Physics, 17.06.2020 22:57 nolangriffin
When dots are placed on a page from a laser printer, they must be close enough so that you do not see the individual dots of ink. To do this, the separation of the dots must be less than Raleigh's criterion. Take the pupil of the eye to be 4.0 mm and the distance from the paper to the eye of 40 cm; find the maximum separation (in cm) of two dots such that they cannot be resolved. (Assume the average wavelength of visible light is 555 nm.) How many dots per inch (dpi) does this correspond to?
Answers: 2
Physics, 22.06.2019 08:30
What properties of a moving object are used in determining the object's energy of motion
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Physics, 22.06.2019 23:30
The diagram shows a wave. the quantity shown is the amplitude. this quantity is directly proportional to which of these other quantities? a) energy b) frequency c) period d) wavelength
Answers: 2
Physics, 23.06.2019 05:30
Oxygen gas enters well-insulated diffuser at 25 lbf/in.2, 420r, with a velocity of 860 ft/s through a flow area of 1.6 in.^2. at the exit, the flow area is 12 times the inlet area, and the velocity is 19 ft/s. the potential energy change from inlet to exit is negligible. assuming ideal gas behavior for the oxygen and steady-state operation of the diffuser, determine the following: (a) the exit temperature, in r(b) the exit pressure, in lbf/in.^2 (c) the mass flow rate, in lb/s
Answers: 3
Physics, 23.06.2019 09:30
According to the second law of thermodynamics, what is true of entropy in all natural systems? a.it will always decrease. b.it will always increase. c.it will always remain the same. d.it is impossible to measure. e.it will always equal zero.
Answers: 1
When dots are placed on a page from a laser printer, they must be close enough so that you do not se...
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