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torisob [31]
4 years ago
14

When an electric current flows through a long conductor, each free electron moves

Physics
2 answers:
nirvana33 [79]4 years ago
8 0
<span>When an electric current flows through a long conductor, each free electron moves from one end of the other end. When an electric field is applied to a conductor (a wire) the free electrons of the conductor are subject to an electric force which will cause the electrons to move. Given that the electrons are negatively charged they will move counter-wise the field.. Each end of the wire is attached to one pole or end of a battery (or generator of electricity) then the electrons will move form the end joined to the negative pole toward the end attached to positive pole.</span><span />
pentagon [3]4 years ago
4 0
D) through a relatively short distance.
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Answer

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weight of water melon on earth, W = 40 N

acceleration due to gravity on earth, g = 9.8 m/s²

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 Mass of an object remain same.

  Hence, mass of object at the surface of Lo = 4.08 Kg.

c) Weight at the surface of Lo

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A source at rest emits light of wavelength 500 nm. When it is moving at 0.90c toward an observer, the observer detects light of
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Answer:

The observer detects light of wavelength is 115 nm.

(b) is correct option

Explanation:

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Using Doppler effect

\lambda_{o}=\sqrt{\dfrac{1-\beta}{1+\beta}}\lambda_{s}

Where, \beta=\dfrac{c}{v}

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\lambda_{o}=115\ nm

Hence, The observer detects light of wavelength is 115 nm.

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Explanation:

8 0
4 years ago
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