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MatroZZZ [7]
3 years ago
9

Suppose you are driving a car around in a circle of radius 212 ft, at a velocity which has the constant magnitude of 43 ft/s. A

string hangs from the ceiling of the car with a mass of 1.8 kg suspended from it. What angle (in degrees) will the string make with the vertical
Physics
1 answer:
Elanso [62]3 years ago
6 0

To solve this problem we will apply the concepts related to dynamic equilibrium. The vertical component of the tension is equivalent to the centripetal Force while the horizontal component of the tension is equivalent to the weight, therefore we will have the two equations,

Tsin\alpha = \frac{mv^2}{r}

Tcos\alpha = mg

Our values are,

v = 43ft/s = 13.11m/s

r = 212ft = 64.62m

Therefore if we divide both equation we have,

tan \alpha = \frac{v^2}{rg}

Replacing,

tan\alpha = \frac{13.11^2}{(64.62)(9.8)}

tan\alpha = 0.2714

\alpha = tan^{-1} (0.2714)

\alpha = 15.18\°

Therefore the angle required is 15.18°

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What led scientists to the discovery of the strong nuclear force?
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Answer:

Explanation:

The concept of a new strong nuclear force was introduced. In 1935, the first theory for this new force was developed by the Japanese physicist Hideki Yukawa, who suggested that the nucleons would exchange particles between each other and this mechanism would create the force.

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ANSWER FOR BRAINLEST AND 25 POINTS what is the word for this definition
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Read the paragraph from the section "Colombian President Declares An Emergency."
Galina-37 [17]

A  Many people who came to the hospital had very serious injuries.

Explanation:

From the passage, we can infer that many people who came to the hospital had very serious injuries.

Let us analyze the given options:

Many doctors were worried about the safety of their own families.

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Also, many people needed blood for treatment but there was an acute shortage. No way to treat and discharge them.

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<em>The fitting inference that can be drawn from the passage is that many people came to the hospital had serious injuries which led to blood shortage. </em>

learn more:

Emergency brainly.com/question/4496477

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5 0
3 years ago
What’s the frequency for problem #10?
Kaylis [27]

The answers penciled in on the sheet are fine ... 1500 Hz and 0.0006 sec.

If you want to get super-technical about it, you could count the number of full cycles on the WHOLE graph, from one side to the other.  At the right end, near 0.01 sec, you can notice an extra 1/4 of a cycle there.  So it's actually 15 and 1/4 cycles in 0.01 sec.

That makes the frequency (15.25 cycles) / (0.01 sec) = 1,525 Hz .

and the period ( second / 1525) = 0.000656... second.

But I think it would be OK if you didn't do that, and just call it 1500 Hz and 0.0006s.

The difference is only 1.6% , and the engineer in me says that's not enough to worry about.

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Which minerals help regulate the body’s fluid balance
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I believe it's potassium. 
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3 years ago
Read 2 more answers
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