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WINSTONCH [101]
3 years ago
5

Can anyone tell me if I'm doing this correctly?I seriously don't understand this.

Physics
1 answer:
Svetlanka [38]3 years ago
8 0
Yeah You are doing it correct
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Refer to the image shown to answer the question.
Lostsunrise [7]
It would be B. Because every angle has to add up to 180 degrees. 180-70 would give you 110
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The speed of light is 3.00 × 108 m/s in the vacuum of space. In a medium with what index of refraction would light travel slowes
Romashka [77]

Index of refraction can be calculated using the following formula:

n=\frac{c}{v}

where c=3 \times 10^8 \frac{m}{s} in a vacuum and "n" is the index of refraction.  So we must calculate our velocity by manipulating the index of refraction formula and isolate v and so:

v=\frac{c}{n}

We could go one by one and calculate the velocity or use logic.  If you divide by a larger number the output will be a smaller number.  Therefore, the answer would be n=1.62 is the slowest.

v=\frac{3 \times 10^8 \frac{m}{s}}{1.62}= 1.85185 \times 10^8 \frac{m}{s}

By that logic when n=1 light would travel the fastest of these four scenarios.  The key thing to understand about these problems is that the speed of light slows down as it goes through a medium, in a vacuum it's 3 x 10^ 8 m/s but as it goes through say air or water light slows down.

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4 years ago
A nonconducting ring of radius 10.0 cm is uniformly charged with a total positive charge 10.0μC. The ring rotates at a constant
maw [93]

The magnitude of the magnetic field on the axis of the ring 5 cm from its center is 143 pT.

The radius of the nonconducting ring is R = 10 cm.

The ring is uniformly charged q = 10 μC.

The angular speed of the ring, ω = 20 rad/s

The ring is x = 5 cm from the center of the ring.

Now,

R = 10 cm = 0.1 m

q = 10.0 μC = 10 × 10⁻⁶ C

x = 5 cm = 0.05 m

The magnetic field on the axis of a current loop is given as:

B = [ μ₀ IR² ] / [4π(x² + R²)^{3/2} ]

Now, I = q / [2π/ω]

So, the magnitude of the magnetic field which is directed away from the center is:

B =  [ μ₀ ωqR² ] / [4π(x² + R²)^{3/2} ]

B = [ μ₀ (200) (10 × 10⁻⁶) (0.1)² ] / [4π((0.05)² + (0.1)²)^{3/2} ]

B = 1.43 × 10⁻¹⁰ T

B = 143 pT

Learn more about the magnetic field here:

brainly.com/question/14411049

#SPJ4

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2 years ago
This U-shaped valley was produced by the action of a
lapo4ka [179]
C is the answer
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Which one of these is not a rock? A. granite B. Shale C. marble D. Diamond
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DIAMONDS are NOT rocks. Diamonds are minerals, rocks are made up of many different fragments of minerals.

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