3 years ago

In which ancient civilization did the sport of cucj originate

Physics

1 answer:

Burka [1]3 years ago

3 0

It originated in China.

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Which of the following is not a characteristic of electromagnetic waves? (A) They can travel at various speeds through any one m

MaRussiya [10]

B. C, and D are true. A isn't.

In any given material, EM waves have a single speed. It's

(the speed of light in vacuum)
divided by
(the index of refraction of that material).

6 0

3 years ago

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If you whirl a tin can on the end of a string and the string suddenly breaks, in what direction will the can go?

Contact [7]

Answer:

fly off, tangent to its circular path.

Explanation:

4 0

3 years ago

Can someone explain it with steps?

Anton [14]

Answer:

Option C is the correct answer

Explanation:

Distance travelled by car during reaction time

$=15\times0.4\\\\=6m$

The car stopped before hitting the animal by $1 m$

Distance travelled during deceleration is $21-6-1=14m$

Hence by $v^2=u^2+2as$

We have

$0^2=15^2+2 \cdot a \cdot 14\\\\a=\frac{-225}{28} \\\\=-8.03m/s^2$

Option C is the correct answer

5 0

3 years ago

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When two waves collide and create a taller wave, what interference occurs?

oksano4ka [1.4K]

It would be Constructive interference. It occurs when two waves collide and make a taller wave.

3 0

3 years ago

You drive a car 640 m to the east, then 340 m to the north what is the magnitude of your displacement

mixer [17]

Magnitude of displacement = $\sqrt{640^2 + 340^2}$

Adding the squares gives displacement = $\sqrt{525,200}$

Displacement = $\sqrt{525,200}$ ≈ 724.7m

6 0

3 years ago