Physics, 20.01.2020 20:31 carolinerosewillis
An individual white led (light-emitting diode) has an efficiency of 20% and uses 1.0 w of electric power. a. how many leds must be combined into one light source to give a total of 1.6 w of visible-light output (comparable to the light output of a 40 w incandescent bulb)? b. what total power is necessary to run this led light source?
Answers: 2
Physics, 22.06.2019 11:40
Consider the following position function. find (a) the velocity and the speed of the object and (b) the acceleration of the object. bold r left parenthesis t right parenthesisr(t)equals=left angle 6 t superscript 4 baseline comma 2 t cubed right angle6t4,2t3 for tgreater than or equals≥0
Answers: 3
Physics, 22.06.2019 12:30
Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?
Answers: 1
Physics, 22.06.2019 16:30
3. a lunar exploration vehicle was created by a research team. it weighs 3,000 kg on the earth. it needs an acceleration of 10 m/s2 on the moon. in order to have the same acceleration, what will be the net force acting on the vehicle on the earth?
Answers: 2
An individual white led (light-emitting diode) has an efficiency of 20% and uses 1.0 w of electric p...
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