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dimulka [17.4K]
2 years ago
8

How is the mass of air in a hot air balloon affected when it is floating?

Physics
1 answer:
Bad White [126]2 years ago
3 0
<h2>sueunxicnrjcnexjsexmjemvjsmzj</h2>
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Explain what happens to a light wave that hits the surface of a pool.
brilliants [131]

A light wave that hits the surface of a pool gets refracted and gives us an apparent image of the surface of the pool, following the concepts of refraction.

<u>Explanation:</u>

Let’s recall the concept of refraction when a light wave passes from medium of rarer to denser. There is a change in the speed of light while travelling from medium of rarer to denser.

There can be a change in the direction as well. This property is known as “Refraction” and the best example to see refraction is watching the surface of a clean pond, lake or pool.

When the light travels from a rarer medium (air) to a denser medium (water), it changes its angle of direction and gets refracted and hit to our eye lenses. With this, we see the surface of the pool at a changed angle and it seems to be a bit shallow than its original depth.

5 0
3 years ago
An experiment to measure the speed of light uses an apparatus similar to Fizeau's. The distance between the light source and the
Marina86 [1]

Answer:

2.88*10^{8} m/s

Explanation:

The speed of light is given by

c=\frac {2d}{t} and t=\frac {\theta}{\omega} hence

c=\omega\frac {2d}{\theta}

Speed of light is given by

c=900\times 2\pi(\frac {2\times 10}{\frac {2\pi}{2*800}}})=2.88*10^{8} m/s

4 0
3 years ago
Which statements describe density? Check all that apply.
HACTEHA [7]

Density is a chemical property of an object.

The density of an object is constant.

Density is a derived unit of measure

7 0
2 years ago
Read 2 more answers
Calculate the magnitude of the maximum orbital angular momentum Lmax for an electron in a hydrogen atom for states with a princi
erica [24]

Answer:

L_max= 0

Explanation:

The formula for magnitude of maximum orbital angular momentum is given by

L_{max}= \sqrt{l(l+1)\bar{h}}

l= orbital quantum number

l= n-1

n= shell number or principal quantum number

for n=1 , l=0

therefore, L_{max}= \sqrt{0(0+1)\bar{h}}

L_max= 0

3 0
3 years ago
What is the meaning of life? why are we here? what is the goal
DIA [1.3K]

Answer:

you are the one who gives meaning to your life, do what u want to do. try new things and just enjoy the good things that you alreadyknow u like. you shouldn't look at life as a competition or as a task that needs something to be done, just do whatever u want

7 0
2 years ago
Read 2 more answers
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