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2 years ago

5

light traveling through air encounters a second medium which slows the light to 100,000 miles/second. What is the index of the s

econd medium?

2 answers:

IceJOKER [234]2 years ago

6 0

Answer:

300000 hope it is help full

Explanation:

300000

jenyasd209 [6]2 years ago

4 0

Answer 3000

Explanation:
The formula is n= c/v, “n” means index, “c” means speed of light in vacuum and “v” means speed of light in the material

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D. 15,020 J

heat = 45 x 333.7 j = 15016.5j

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3 years ago

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Why is it difficult to move the heavier object than the lighter object on any surface <br>

juin [17]

Answer:

it's is because the heavier the object is the more it will be pulled down by gravity n the lighter the object the lesser the gravity will pull it down

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2 years ago

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A block of mass m=1kg sliding along a rough horizontal surface is traveling at a speed v0=2m/s when it strikes a massless spring

topjm [15]

Here we can use the work energy theorem

$W_f + W_s = K_f - K_i$

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as it come to rest finally

$K_i = \frac{1}{2}mv_i^2$

$K_i = \frac{1}{2}\times 1\times 2^2$

$K_i = 2 J$

now work done by friction force will be given as

$W_f = - F_f \times d = -\mu mg d$

$W_f = - \mu(1)(9.8)(0.10) = - 0.98\mu$

Work done by spring force is given as

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4 years ago

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Masja [62]

Answer:

<h2>66.67 km/hr</h2>

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We have the final answer as

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3 years ago

You watch a distant lady driving nails into her front porch at a regular rate of 1 stroke per second. You hear the sound of the

Igoryamba

Answer:

λ = 1360 m

Explanation:

Given data:

frequency of driving nails is given as 1 stroke per second mean at every 0.25 sec she hit the nails

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v = f × λ

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substituing value to get wavelength of her driving nails

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