Physics, 29.08.2019 05:20 sierrastrickland99
The speed of sound in air is ~331 m/s. during the next thunderstorm, try to estimate your distance from a lightning bolt by measuring the time lag between the flash and the thunderclap. you can ignore the time for the light flash to reach you. why?
Answers: 1
Physics, 21.06.2019 17:40, duncanje5783
Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars
Answers: 2
Physics, 22.06.2019 18:30, leslylinares454
Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.
Answers: 1
Physics, 22.06.2019 18:50, rurbanok12
8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.
Answers: 3
The speed of sound in air is ~331 m/s. during the next thunderstorm, try to estimate your distance f...
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