4 years ago

Which sentence is true about Polaris and the Sun?

Physics

2 answers:

Blababa [14]4 years ago

5 0

Answer:

Answer is B Polaris seems smaller than the Sun because it is farther away.

Explanation:

i took the test trust me this is the answer.

Andrei [34K]4 years ago

3 0

Its B polaris seems smaller than the Sun

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A 45.5-turn circular coil of radius 4.85 cm can be oriented in any direction in a uniform magnetic field having a magnitude of 0

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Answer:

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Explanation:

The maximum Torque on a coil is given as,

τ = BNIA...................... Equation 1

Where τ = Maximum torque exerted on the coil, B = Magnetic Field, N = Number of turns, I = Current, A = Area.

Given: N = 45.5 Turns, B = 0.49 T, I = 26.7 mA = 0.0267 A,

A = πr², Where r = radius of the coil, r= 4.85 cm = 0.0485 m

A = 3.14(0.0485)²

A = 7.39×10⁻³ m².

Substitute into equation 1

τ = 45.5×0.49×26.7×7.39×10⁻³

τ = 4.399 Nm

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