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prohojiy [21]
3 years ago
12

When did the object have the highest average

Physics
1 answer:
miv72 [106K]3 years ago
7 0

Answer:

Between 120 and 180 seconds

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Suppose a ray of light traveling in a material with an index of refraction na reaches an interface with a material having an ind
ivolga24 [154]

Answer: Option (b) is the correct answer.

Explanation:

It is known that when a ray of light tends to travel from a denser to rarer medium then there occurs total internal reflection.

For a denser medium the refractive index is greater than that of a rarer medium. This means that for the given situation refractive index of medium n_{a} is greater than medium n_{b}.

this also means that incident angle must be greater than the critical angle of the medium.

Thus, we can conclude that the statement n_{a} > n_{b} must be true for total internal reflection to occur.

5 0
3 years ago
Select all of the answers that apply.
postnew [5]
Here are the answers to the given question above.
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3 0
3 years ago
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You are to drive to an interview in another town, at a distance of 310 km on an expressway. The interview is at 11:15 a.m. You p
Sloan [31]

Answer:

Explanation:

Time to cover first 100 km = 1 hour.

time remaining = 3.15 - 1 = 2.15 hour .

Time to cover next 42 km = 1 hour .

Time remaining = 2.15-1 = 1.15 hour.

Distance to be covered = 310 - 142

= 168 km

least speed needed = distance remaining / time remaining

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= 146.08 km / h .

4 0
3 years ago
When the temperature of ice-cold water is increased slightly, does it undergo a net expansion or net contraction?
miss Akunina [59]

From the freezing temperature up to about 4°C (39°F) the water CONTRACTS.  That is, it becomes MORE dense.  I think I read that water is the ONLY known substance whose solid phase floats in its liquid phase.  That's why the cubes float in your soda and bergs float in the ocean.  And if weren't so, then life on Earth would not be possible !  Oceans and lakes would freeze from the bottom up, ONE TIME, and then never thaw again.

4 0
2 years ago
Why can the atmosphere hold on to heat
Naddika [18.5K]

Answer:

A. Air

Explanation:

4 0
2 years ago
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