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Liono4ka [1.6K]
3 years ago
7

What happens to a wave when reflected off a node

Physics
1 answer:
Bezzdna [24]3 years ago
7 0

A light wave travelling in air that is reflected by a glass barrier will undergo a 180° phase change, while light travelling in glass will not undergo a phase change if it is reflected by a boundary with air. ... The phase changes that take place upon reflection play an important part in thin film interference.
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PLEASE HELP WILL GIVE BRAINLEST!!!
Aleks04 [339]

Answer:

huh what do u want tho its nothing bad

Explanation:

3 0
3 years ago
A load of 250 kg is hung by a crane's cable. The load is pulled by a horizontal force such that the cable makes a 30 angle to th
Anna [14]

Answer:

1250\sqrt{3}

Explanation:

Let's look at this in a simple manner, because it is.

The crane weights 250Kg. Okay.

Since it is hung, there is the acceleration of gravity being applied on it (10m/s²)

Since F = m * a

F = 250 * 10

F = 2500

Now we know that the downward Force is 2500N.

To find the force that is being applied on that 30° angle, we can multiply our 2500N by cos30°, which happens to be \frac{\sqrt{3}}{2}.

Therefore, the force pulling the box in the cable's direction is:

\frac{2500\sqrt{3} }{2}  = 1250\sqrt{3}

<em />

<em>If you have any questions feel free to comment.</em>

<em />

<em>Have a great one and mark brainliest if it helped, please</em>

8 0
2 years ago
What is latent heat energy's definiton
tamaranim1 [39]
The heat energy which has to be supplied to change the state of a substance is called its latent heat. Latent heat does not increase the kinetic energy of the particles of the substance, so the temperature of a substance does not rise during the change of state. :))
6 0
3 years ago
Suppose you walk 21.5 m straight east and then 12.5 m straight north. How far are you from your starting point (in m)
stira [4]

Answer:

24.9 m

Explanation:

A triangle is a polygon with three sides and three angles. There are different types of triangles such as the equilateral triangle, isosceles triangle, scalene triangle, right angled triangle.

You walk 21.5 m straight east and then 12.5 m straight north. This forms a right angled triangle with a horizontal distance of 21.5 m, a vertical distance of 12.5 m and the hypotenuse is the distance between the ending and starting point. Let x represent the distance between the ending and starting point. Therefore using Pythagoras theorem:

x² = 21.5² + 12.5²

x² = 462.25 + 156.25

x² = 618.5

Taking square root of both sides:

√x² = √618.5

x = √618.5

x = 24.9 m = distance between the ending and starting point.

4 0
3 years ago
Consider the free-body diagram. Assume there is a net force of 30N to the right and the friction force equals 20N. What is the a
oksano4ka [1.4K]

Answer:the answer would be C.50N

Explanation:I just took the test

6 0
4 years ago
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