2 years ago

Within which matter does light travels the fastest? Solid liquid or gas

Physics

1 answer:

exis [7]2 years ago

7 0

Answer:

Light travels fastest in gas

Explanation:

Light is likely to hit a molecule and then gets re-emitted, extending the amount of time the light take to get through a certain distance of the medium

Gas > liquid > solid

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Work occurs when

defon

I believe the answer is the second option.

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3 years ago

A hot air balloon is traveling vertically upward at a constant speed of 4.5 m/s. When it is 28 m above the ground, a package is

ella [17]

Answer:

1.97 seconds

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.8 m/s²

$s=ut+\frac{1}{2}at^2\\\Rightarrow 21=4.5t+\frac{1}{2}\times -9.8\times t^2\\\Rightarrow 21=-4.5t-4.9t^2\\\Rightarrow 4.9t^2+4.5t-28=0\\\Rightarrow 49t^2+45t-280=0$

Solving the above equation we get

$t=\frac{-45+\sqrt{45^2-4\cdot \:49\left(-280\right)}}{2\cdot \:49}, \frac{-45-\sqrt{45^2-4\cdot \:49\left(-280\right)}}{2\cdot \:49}\\\Rightarrow t=1.97, -2.89$

So, the time the package was in the air is 1.97 seconds

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2 years ago

what happens to the water after it rains? a. precipitation b. runoff c. condensation user: what do organisms from the ocean use

Vedmedyk [2.9K]

The rain gets evaporated in to water vapor and is returned to the clouds where they go through condensation and then they poud down as rain or A.K.A, Precipitation.

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3 years ago

As computer information technology becomes faster, how does the ability of scientists to collect and organize data change?

irina1246 [14]

Because computers and technology develop and become faster things are going to<span> become substantially easier.</span>

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3 years ago

A heavy boy and a lightweight girl are balanced on a mass-less seesaw. If they both move forward so that they are one-half their

Rom4ik [11]

Answer:

b) Nothing will happen, the sea saw will still be balanced.

Explanation:

b) Nothing will happen, the sea saw will still be balanced.

Reason:-

When two kids are balanced, the sum of torques on the seesaw will be zero.

if each kid, reduces their distances by half, then the torque of each kid will be half and the sum of torque of each on the seesaw will be zero.

Therefore the seesaw is balanced

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3 years ago

Read 2 more answers