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Dimas [21]
3 years ago
8

Which one of the following is not a fundamental physical quantity??! A. Temperature b. Current c. Area d. Mass​

Physics
1 answer:
Hatshy [7]3 years ago
3 0

Answer:

Out of this, Area is not a fundamental physical quantity.

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Trình bày về Thí nghiệm tán xạ Rutherford, phát hiện proton.
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a man hits a gold ball (0.205kg) which accelerates at a rate of 20.0 m/s squared. what is the amount of force acted on the ball
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<h2>4.1 N</h2>

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A Hall probe, consisting of a rectangular slab of current-carrying material, is calibrated by placing it in a known magnetic fie
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Answer:

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Hall emf, V_{Hall} = 20\ mV = 0.02\ V

Magnetic Field, B = 0.10 T

Hall emf, V'_{Hall} = 69\ mV = 0.069\ V

Now,

Drift velocity, v_{d} = \frac{V_{Hall}}{B}

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Now, the expression for the electric field is given by:

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B = \frac{V_{Hall}}{v_{d}sin\theta}                      (2)

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B = \frac{0.069}{0.2\times sin60} = 0.398\ T

5 0
3 years ago
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