Physics, 25.06.2019 06:30 gracedaniels68
Adental x-ray typically affects 214 g of tissue and delivers about 3.8 μj of energy using x-rays that have wavelengths of 0.026 nm. what is the energy ephoton, in electron volts, of x-ray photons? how many photons are absorbed during the dental x-ray? assume the body absorbs all of the incident x-rays.
Answers: 2
Physics, 22.06.2019 07:50
Calculate the ratio of h+ ions to oh– ions at a ph = 6. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 6. are they the same? why or why not? record your explanation in table a. what is the concentration of h+ ions at a ph = 6? mol/l what is the concentration of oh– ions at a ph = 6? mol/l what is the ratio of h+ ions to oh– ions at a ph = 6? : 1
Answers: 1
Physics, 22.06.2019 10:20
Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)
Answers: 2
Physics, 22.06.2019 11:30
If forces acting on an object are unbalanced. true or false
Answers: 1
Physics, 22.06.2019 17:30
You can watch static electricity in action by rubbing an inflated balloon against your hair. your hair will actually stand on its end! it does this because each hair becomes charged, and they all repel one another.
Answers: 3
Adental x-ray typically affects 214 g of tissue and delivers about 3.8 μj of energy using x-rays tha...
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