz C. 5x10^14 Hz D. 5x10^15 Hz 4. Referring once again to the Wien's law question 2, in what part of the radiation spectrum does the peak radiation occur? A. Visible B. Infrared C. Ultraviolet D. X-rays **Any help would be appreciate it. I think I know some of the answers, but I am trying to double check. Thanks in advance.