![subject](/tpl/images/cats/User.png)
Engineering, 28.01.2020 23:41 BluSeaa
Lead screens for the protection of personnel in x-ray diffraction laboratories are usually at least 1 mm thick.
calculate the "transmission factor" (itrans./incident) of such a screen for cu kα, mo kα, and the shortest wavelength radiation from a tube operated at 30,000 volts.
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Engineering
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2
Answers: 3
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:20
Most leaks in reciprocating air compressors can be detected and minimized by: (clo4) a)-detecting leakage areas using ultrasonic acoustic detector. b)-tightening joints and connections c)-replacing faulty equipment d)-all of the given options
Answers: 2
You know the right answer?
Lead screens for the protection of personnel in x-ray diffraction laboratories are usually at least...
Questions
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 04.08.2021 19:00
![question](/tpl/images/cats/istoriya.png)
History, 04.08.2021 19:00
![question](/tpl/images/cats/mat.png)
Mathematics, 04.08.2021 19:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mkx.png)
Arts, 04.08.2021 19:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 04.08.2021 19:00
![question](/tpl/images/cats/fr.png)
French, 04.08.2021 19:00
![question](/tpl/images/cats/mir.png)
World Languages, 04.08.2021 19:00
![question](/tpl/images/cats/geografiya.png)
Geography, 04.08.2021 19:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 04.08.2021 19:00
![question](/tpl/images/cats/istoriya.png)
History, 04.08.2021 19:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)