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answer in joules and eV
The K characteristic X-ray line for tungsten has a wavelength of 1.84 10-11 m. What is the difference in energy between the two energy levels that give rise to this line? Express in joules and eV
If your body is emitting infrared radiation of wavelength 9.4 X 10(exponent negative 6)m, what is the energy of the released photons?.
When 1.0 kg of coal is burned, about 3.0e7 J of energy is released. If the energy released per 23592U fission is 2.
By OTA: Patrick Ong, MSc
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- Difference in energy levels.doc
How to find the angle of incidence. - A person stands .038 cm in front of a wall that is covered floor to ceiling with a plane mirror. His eyes are .019 cm above the floor. He holds a flashlight between hi feet and manages to point it at the mirror. At what angle of incidence must the light strike the mirror so the light reaches his eyes?
Refraction problem - Light is reflected from a glass coffee table. When the angle of incidence is 56.0°, the reflected light is completely polarized parallel to the surface of the glass. What is the index of refraction of the glass?
Grating - When a grating is used with light that has a wavelength of 621 nm, a third-order maximum is formed at an angle of 18.0°. How many lines per centimeter does this grating have?
answer in lines/cm
Diffraction-Rayleigh criterion - Late one night on a highway, a car speeds by you and fades into the distance. Under these conditions the pupils of your eyes (average refractive index = 1.36) have diameters of about 7.0 mm. The taillights of this car are separated by a distance of 1.4 m and emit red light (wavelength = 660 nm in vacuum). How far away from you is this car when its taillights appea...
answer in nm - A proton is located at a distance of 0.410 m from a point charge of +8.30 µC. The repulsive electric force moves the proton until it is at a distance of 1.56 m from the charge. Suppose that the electric potential energy lost by the system is carried off by a photon that is emitted during the process. What is its wavelength?
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