Physics, 27.03.2020 22:39, kmacho9726
Consider the classic problem with holiday lights, one little bulb goes out and the whole string goes out. First consider a string of 50 lights in series that plugs into a standard 120VAC outlet and consumes 40 Watts of power.
a. What is the current flowing through each bulb?
b. What is the voltage drop across each bulb?
c. If when a lightbulb burns out the resistance of the bulb becomes infinite, what is the current flowing through that bulb? What is the current flowing through the entire circuit?
d. If a bulb breaks open, exposing the two wires inside and they touch together (i. e., on) what would be the current flowing through this "short circuit"?
e. If the bulbs were instead wired in parallel and a bulb broke open and shorted, what would be the current flowing this short circuit?
f. Which configuration is safer, series or parallel? Why?
Answers: 2
Physics, 21.06.2019 16:30, jroy1973
In this experiment, you will use a track, a toy car, and some washers to explore newton’s first two laws of motion. you will make observations and collect data regarding the motion of these objects. in the space below, write a general scientific question that you will answer by doing this experiment.
Answers: 1
Physics, 23.06.2019 02:20, addisonrausch
Aman is trying to drag a small tree that he cut down. if the static coefficient of friction of the tree on the ground is 0.5 and the tree weighs 670 n, what is the minimum amount of horizontal force that the man will need to apply so that the tree will start moving? o a. 465 n o b. 230 n o c. 670 n o d. 335 n
Answers: 2
Physics, 23.06.2019 11:10, leothedrifter
In the “analyzing the problem” step in the problem solving process, one should evaluate the causes, effects, and symptoms of the problem. select the best answer from the choices provided t f
Answers: 3
Consider the classic problem with holiday lights, one little bulb goes out and the whole string goes...
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