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3 years ago

If you put a pencil in a cup of water, it looks as if it is broken and larger in the water. This is because light waves

Physics

2 answers:

Aleks04 [339]3 years ago

7 0

c. bend when passing from air to water.

Anni [7]3 years ago

4 0

The light waves bend as it travels from the air into the water.

This phenomenon is called refraction of light waves.

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Which scientist's work led to our understanding of how planets move around

Nataly [62]

Answer:

<h2><em><u>Johannes Kepler</u></em></h2>

Explanation:

He made rules about planetary motion.
The scientist Johannes Kepler was a German astronomer.
He found out that the planets evolved around the Sun.
He also made the laws of planetary motion.

Hope this helped,

Kavitha

3 0

3 years ago

Read 2 more answers

involves removing the top layer of earth, mining the coal, and then replacing the earth back on the surface.

noname [10]

What is strip mining?

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3 years ago

A satellite moves in a circular orbit a distance of 1.6×10^5 m above Earth's surface. (radius of Earth is 6.38 x 10^6m and its m

Rashid [163]

Answer:

The speed of the satellite is 7809.52 m/s

Explanation:

It is given that,

Radius of Earth, $r=6.38\times 10^6\ m$

Mass of earth, $M=5.98\times 10^{24}\ kg$

A satellite moves in a circular orbit a distance of, $d=1.6\times 10^5\ m$ above Earth's surface.

We need to find the speed of the satellite. It is given by :

$v=\sqrt{\dfrac{GM}{R}}$

R = r + d

$R=(6.38\times 10^6\ m+1.6\times 10^5\ m)=6540000\ m$

So, $v=\sqrt{\dfrac{6.67\times 10^{-11}\ Nm^2/kg^2\times 5.98\times 10^{24}\ kg}{6540000\ m}}$

v = 7809.52 m/s

So, the speed of the satellite is 7809.52 m/s. Hence, this is the required solution.

5 0

3 years ago

What is An invention created for fun called ?

Fantom [35]

Answer & Explanation:

A provisional patent application, also called a PPA, shows your invention as being in the process of getting a patent. This means that you will be safe from others copying your idea while your patent application is still being processed.

4 0

3 years ago

Two bodies of mass m₁ & m₂ are moving with the same velocity 'v' K.E. will be greater for??

boyakko [2]

Answer:

the one with a higher mass

Explanation:

The body with more mass will have the greater kinetic energy of the two.

Kinetic energy is the energy due to the motion of body. It is mathematically expressed as:

K.E = $\frac{1}{2}$ m v²

m is the mass

v is the velocity

Since the velocity of the two bodies are the same, and mass is directly proportional to kinetic energy, the body with more mass will have a higher kinetic energy.

So between mass m1 and mass m2, the one with a greater mass will have a higher kinetic energy

8 0

3 years ago