Answer:
the large amplitude wave keeps moving to the right
the small amplitude wave continues to move to the left.
When checking the answers, the correct ones are 1, 2
Explanation:
The waves fulfill the principle of superposition, which states that the value of the function at a point is the algebraic sum of the waves at a given instant.
The two waves in this exercise travel in the opposite direction, so when they are close, the resulting wave is the sum of the two waves, having a complicated shape. But when the waves follow their movement, they give in the same way as the initial a,
the large amplitude wave keeps moving to the right
the small amplitude wave continues to move to the left.
When checking the answers, the correct ones are 1, 2
Number of times the diaphragm move back and forth is 5.59×10^4
<u>Explanation:</u>
Given data,
ω=4.6 s
we have the formula
f=ω/2π
The number of times the diaphragm moves back and forth in 4.6 s is
Number of times= ft
Number of times= ft
=(ω/2π) t
=(7.54×10^4 rad/sec)(4.6 s)/2π
Number of time=5.59×10^4
Number of times the diaphragm move back and forth is 5.59×10^4
<u />
Answer: Interstellar dust is effective at blocking visible light because dust grains are so small.
Explanation: To find the answer, we need to know more about the interstellar dust.
<h3>What is interstellar dust?</h3>
- Interstellar dust developed from dying stars as they burn out.
- This dust can block the visible light as well as UV emerging from the stars, because dust grains can block light at optical wavelengths.
- it absorbs and scatters blue light more than red. thus, red light can pass through it.
- If we place a star behind the dust, it will look more redder than its usual color. This is called interstellar reddening.
- Grains have a typical size of .
Thus, we can conclude that, Interstellar dust is effective at blocking visible light because dust grains are so small.
Learn more about the interstellar dust here:
brainly.com/question/28044836
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Answer:
b. A voltage causes electric charges to move from lower to a higher potential.
Explanation:
As we know, current flows from high voltage to low voltage and the electric charge flows opposite to the direction of the current. That is why we can say that the electric charge flows from low voltage to high voltage.
Resistance does not cause the electron to flow from low voltage to high voltage.
Therefore the answer is b.
Answer:1
Explanation:
Let the heat given by flame be .
Let be the mass of water in case 1.
Let be the mass of water in case 2.
Let Δ be the temperature difference in case 1.
Let Δ be the temperature difference in case 2.
Let be the volume of water in case 1.
Let be the volume of water in case 2.
Let be the density of water.
Let be the specific heat of water.
Given,
Δ
Since the same heat is given to water in both the cases,
Δ
Δ
So,Δ=Δ
Since mass is product of volume an density,
Δ=Δ
Δ
So,Δ