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adell [148]
3 years ago
11

Which of the following values represents an index of refraction of an actual material?

Physics
1 answer:
Airida [17]3 years ago
3 0

The answer is <em>B. 5/4</em> or <em>1.25</em>

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A long solenoid of radius 3 cm has 1100 turns per meter. If the solenoid carries a current of 1.5 A, then calculate the magnetic
Arada [10]

Answer:

The magnetic field at the center of the solenoid is 2.1  × 10⁻³ T

Explanation:

The magnetic field B at the center of the solenoid is given by

B = μ₀ni where μ₀ = permeability of free space = 4π × 10⁻⁷H/m, n = number of turns per unit length of the solenoid = 1100 turns per meter and i = current in the solenoid = 1.5 A.

So B = μ₀ni

= 4π × 10⁻⁷H/m × 1100 × 1.5 A

= 4π × 10⁻⁷H/m × 1650 A-turns/m

= 20734.5 × 10⁻⁷T  

= 2.07345 × 10⁻³ T

≅ 2.1  × 10⁻³ T

So the magnetic field at the center of the solenoid is 2.1  × 10⁻³ T

3 0
3 years ago
Do you think that the universe has a starting point and ending point? explain.
Eddi Din [679]

Answer:

No

Explanation:

I don't think the universe has a starting and ending point because the universe is vast and has not been fully discovered. I think that the universe is endless because all of the stars, planets, and galaxy's have yet to be found and the end or start of the universe is also yet to be discovered so I think that the universe could go on forever.

3 0
2 years ago
A jet’s original velocity is 600 m/s. After 20 seconds accelerating at 8 m/s 2 , how
scoray [572]

Answer:

<h2>760 m/s</h2>

Explanation:

The jet's speed or final velocity can be found by using the formula

<h3>v = u + at</h3>

where

v is the final velocity

u is the initial velocity

t is the time taken

a is the acceleration

From the question we have

v = 600 + 20(8)

= 600 + 160

We have the final answer as

<h3>760 m/s</h3>

Hope this helps you

3 0
2 years ago
Suppose earth did not rotate.How would conditions and life on earth be different
ki77a [65]
If the earth did not rotate, one half of the earth would be dark and the other side of the Earth would be light. The bright side would be too hot and the other side would be too cold. Also if the Earth did not rotate, then the two poles and the equator would be easily effected.
3 0
2 years ago
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The amount of oxygen in the reactants is 4 atoms. In the products, the oxygen is distributed to water (H2O) and O2 gas. Which co
ASHA 777 [7]

D. 2 in front of water and 1 in front of oxygen


8 0
3 years ago
Read 2 more answers
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