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harina [27]
3 years ago
13

Which of these is an example of interference? A. two lasers pointing away from each other В. two different light waves colliding

and adding together C. a light wave bending around the corner of an obstacle D. a light wave bouncing off of a flat surface​
Physics
1 answer:
iren2701 [21]3 years ago
6 0

Answer:

I believe the answer is B. Although it might be C.

Explanation:

I hope this helps!

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If a speeding train hits the brakes and it takes the train 39 seconds to go from 54.8 m/s to 12 m/s what is the acceleration?
jekas [21]

Answer:

-1.09m/sec^2

Explanation:

Acceleration= (Vf-Vi)/Time

=12-54.8

= -42.8

= -42.8/39

=-1.09

-ve sign is due to recoil of train

as it suddenly hits brakes.

8 0
3 years ago
Read 2 more answers
The evil team of Ms. Moonstruck and Mr. Luny intend to deflect the Moon from its orbit around Earth by pulling it with a force o
BabaBlast [244]

Answer:

92867kg

Explanation:

DATA:

mass of the moon 'm_1'= 7.36 x 10^2^2kg

mass of the mini black hole 'm_2'=?

universal gravitational constant= 6.67x10^-^1^1 Nm²/kg²

distance 'r'= 7.47×10^6 m

force 'F'= 8170N

Newton's Law of Universal Gravitation is given by:

F=G\frac{m_1m_2}{r^2}

m_2=\frac{(8170)(7.47*10^6)^2}{(6.67*10^-^1^1)(7.36*10^2^2)}

m_2=92867kg

8 0
3 years ago
In your own words, explain what friction is
Andrew [12]

Answer:

Friction is a kind of force between two object when we rub or slide its surfaces together

for ex: when you rub the matchbox you get fire which is the result of friction

Explanation:

thats all i know

3 0
2 years ago
Read 2 more answers
The velocity of an ocean wave is 5m/s. The distance between crests is 3m. What is the frequency of the wave
alexgriva [62]

Answer:

1.67m

5m/s

Explanation:

Wavelength of the wave = 3m

Speed of the wave  = 5m/s

The distance between crest and the adjacent trough of water waves is known as the wavelength of a wave.

 To find the frequency ;

        V = f∧

V is the speed of the wave

f is the frequency

∧ is the wavelength

  Insert the parameters and find the frequency;

        f  = V/ ∧   = 5 / 3  = 1.67Hz

The rate at which the wave passed a given point is the speed of the wave and it is 5m/s

4 0
3 years ago
What is the force that is used to accelerate a 9 kg wagon 16 m/s squared?
gulaghasi [49]

Answer:

i dont really know

Explanation:

sorry :(

5 0
3 years ago
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