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Lelechka [254]
2 years ago
13

A bubble at the bottom of lake rises to surface within 10.0 seconds with an acceleration of 10.0 meters per second. What is the

depth of the lake?
Physics
1 answer:
amm18122 years ago
5 0
If the bubble travels 10 meters per second and it takes 10 seconds, then just multiply the distance per second by the total seconds to get the total depth.
10 • 10 = 100
The lake is 100 meters deep.

Think of it this way to clarify the answer:
It takes a bubble traveling at a speed of 10 meters per second 10 seconds to travel 100 meters.
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What is 1.2 kg converted into mg.<br> I need to know for step by step please?
astra-53 [7]
Here’s a good photo to reference when converting in the metric system.

Each time you move down a step you move the decimal to the right, each time you move up a step you move the decimal to the left.

We are going from 1.2 kg or kilograms, which is at the very top left of the ladder. To get to mg or milligrams, we would have to make six jumps, so we’d move the decimal over six times.

1.2 > 12. > 120. > 1200. > 12000. > 120000. > 1200000.

So our final answer would be 1,200,000mg.
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3 years ago
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Answer:

Babies often struggle to go to sleep sometimes warm milk and sooting sounds help babies sleep

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A hawk flying at 13 m/s at an altitude of 156 m accidentally drops its prey. The parabolic trajectory of the falling prey is des
Anvisha [2.4K]

Answer:

The distance traveled will be 156.0 m

Explanation:

Please, see the attached figure 1 for a description of the problem.

The distance traveled by the prey is the magnitude of the vector "r" (see figure).

If the components of "r" are "rx" (horizontal component) and "ry" (vertical component), its magnitude will be:

|r| =\sqrt{(rx)^{2} + (ry)^{2}}

We already know the vertical component of r, ry, because the prey falls from an altitude of 156 m (see figure). Then ry = 156 m

To find the value of rx we will use the function that describes the trajectory of the prey (see figure 2):

y = -39 · x² + 156

When the prey hits the ground, the height is 0 (y = 0). rx will be the value of x for which y = 0.

0 = -39 · x² + 156

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x = 2.0 m

Then r = (2.0 m, -156.0 m)

The distance traveled will be:

|r| =\sqrt{(2 m)^{2} + (156 m)^{2}} = 156.0 m

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Answer:

The Vibrating parts of a Guitar is it's Strings

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