i do not know.....................................
If two sources emit waves with the same wavelength and a constant phase difference ϕ, they are said to be coherent.
<h3>What is coherent source ?</h3>
- If the frequency and waveform of two wave sources are the same, they are coherent. Waves' optimal quality of coherence makes stationary interference possible.
- When the phase difference between two beams of light is constant, they are coherent; if the phase difference is random or changes, they are noncoherent.
- The concept of a superpositioning at the core of quantum physics and quantum computing is referred to as "quantum coherence." Quantum coherence specifically considers a scenario in which a wave property of an item is split in two and the two waves coherently interfere with one another.
- The interference visibility, which examines the size of the interference fringes in relation to the input waves, is an easy way to measure the degree of coherence; correlation functions provide a precise mathematical definition of the degree of coherence.
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Answer:
5m/s/s
Explanation:
10N bc you subtract 10N from 20N and you get 10
a=f/m
F=10N
m=2kg
10/2=5
Best way is to study, pay attention in class. Something i have found very helpful is take notes. Writing things down is a very good way to remember content.
Answer:
1546.1 mph
Explanation:
Let's take the east direction as positive x-direction and north as positive y-direction.
The components of the initial velocity of the jet are:
![v_x = 858 mph\\v_y = 0](https://tex.z-dn.net/?f=v_x%20%3D%20858%20mph%5C%5Cv_y%20%3D%200)
while the components of the wind's velocity are
![a_x = (777)(cos 38^{\circ})=612.2 mph\\a_y = (777)(sin 38^{\circ})=478.4 mph](https://tex.z-dn.net/?f=a_x%20%3D%20%28777%29%28cos%2038%5E%7B%5Ccirc%7D%29%3D612.2%20mph%5C%5Ca_y%20%3D%20%28777%29%28sin%2038%5E%7B%5Ccirc%7D%29%3D478.4%20mph)
So, the components of the new velocity of the jet are:
![v'_x = v_x + a_x = 858+612.2 =1470.2 mph\\v'_y = v_y+a_y = 0+478.4=478.4 mph](https://tex.z-dn.net/?f=v%27_x%20%3D%20v_x%20%2B%20a_x%20%3D%20858%2B612.2%20%3D1470.2%20mph%5C%5Cv%27_y%20%3D%20v_y%2Ba_y%20%3D%200%2B478.4%3D478.4%20mph)
And therefore, the new speed is the magnitude of the new velocity, so:
![v'=\sqrt{v'_x^2+v'_y^2 }=\sqrt{(1470.2)^2+(478.4)^2}=1546.1 mph](https://tex.z-dn.net/?f=v%27%3D%5Csqrt%7Bv%27_x%5E2%2Bv%27_y%5E2%20%7D%3D%5Csqrt%7B%281470.2%29%5E2%2B%28478.4%29%5E2%7D%3D1546.1%20mph)