Engineering, 18.02.2020 01:04 naenaekennedybe
A. An electron is moving with a velocity of 2 times 10^6 cm/s. Determine the electron energy in eV, the momentum, and the de Broglie wavelength (in angstroms).
b. The de Broglie wavelength of an electron is 125 angstroms. Determine the electron energy (in eV), the momentum and the velocity.
Answers: 3
Engineering, 04.07.2019 18:10
Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk
Answers: 1
Engineering, 04.07.2019 18:10
Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux
Answers: 3
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
Engineering, 04.07.2019 18:20
Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero
Answers: 2
A. An electron is moving with a velocity of 2 times 10^6 cm/s. Determine the electron energy in eV,...
History, 18.02.2021 23:10
English, 18.02.2021 23:10
Mathematics, 18.02.2021 23:10
Health, 18.02.2021 23:10
Mathematics, 18.02.2021 23:10
Chemistry, 18.02.2021 23:10