Physics, 22.05.2020 01:02, youngchapo813p8d9u1
If wavelength of K alpha X rays from copper is 1.337×10-10 m energy difference between 2 levels from which they transition is:
A.90.3keV
B.9.03keV
C.8.03keV
Answers: 2
Physics, 21.06.2019 18:20, gordwindisney3747
What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black
Answers: 1
Physics, 21.06.2019 22:50, peno211
Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.
Answers: 2
If wavelength of K alpha X rays from copper is 1.337×10-10 m energy difference between 2 levels from...
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