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2 years ago

How much does a person weigh if it takes 700 kg*m/s to move them 10 m/s NEED ASAP

Physics

1 answer:

madreJ [45]2 years ago

5 0

Answer:

$\huge\boxed{m = 70 \ kg}$

Explanation:

Given Data:

Momentum = P = 700 kg m/s

Velocity = v = 10 m/s

Required:

Mass = m = ?

Formula:

P = mv

Solution:

m = P / v

m = 700 / 10

m = 70 kg

$\rule[225]{225}{2}$

Hope this helped!

<h3>~AnonymousHelper1807</h3>

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Answer:

a) factor $b=\sqrt{2}$

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c) factor $b=1$

d) factor $b=1$

Explanation:

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$T=\frac{1}{f}$

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where:

$f=$ frequency of oscillation

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$k=$ stiffness constant of the spring

a) On doubling the mass:

New mass, $m'=2m$

Then the new time period:

$T'=2\pi\sqrt{\frac{m'}{k} }$

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where the factor $b=\sqrt{2}$ as asked in the question.

b) On quadrupling the stiffness constant while other factors are constant:

New stiffness constant, $k'=4k$

Then the new time period:

$T'=2\pi\sqrt{\frac{m}{k'} }\\\\T'=2\pi\sqrt{\frac{m}{4k} }\\\\T'=\frac{1}{2} \times 2\pi\sqrt{\frac{m}{k} } }\\\\T'=\frac{1}{2} \times T$

where the factor $b=\frac{1}{2}$ as asked in the question.

c) On quadrupling the stiffness constant as well as mass:

New stiffness constant, $k'=4k$

New mas, $m'=4m$

Then the new time period:

$T'=2\pi\sqrt{\frac{m'}{k'} }\\\\T'=2\pi\sqrt{\frac{4m}{4k} }\\\\T'=1 \times 2\pi\sqrt{\frac{m}{k} } }\\\\T'=1 \times T$

where factor $b=1$ as asked in the question.

d) On quadrupling the amplitude there will be no effect on the time period because T is independent of amplitude as we can observe in the equation.

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1 year ago

Two balls with charges +Q and +4Q are separated by 3R. Where should you place another charged ball Q0 on the line between the tw

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Answer:

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An alloy is made of a material of specific gravity 7.87 and another material of specific gravity 4.50. The alloy of mass 750g ha

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Answer:

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Explanation:

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2 years ago

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Answer:

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Explanation:

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Since there is no acceleration along the horizontal direction, we have

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Consider the motion of the ball along the vertical direction

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Since Y > 1 m

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2 years ago

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Delvig [45]

Answer:

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2 years ago