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trapecia [35]
3 years ago
12

Why is a diver under water unable to hear sound produced in air?​

Physics
1 answer:
defon3 years ago
5 0

Answer:

Because the surface tension of the water does not allow the sound waves in the air to pass through.

Explanation:

Please mark as brainliest. :) :D :3

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Identify at least one example each of absorption, transmission, reflection, and refraction of waves in this photograph.
Ronch [10]

Answer:

hi,human absorb 0oxygen =aborption ,reflection =the light that entered in the water,refraction =the light that pass outside the water

Explanation:

8 0
3 years ago
Read 2 more answers
A leaf fell from a tree branch. The path it followed is shown in the diagram below.
prisoha [69]

The leaf fell at the crooked path instead of straight down because air currents and gravity applied changing and unbalanced forces to the leaf.

<h3>What is an air current?</h3>

An air current is defined as the changes in atmospheric pressure that causes the movement of air from one area to another.

When a leaf is detached naturally from the tree, it won't fall straight down to the floor but will fall a distance away from the tree due to the action of air current and some unbalanced forces.

Learn more about leaf here:

brainly.com/question/24234175

#SPJ1

4 0
2 years ago
The police department is very proud of their new police cars. They announced that they are
il63 [147K]
All cops are brave. And what’s the full question?
4 0
3 years ago
A skateboarder is moving at a constant speed of
Flauer [41]

The amount of time that passes from when  this skateboarder begins to slow down until she begins to  move back down the incline is 8.75 seconds.

<u>Given the following data:</u>

  • Speed = 1.75 m/s
  • Acceleration = -0.2 m/s^2

To calculate the amount of time that passes from when  this skateboarder begins to slow down until she begins to  move back down the incline, we would apply the first equation of motion;

<h3>The formula for the first equation of motion.</h3>

Mathematically, the first equation of motion for a decelerating object is given by this formula;

V=U-at

<u>Where:</u>

  • a is the acceleration.
  • V is the final speed.
  • U is the initial speed.
  • t is the time measured in seconds.

Substituting the given parameters into the formula, we have;

1.75 = 0-(-0.2)t\\\\1.75=0.2t\\\\t=\frac{1.75}{0.2}

Time, t = 8.75 seconds.

Read more on acceleration here: brainly.com/question/24728358

8 0
3 years ago
A spacecraft with a proper length of 250 m passes by an observer on the earth. according to this observer, it takes 0.770 µs for
Sophie [7]
If 1 second = 10000 μs
what about how many seconds = 0.77 μs
the calculations would be done lke this 
          0.77 x 1/1000000 = 7.7 x 10 ^ -7
Speed = distance / time
distance = length of the spacecraft
therefore speed = 250/7.7 x 10^ -7
ans = 324675324.7 m/s


4 0
3 years ago
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