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Alinara [238K]
4 years ago
11

Which is true of the buoyant force?

Physics
1 answer:
crimeas [40]4 years ago
5 0
Buoyant force A. acts in the upward direction.

If the Buoyant force is greater than the gravitational force (as seen in ducks), they will stay floated

If the Buoyant force is less than the gravitational force (for example, a leaking ship) the ship would sink.

hope this helps
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If a sound wave travels through air at a speed of 345 m/s, what would be the frequency of a 0.80 m long wave?
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Answer:

D

Explanation:431.3

7 0
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Einstein and Lorentz, being avid tennis players, play a fast-paced game on a court where they stand 20.0 m from each other. Bein
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Answer:

A) 185.6 J

B) 9.396 x 10^14 J

C) 4x10^7 m/s

D) 20 m

E) 9.09x10^-8 sec

F) 9.09x10^-8 sec

Explanation:

Detailed explanation and calculation is shown in the image below

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What fraction of Earth’s volume is taken up by the core?
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Answer:

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33) Osha data : true

34 ) False

Explanation:

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6 0
4 years ago
Thomas threw a ball down a pit that was 400m deep. a) How long did it take to land? b) What speed was it going when it landed?​
bulgar [2K]

Hi there!

a)

We can use the equation t = √2d/g to solve. (Let's let g = 10 m/s²)

**How to get this equation**

We have the equation:

Δd = vit + 1/2at²

For freefall, we know that vi = 0, so we are left with:

Δd = 1/2at²

We know that a = g. Rearrange in terms of t:

2Δd / a = t²

Square root both sides:

√(2d/a) = t

Plug in the height and gravity:

t = √2(400)/10 = √800/10 = √80 ≈ 8.94 sec

b)

Find the final speed using the following formula:

vf = √2gd

**How to derive**

We know the equation:

vf² = vi² + 2ad

vi = 0, so:

vf² = 2ad

Square root both sides:

vf = √2ad

vf = √2(400)(10) = √8000 ≈ 89.44 m/s

6 0
3 years ago
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