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Gelneren [198K]
3 years ago
11

Which of the following could be used to create an open circuit?

Physics
1 answer:
Arturiano [62]3 years ago
4 0
A switch
What are the answers choices
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What do physicist use to help us understand how things move and work?
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3 years ago
What happens when a light ray is parallel to the principal axis ?
Phantasy [73]

Answer:

Any incident ray traveling parallel to the principal axis of a converging lens will refract through the lens and travel through the focal point on the opposite side of the lens. ... These rays of light will refract when they enter the lens and refract when they leave the lens.

Hope this helps...

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Select the correct answer.
Effectus [21]
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2 years ago
A 4 kW vacuum cleaner is powered by an electric motor whose efficiency is 90%. (Note that the electric motor delivers 4 W of net
RoseWind [281]

Answer:3.6\ kW

Explanation:

Given

Power Supplied [tex]P_{input}=4\ kW[/tex]

Efficiency of the motor \neta =90\%

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\Rightarrow 0.9=\dfrac{P_{out}}{4}

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So, vacuum cleaner delivers a power of 3.6\ kW

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3 years ago
Methods to reduce the frictional force between the an object and surface which it is in contact.
telo118 [61]
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