Answer this please. thanks in advance!! please tel me a christmas tree lights are set up in series1. a set of lights has 50 bulbs what will be the voltage across each bulb? show your working out.
Answers
Answer 1
Answer:
If 50 identical light bulbs are connected in series across a single power source, then the voltage across each bulb is ( 1/50 ) of the voltage delivered by the power source.
Answer 2
Answer:
Presuming that this tree is connected into a mains power source in the UK. The total output of the UK mains source is 230V. So if we share this voltage equally between 50 bulbs:
I'm not 100 per cent sure this is correct though and different countries may have different mains power supplies. Hope it helps anyway.
EDIT: This also does not take into account resistance in the bulbs and wires but is all I can tell you from the information provided in the question.
A person weighing 500 N climbs on a rope. What is the tension on the rope?
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At the times when the person is not moving up or down, the tension in the rope is 500N. At those moments, the forces on the person consist of 500N downward due to gravity and 500N upward due to the tension in the rope, and with the forces balanced, the person just hangs there and doesn't accelerate up or down.
At the times when the person is actually climbing, that is, hauling himself upward, the tension in the rope must be greater than 500N. At those moments, the net force on the person is upward, and the person's body accelerates upward.
the tension of a person weighing 500 pounds on a rope will make the rope break little by little,untill it gets to the point the rope snaps.
Can someone help me number five idk if im correct
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Gravity is the force that attracts a object to the center of the earth.
yes your correct. :)
Which of the following is not needed to make a model of the water cycle?
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grass.. dirt... land things
Answer:
The answer is a drain
Fifteen joules of heat are added to a cylinder with a piston. The system uses 7 joules of energy to raise the piston upward. By how much did the internal energy of the system increase?
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Answer:
8 J
Explanation:
Heat = work + change in internal energy
Q = W + ΔU
15 J = 7 J + ΔU
ΔU = 8 J
In what way does varying the length of a string of a violin change the vibration and how does this affect the sound that's produced?
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The wavelength is the so-called "fundamental" wavelength, or the "first mode." Thus, the wavelength of the string's vibration is defined by the supports, and has nothing whatsoever to do with mass or elasticity.
When two kinds of pulleys are used together the system is called