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3 years ago

Can y’all please help

Physics

1 answer:

TiliK225 [7]3 years ago

5 0

Answer:

The cat's speed when it slid off the table was 2.53 m/s

Explanation:

Horizontal Motion

When an object is thrown horizontally at a speed v, from a height h, it describes a curved path ruled by gravity, until it hits the ground.

the range or maximum horizontal distance traveled by the object can be calculated as follows:

$\displaystyle d=v\cdot\sqrt{\frac {2h}{g}}$

The situation described in the problem fits into the concept of a horizontal launch when the cat slides off the table and gets to the ground some distance ahead.

It's given the range as d=1.3m and the height h=1.3 m, thus we can find the cat's speed by solving the equation for v:

$\displaystyle v=d\cdot\sqrt{\frac {g}{2h}}$

Where $g=9.81\ m/s^2$

Substituting values:

$\displaystyle v=1.3\cdot\sqrt{\frac {9.81}{2\cdot 1.3}}$

$\displaystyle v=1.3\cdot\sqrt{\frac {9.81}{2.6}}$

Calculating:

v = 2.53 m/s

The cat's speed when it slid off the table was 2.53 m/s

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Answer:

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Answer:

a) $F=1.044\times 10^9\ N$

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d) Treat the humans as though they were points or uniform-density spheres.

Explanation:

Given:

mass of Mars, $M=6.4\times 10^{23}\ kg$

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mass of human, $m=80\ kg$

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$F=G.\frac{M.m}{r^2}$

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The magnitude of the gravitational force exerted by the human on Mars is equal to the force by the Mars on human.

$F'=F$

$F'=1.044\times 10^9\ N$

When a similar person of the same mass is standing at a distance of 4 meters:

$F_p=6.67\times10^{-11}\times \frac{80\times 80}{4}$

$F_p=1.0672\times10^{-7}\ N$

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Yes, we also have to ignore the effect of sun, but as asked in the question we have to calculate the gravitational force only due to one body on another specific body which does not brings sun into picture of the consideration.

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3 years ago

Thermodynamics

Akimi4 [234]

Answer:

E = 3.8 kJ

Explanation:

Given that,

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3 years ago

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Answer:

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The walking time is 3.5 minutes. Since 1 minute = 60 seconds, then the walking time is 210 seconds.

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Thus,

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Answer:

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