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givi [52]
3 years ago
6

How long does it take for the velocity of the rain drop to reach 99% of its terminal velocity? (assume the conditions from part

(b). round your answer to two decimal places.)?
Physics
1 answer:
vodomira [7]3 years ago
3 0
If you think about it its part a and b 
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The two masses in the Atwood's machine shown in the figure are initially at rest at the same height. After they are released, th
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According to the description given in the photo, the attached figure represents the problem graphically for the Atwood machine.

To solve this problem we must apply the concept related to the conservation of energy theorem.

PART A ) For energy conservation the initial kinetic and potential energy will be the same as the final kinetic and potential energy, so

E_i = E_f

0 = \frac{1}{2} (m_1+m_2)v_f^2-m_2gh+m_1gh

v_f = \sqrt{2gh(\frac{m_2-m_1}{m_1+m_2})}

PART B) Replacing the values given as,

h= 1.7m\\m_1 = 3.5kg\\m_2 = 4.3kg \\g = 9.8m/s^2 \\

v_f = \sqrt{2gh(\frac{m_2-m_1}{m_1+m_2})}

v_f = \sqrt{2(9.8)(1.7)(\frac{4.3-3.5}{3.5+4.3})}

v_f = 1.8486m/s

Therefore the speed of the masses would be 1.8486m/s

6 0
3 years ago
NEED HELP FAST<br><br>Are the circuits in a car parallel or series? <br>how do you know?
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If the <span>circuits in a car</span> were series, they would go out at the same time.

I hope this helps! :3
3 0
2 years ago
Write down the DE of a simple harmonic oscillator (for example, a mass-spring system) Draw a diagram to show a mass spring syste
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Answer:

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7 0
3 years ago
two soccer players run toward each other. one player has a mass of 85 kg and runs west with a speed of 8 m/s, while the other ha
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Answer:

Total momentum, p = 55 kg-m/s

Explanation:

It is given that,

Mass of player 1, m₁ = 85 kg

Mass of player 2, m₂ = 105 kg

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Speed of player 2, v₂ = 7 m/s (east)

Momentum is equal to the product of mass and velocity. For this system, momentum is given by :

p=m_1v_1+m_2v_2

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p = 55 kg-m/s

The total momentum of the system made up of the two players is 55 kg-m/s.

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