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Thepotemich [5.8K]
3 years ago
8

What would the velocity of a wave traveling in a medium change?

Physics
1 answer:
zloy xaker [14]3 years ago
8 0
Both the speed and the direction of a wave could change
at the beginning and end of the medium, when the wave
crosses from one medium into a different one. 

But while the wave is moving from one place to another place
in the same medium, its speed and direction don't change. 
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Two airplanes leave an airport at the same time. The velocity of the first airplane is 730 m/h at a heading of 65.3 ◦ . The velo
yanalaym [24]

Answer:

Plane will 741.6959 m apart after 1.7 hour                    

Explanation:

We have given time = 1.7 hr

So if we draw the vectors of a 2d graph we see that the difference in angles is   = 102^{\circ}-65.3^{\circ}=36.7^{\circ}

Speed of first plane  = 730 m/h

So distance traveled by first plane = 730×1.7 = 1241 m

Speed of second plane = 590 m/hr

So distance traveled by second plane = 590×1.7 = 1003 m

We represent these distances as two sides of the triangle, and the distance between the planes as the side opposing the angle 58.6.

Using the law of cosine, r^2 representing the distance between the planes, we see that:

r^2=1241^2+1003^2-2\times 1003\times 1241cos(36.7)=550112.8295

r = 741.6959 m

3 0
3 years ago
I have multiple questions!
UNO [17]

I'm not sure about the rest but for question 2:

A theory is an attempt to come up with a big picture of all we know so far. It also drives future research as people do experiments to see if what the theory predicts actually happens. When experiments don’t support the theory, you have to change the theory and try again. That’s how science works. We come up with a “best guess” (theory), and then do research to test it’s accuracy. As we discover contradictions, we adjust the theory to take those into account, and then start testing the validity of the new theory.

3 0
3 years ago
A 4 V power source is connected in parallel to four resistors: 1, 2, 2, and 3. Find the total current.
Keith_Richards [23]

Answer:

Explanation:

Equivalent resistance is 1 / ((1/1) + (1/2) + (1/2) + (1/3)) = 3/7 Ω

I = V/R = 4(7/3) = 28/3 = 9.3 A    

4 0
2 years ago
Estimate the average rate of change in elevation from d to points i, ii, and iii, assuming the distance from d to i is 3500 m, t
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Ummm i am not going to be able say i am high

8 0
3 years ago
Um carro percorre um trecho de 450 km em escalar media do carro
Aleks04 [339]

Average speed of the car is defined as the ratio of total distance and total time

So here we will have

v_{avg} = \frac{distance}{time}

now we know that

distance = 450 km

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now from above equation we will have

v = \frac{450 km}{5 h} = 90 km/h

so the average speed will be 90 km/h

7 0
3 years ago
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