Answer:
When two light waves traveling from opposite directions meet they experience wave interference. This happens when they are traveling along the same medium!
Explanation:
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Answer:
Explanation:
The Bernoulli equation is:
(1)
- P is pressure related to the fluid
- ρ is the density of the fluid (ρ(air)=1.23 kg/m³)
- v is the speed of the fluid
- h is the displacement from one position to the other
Now let's apply the equation (1), for our case:
(2)
here we assume that h is the same in both cases so it canceled out.
- <u>subscript 1</u> is related to the upper surface of the wings
- <u>subscript 2</u> is related to the low surface of the wings
Solving the equation for v₁ we have:
(3)
Now, we know that pressure P=F/A (force over area)
(4)
Combining (3) and (4), we can find v1.
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For reducing erosion of water banks, "Buffer strips" need to be used
In short, Your Answer would be option A
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Answer:
A) you can't see far ahead
Answer: 50 gram superball that strikes the wall at 1 m/s and bounces away at 0.8 m/s has greater change in kinetic energy.
Explanation:
50 gram superball that strikes the wall at 1 m/s and bounces away at 0.8 m/s has the greater change in kinetic energy because the collision is elastic in nature that is bodies separates after collision and doesn't lose any kinetic energy.
Also for an elastic collision, both the momentum and energy of the bodies are conserved compare to inelastic collision where only momentum is conserved but not the kinetic energy(this is attributed to bodies that sticks together after collision).