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kirill115 [55]
4 years ago
13

Which image shows a diffraction grating?

Physics
2 answers:
Rufina [12.5K]4 years ago
8 0

Answer:

The 3rd one

Explanation:

Vlad [161]4 years ago
3 0
I believe it’s the first one
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What do the law of superposition and the law of inclusion have in common? (1 point) 1. Both laws are about matching fossils in d
r-ruslan [8.4K]

Answer:

its b

i took the test

Explanation:

4 0
3 years ago
Small blocks A and B are held at rest on a smooth plane inclined at 30° to the horizontal. Each is held in equilibrium by a forc
Olin [163]
<h3><u>Answer</u> :</h3>

First of all, See the attachment for better understanding.

<u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u><u>_</u>

❂ <u>Weight of block A</u> :

➝ mg sin30° = 18

➝ W (1/2) = 18

➝ W = 18×2

➝ <u>W = 36N </u>

❂ <u>Weight of block B</u> :

➝ N sin30° = 18

➝ (Mg cos30°) sin30° = 18

➝ W' (√3/2)(1/2) = 18

➝ W' (√3/4) = 18

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5 0
3 years ago
A car starts from rest and increases its speed to 18 m/s in 22 seconds. What is the cars acceleration
IrinaVladis [17]

Magnitude of acceleration = (change of speed) / (time for the change)

Change of speed = (speed at the end) - (speed at the start)

Change of speed = (18 m/s) - (0 m/s) = 18 m/s

Time for the change = 22 sec

Magnitude of acceleration = (18 m/s) / (22 sec)

<em>Magnitude of acceleration = 0.818 m/s²</em>

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4 years ago
Write down the factors on which moment depends upon ?​
timurjin [86]

Answer:

  • The size of a force
  • The perpendicular distance from the pivot the line of action of force

Explanation:

Factors that affect the moment of a force are;

  • The size of a force
  • The perpendicular distance from the pivot the line of action of force

The magnitude of force applied is directly proportional to the moment of force in that for a perpendicular distance d, increased in force applied will result to a higher moment of force. When the perpendicular distance from the pivot is decreased while the force applied remains constant, the moment of force decreases.

5 0
3 years ago
One example of a very complex land ecosystem full of thousands of kinds of living things
german
A Tropical Rain Forest. It has both Biotic and Abiotic factors which will contribute to thousands of living things.
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