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sweet-ann [11.9K]
3 years ago
12

When santos stands in a swimming pool and looks at his feet, his legs appear to be bent. Which is the term for this phenomenon?

Physics
2 answers:
Alex777 [14]3 years ago
8 0
Refraction of light in water
Sveta_85 [38]3 years ago
3 0

Answer:

The answer is Refraction

Explanation:

Refraction is the change in direction and speed that a wave experiences when passing from one medium to another with a different refractive index. It occurs when the light passes from one propagation medium to another with a different optical density, undergoing a change of speed and a change of direction if it does not affect the surface perpendicularly.

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Suppose a wheel with a tire mounted on it is rotating at the constant rate of 3.37 times a second. A tack is stuck in the tire a
zhannawk [14.2K]

Answer:

The tangential speed of the tack is 8.19 m/s.

Explanation:

The wheel rotates 3.37 times a second that means wheel complete 3.37 revolutions in a second. Therefore, the angular speed ω of the wheel is given as follows:

\omega =3.37rev/s \times(\frac{2\pi rad}{1s} )\\\\=21.174rad/s

Use the relation of angular speed with tangential speed to find the tangential speed of the tack.

The tangential speed v of the tack is given by following expression

v = ω r

Here, r is the distance to the tack from axis of rotation.

Substitute 21.174 rad/s for ω, and 0.387 m for r in the above equation to solve for v.

v = 21.174 × 0.387

v = 8.19m/s

Thus, The tangential speed of the tack is 8.19 m/s.

4 0
3 years ago
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Hey can someone send me the answer to this
bagirrra123 [75]

Cars 'A' and 'C' look like they're moving at the same speed.  If their tracks are parallel, then they're also moving with the same velocity.

5 0
3 years ago
How are the electric field lines around a positive charge affected when a second positive charge is near it? The field lines com
timofeeve [1]
The answer would be D hope it helps and sorry if it is wrong.  :)
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3 years ago
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A solution is prepared by dissolving 49.3 g of KBr in enough water to form 473 mL of solution. Calculate the mass % of KBr in th
son4ous [18]

Answer:

9.31%

Explanation:

We are given that

Mass of KBr=49.3 g

Volume of solution=473 mL

Density of solution =1.12g/mL

We have to find the mass% of KBr.

Mass =volume\times density

Using the formula

Mass of solution=1.12\times 473=529.76 g

Mass % of KBr=\frac{mass\;of\;KBr}{Total\;mass\;of\;solution}\times 100

Mass % of KBr=\frac{49.3}{529.76}\times 100

Mass % of KBr=9.31%

Hence, the mass% of KBr=9.31%

7 0
3 years ago
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UkoKoshka [18]

Answer:

The answer is D

Nucleus is neutral

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