Engineering, 07.10.2019 18:00 trenton16
An alpha particle (α), which is the same as a helium-4 nucleus, is momentarily at rest in a region of space occupied by an electric field. the particle then begins to move. find the speed of the alpha particle after it has moved through a potential difference of −3.45×10−3 v .the charge and the mass of an alpha particle are qα = 3.20×10−19 c and mα = 6.68×10−27 kg , respectively.
mechanical energy is conserved in the presence of which of the following types of forces? (select all that apply.)
(a) electrostatic
(b) frictional
(c) magnetic
(d) gravitational
Answers: 2
Another question on Engineering
Engineering, 04.07.2019 18:10
An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet
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
Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)
Answers: 1
You know the right answer?
An alpha particle (α), which is the same as a helium-4 nucleus, is momentarily at rest in a region o...
Questions
Mathematics, 24.09.2020 02:01
Mathematics, 24.09.2020 02:01
History, 24.09.2020 02:01
Mathematics, 24.09.2020 02:01
Medicine, 24.09.2020 02:01
Mathematics, 24.09.2020 02:01
Chemistry, 24.09.2020 02:01
History, 24.09.2020 02:01
