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3 years ago

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For a research project, a student needs a solenoid that produces an interior magnetic field of 0.0300 T. She decides to use a cu

rrent of 1.00 A and a wire 0.500 mm in diameter. She winds the solenoid in layers on an insulating form 1.00 cm in diameter and 10.0 cm long. Determine the number of layers of wire needed. (Round your answer up to the nearest integer.)

1 answer:

Darina [25.2K]3 years ago

3 0

Answer:

121m

Explanation:

Magnetic field = 0.03

Current = 1.00A

Diameter = 0.5

Length = 10vm

B = UoIN/Lcylinder * n

n = number of layer

n = 0.5x10^-3 x 0.03/4pi x 10^-7 x 1

= 0.0005x0.03/12.56x10^-7

= 11.94

~12

Average radius

= 0.008

Length of wire = 2x3.13x0.008x12x200

= 120.6m

= 121m

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Answer:

Please find the answer in the explanation

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3 years ago

The n = 2 to n = 6 transition in the bohr hydrogen atom corresponds to the ________ of a photon with a wavelength of ________ nm

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The energy levels of the hydrogen atom are quantized and their energy is given by the approximated formula
$E=- \frac{13.6}{n^2} [eV]$
where n is the number of the level.

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Since this variation is positive, it means that the system has gained energy, so it must have absorbed a photon.

The energy of photon absorbed is equal to this $\Delta E$ . Converting it into Joule,
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The energy of the photon is
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The photon travels at the speed of light, $c=3 \cdot 10^8 m/s$ , so its wavelength is
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4 years ago

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4 years ago

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oksano4ka [1.4K]

Answer:

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now plug in the values in above equation

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now we have

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3 years ago

a net force of 1,800 N is applied to a boat causing it to accelerate at 1.5 m/s^2. what is the mass of the boat?

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Answer:

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4 years ago