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Gnesinka [82]
2 years ago
9

Arrange the following lengths in their increasing magnitude 1 meter, centimeter, 1 kilometer, 1 millimeter ​

Physics
1 answer:
telo118 [61]2 years ago
3 0

Answer:

1 millimetre, 1 centimeter, 1 meter, 1 kilometer

Hope it helped u if yes mark me BRAINLIEST

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A stone on ground is zero energy​
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Answer:

A stone on the ground does not have zero energy…there is an internal potential in every object. Aldo is not in action or in any mechanical motion it is being acted upon by gravity and also molecular forces and energy.

<em>Hope</em><em> </em><em>this</em><em> helps</em><em> </em><em>!</em>

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When a car crashes, do you think its speed can make a difference in the<br> amount of damage done?
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Yes

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Sally is concerned about the X-ray images her dentist plans to take of her teeth. She has read that X-rays can cause tissue effe
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Read 2 more answers
a ladder is resting as shown in the picture. if the mass of ladder is 5 kg and the length is 120 cm. Determine the Normal Force
Artyom0805 [142]

Answer:

17.64 N

Explanation:

Draw a free body diagram (see attached).  At the center of the ladder is weight pulling down.  At point C, we have a normal force pushing perpendicular to the ladder.  At point A, we have reaction forces in the x and y directions.

For simplicity, we can divide the normal force into x and y components.  The slope of the ladder is -80/60, so the slope of the normal force is 60/80.  Therefore:

Ny / Nx = 60 / 80

Ny / Nx = 3/4

Next, we'll take the sum of moments at point A:

∑τ = Iα

-Wd + Ny (60) + Nx (80) = 0

d is the horizontal distance between A and the center of the ladder.  We can find it using similar triangles.  From Pythagorean theorem, we know the distance between A and C is 100 cm.  So:

60 / 100 = d / 60

d = 36

-(5)(9.8)(36) + Ny (60) + Nx (80) = 0

60 Ny + 80 Nx = 1764

We now have two equations and two variables.  Solving:

60 (3/4 Nx) + 80 Nx = 1764

45 Nx + 80 Nx = 1764

125 Nx = 1764

Nx = 14.112

Ny = 3/4 Nx

Ny = 10.584

Using Pythagorean theorem to find N:

N = √(Nx² + Ny²)

N = 17.64

The magnitude of the normal force is 17.64 N.

6 0
3 years ago
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