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3 years ago

Which of the following could be the source of resistance in a household electric circuit?

Physics

2 answers:

Tpy6a [65]3 years ago

8 0

D. all of these

all of these use electricity

Hope I helped!

exis [7]3 years ago

7 0

The answer in d (all of these)

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lana [24]

Answer:

the work done by the 30N force is 4156.92 J.

For this problem, they don´t ask you to determine the work of the total force applied in the block. They only want the work done for the force of 30N, with an angle of 30º respectively of the displacement and a traveled distance of 160m. So:

W=F·s·cos(α)=30N·160m·cos(30º)=4156.92J

8 0

3 years ago

A technician wishes to determine the wavelength of the light in a laser beam. To do so, she directs the beam toward a partition

Nana76 [90]

Answer:

λ = 5.656 x 10⁻⁷ m = 565.6 nm

Explanation:

Using the formula of fringe spacing from the Young's Double Slit experiment, which is given as follows:

$\Delta x = \frac{\lambda L}{d}\\\\\lambda = \frac{\Delta x\ d}{L}$

where,

λ = wavelength = ?

Δx = fringe spacing = 1.6 cm = 0.016 m

L = Distance between slits and screen = 4.95 m

d = slit separation = 0.175 mm = 0.000175 m

Therefore,

$\lambda = \frac{(0.016\ m)(0.000175\ m)}{4.95\ m}\\\\$

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3 years ago

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Scilla [17]

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3 years ago

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sdas [7]

I believe there are two correct answers, and those answers are A and D

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sineoko [7]

Plaque is the reasoning for this question ;)

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3 years ago

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