Physics, 24.12.2019 11:31 eichlingkera3
Select the sentences about the physical nature of light that are true. check all that apply. check all that apply. blue light has a wavelength of 750 nm, the longest wavelength of visible light, and red has a wavelength of 500 nm. light is electromagnetic radiation, a type of energy embodied in oscillating electric and magnetic fields. the units of frequency are distance per second. the more closely spaced the waves, that is, the longer the wavelength, the more energy there is. grass appears green because it reflects primarily the wavelength associated with green light and absorbs the others. light in a vacuum travels at 3.00×108mph. electromagnetic radiation can be characterized by wavelength, amplitude, and frequency. the presence of a variety of wavelengths in white light is responsible for the way we perceive colors in objects.
Answers: 1
Physics, 22.06.2019 03:00, natasniebow
Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c
Answers: 2
Physics, 22.06.2019 06:40, animaljamissofab
How does the kinetic energy of a charge change as the charge moves under the effect of an electric field from higher potential to lower potential? a. the kinetic energy increases. b.the kinetic energy decreases. c.the kinetic energy remains the same. d.the kinetic energy is always zero.
Answers: 1
Physics, 22.06.2019 06:40, PerfectMagZ
Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?
Answers: 2
Select the sentences about the physical nature of light that are true. check all that apply. check a...
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