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fredd [130]
3 years ago
14

HELP ASAP. WILL GIVE BRAINLIEST.

Physics
1 answer:
chubhunter [2.5K]3 years ago
3 0

The fastest thing in the whole universe is the speed of light in a vacuum. The speed is around 2.99 * 10^{8} . It is fastest in vacuum as vacuum does not contain any dust particles and is a hollow space so light travels faster. It also has a refractive index of 1 so it travels faster.

After vacuum light travels faster in air. Air has a refractive index of 1.0003.

After air, it travels faster in water. The speed is about 3/4 of its speed in a vacuum, or 225,000,000 meters per second. Speed slows in water because photons interact with atoms, which repeatedly absorb and re-emit them to the same direction. The refractive index of water is 1.33.

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The equivalent resistance of two resistors connected in series is always greater than the equivalent resistance of the same two
seraphim [82]

Answer:

True

Explanation:

Because the resistors in series is the sum of the two resistors given as

R= R1+R2

While that of resistors in parallel is the sum of the reciprocal of the resistance given as

1/R = 1/ R1+ 1/R2

So that of series connection will be greater

4 0
3 years ago
A flask containing argon gas is connected to an closed-ended mercury manometer. The closed end is under vacuum. If the mercury l
iogann1982 [59]

Answer:

230 torr

Explanation:

Given that

P = 230 mm of Hg

If argon gas and mercury is in equilibrium position then the pressure on the both side will be same .

As we know that

1 torr = 1 mm of Hg

So the pressure of the argon will be 230 torr .

Unit conversion

1 torr = 1 mm of Hg

1 bar = 100 KPa = 10⁵ Pa =  10⁵ N/m² = 0.1 MPa = 0.1 x 10⁶ Pa

5 0
3 years ago
What is the circle of least confusion?
Artist 52 [7]

Answer and Explanation:

In optics, a CoC(Circle of Confusion) is defined the minimum cross section of a paraxial bundle of rays made by a lens which is sphero-cylindrical type and can be viewed as an optical spot, which do not converge perfectly at the focus  while a point source is being imaged due to spherical aberration.

The Circle of Confusion is also referred to as circle of indistinctness or a blur spot

5 0
4 years ago
True or False: The tundra and taiga are known as cold biomes.
dmitriy555 [2]
The taiga biome is a forest biome it has wet summers and long cold winters. The tundra, yes is considered a cold biome. But I do not think the taiga biome is a cold biome since it is a forestial biome. Also many plants grow in a taiga biome specifically Boreal and Coniferous forest plants. I believe it is false.
5 0
4 years ago
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A wire that is 0.86 meters long is moved perpendicularly through a constant magnetic field of strength 0.035 newtons/amp·meter a
avanturin [10]
<span>The answer to your question is choice: D</span>
8 0
3 years ago
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