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Ilya [14]
3 years ago
7

Sally takes two bar magnets and randomly tapes one end of each bar magnet. she labels the magnets A and B. She brings the taped

ends of two magnets together and they attract each other. Sally knows that opposite poles of magnets attract. She then brings the taped end of a third magnet (Magnet C) near each of the first two magnets. Predict her observations.
Physics
1 answer:
Artyom0805 [142]3 years ago
4 0
I already answered this quesiton. The fact is that there are only two kind of poles and since the two taped poles of the magnets labeled A and B attracts one to each other, we know that the two taped poles of the first two magnets are oppsosite.

Then, the taped pole of the third magnet has to be equal to one of the first two taped poles and opposite to the other of the first two taped poles.

That drives you to conclude (predict)  that when she brings the taped end of the third magnet (magnet C) near each of the first two magntes, in one case they will attract each other and in the other case they will repele mutually.

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The cost of boiling 500 cm³ of water using the 3 KW Kettle is 1.35p

<h3>What is power? </h3>

This is defined as the rate in which energy is consumed. Electrical power is expressed mathematically as:

Power (P) = Energy (E) / time (t)

P = E / t

<h3>How to determine the energy</h3>
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E = Pt

E = 3 × 0.05

E = 0.15 KWh

<h3>How to determine the cost</h3>
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Cost = Energy × cost per unit

Cost = 0.15 × 9

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8 0
2 years ago
A 62.00-cm guitar string under a tension of 70.000 N has a mass per unit length of 0.10000 g/cm. What is the highest resonant fr
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Answer:

17,947.02 Hz

Explanation:

length (L) = 62 cm = 0.62 m

tension (T) = 70 N

mass per unit length (μ) = 0.10000 g/cm = 0.010000 kg/m

maximum frequency = 18,000 Hz

f = \frac{n}{2L} x \sqrt{\frac{T}{μ}}

f = \frac{n}{2 x 0.62} x \sqrt{\frac{70}{0.01} }

f = n x 67.47

18,000 = n x 67.47

n = 266.8≈ 266

the 267th overtone is the highest overtone that can be heard by this person, and its frequency would be 26 x 67.47 = 17,947.02 Hz

8 0
3 years ago
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Answer:

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A car is built from various subsystems. If these subsystems are not working properly it is dangerous because it can cause a serious traffic accident.

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When you're testing the build of a car, you have to check its many subsystems:

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The subsystems of a car are very important components that allow the proper functioning of the car. These subsystems work synchronously making the car work properly.

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2 years ago
Does wax paper, aluminum foil, or plastic wrap cause more friction
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Yes i does. they cause more friction <span />
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