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Cerrena [4.2K]
4 years ago
10

A block of mass 20 kg sits on a ramp with an angle of 31 degrees above the horizontal. Assuming no friction, how fast will the b

lock accelerate down the ramp?
7.89 m/s^2
5.34 m/s^2
2.98 m/s^2
4.17 m/s^2
Physics
2 answers:
Artyom0805 [142]4 years ago
4 0

Answer:

2.98 m/s^2

Explanation:

I have done this before and it was a question on my physics test

snow_lady [41]4 years ago
4 0

Answer:

3ird one my boy ive seen alot of problems like this

Explanation:

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In the shadow of a tree with a dense, leafy canopy, one sees a number of light spots. Surprisingly, they all appear to be circul
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The characteristics of the diffraction phenomenon allow to find the result for the shape of the points of light that you pass the tree is:

  • The shape of the dots is circular because it is in the range of far-field diffraction.

Diffraction is the phenomenon where the undulatory part of the light becomes evident, it is the interference of the waves that make up each ray of light, for this phenomenon to occur it must be fulfilled that the wavelength is of the order of the space where pass the light.

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Diffraction can be classified depending on the distance to the observer:

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In this case, the distance from the leaves to the observer is large, therefore we are in the case of far-field diffraction and since the edge of the leaves that forms the diffraction is closed, the observable shape is a circle.

In conclusion using the characteristics of the diffraction phenomenon we can find the result for the shape of the points of light that pass the tree is:

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Learn more about diffraction here:  brainly.com/question/20140459

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Explanation:

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