Physics, 05.02.2020 11:49 LizzieS8167
Unit cell dimensions for polyethylene may be assumed to be as follows: a-0.741 nm, b=0.496 nm, c=0.254 nm, a=ß=y= 90° the wavelength of cuk radiation is 0.1542 nm. 17.1 a flat-plate x-ray diffraction pattern was obtained from an unoriented sample of polyethyl- ene using cukk, radiation. it consisted of three rings of radius 22.2, 36.6 and 19.7 mm. the specimen-to-film distance was 50 mm. calculate the d-spacing of the planes giving rise to these reflections. it is thought that these reflections are from (hk0) type planes. draw a scale diagram of the unit cell of polyethylene projected along the c-axis. measure the spacing of the low-index (hk0) type planes and hence identify the planes giving rise to the observed reflections
Answers: 3
Physics, 23.06.2019 01:30
Imagine that the rightward current flows in the rod for a short time. as a result, what will the net charge on the right and left ends of the rod become? left end negative and right end positive left end negative and right end negative left end negative and right end nearly neutral left end nearly neutral and right end positive both ends nearly neutral
Answers: 3
Physics, 23.06.2019 05:00
What about a rubber band, can it change its shape? is it a solid?
Answers: 2
Physics, 23.06.2019 07:00
Auniform brick of length 25 m is placed overthe edge of a horizontal surface with a maximum overhang of 12.5 m attained withouttipping. now two identical uniform bricks of length25 m are stacked over the edge of a horizontalsurface. what maximum overhang is possible forthe two bricks (without tipping)? answer in units of m.
Answers: 2
Physics, 23.06.2019 07:30
Why would an orange roll of your cafeteria tray if you stopped suddenly
Answers: 1
Unit cell dimensions for polyethylene may be assumed to be as follows: a-0.741 nm, b=0.496 nm, c=0....
Mathematics, 04.01.2021 21:00
Health, 04.01.2021 21:00
History, 04.01.2021 21:00
English, 04.01.2021 21:00
Mathematics, 04.01.2021 21:00
English, 04.01.2021 21:00
History, 04.01.2021 21:00
Medicine, 04.01.2021 21:00
English, 04.01.2021 21:00
Mathematics, 04.01.2021 21:00
History, 04.01.2021 21:00
Mathematics, 04.01.2021 21:00
Mathematics, 04.01.2021 21:00