Physics, 20.08.2019 18:10 johnsonwhitney2
At what distance will a 45 w lightbulb have the same apparent brightness as a 130 w bulb viewed from a distance of 35 m ? (assume that both bulbs convert electrical power to light with the same efficiency, and radiate light uniformly in all directions.)
Answers: 1
Physics, 21.06.2019 19:30, Fangflora3
11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?
Answers: 1
Physics, 21.06.2019 20:30, blessingjessica
Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of 93 m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 15.5 kw from the compressor to its surroundings. assuming the ideal gas model for air neglecting kinetic potential energy effects, determine the power in put in kw.
Answers: 2
Physics, 22.06.2019 12:00, connorhanratty6487
In an experiment, how can i change human errors? be specific.
Answers: 1
Physics, 22.06.2019 18:00, fletcherjf3
Efficiency is the ratio of to for a system a)power in to power in b)power in to power out c) power out to power out d) power out to power in
Answers: 2
At what distance will a 45 w lightbulb have the same apparent brightness as a 130 w bulb viewed from...
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