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2 years ago

2. What gravitational attraction does the moon have on the earth? (mass of earth is 6 x

Physics

1 answer:

lions [1.4K]2 years ago

7 0

Answer:

Given that,

Mass of the Earth m

=6×10

Mass of the Moon m

=7.4×10

Distance between the Earth and the Moon d=3.84×10

km=3.84×10

Gravitational Constant G=6.7×10

−11

/kg

Now, by using Newton’s law of gravitation

(3.84×10

)

6.7×10

−11

×6×10

×7.4×10

14.8225×10

297.48×10

F=20.069×10

F=20.1×10

Hence, the gravitational force of attraction is 20.1×10

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SI unit for electrical current

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3 years ago

A certain quantity of steam has a temperature of 100.0 oC. To convert this steam into ice at 0.0 oC, energy in the form of heat

KonstantinChe [14]

Answer:

2452.79432 m/s

Explanation:

m = Mass of ice

$L_s$ = Latent heat of steam

$s_w$ = Specific heat of water

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v = Velocity of ice

$\Delta T$ = Change in temperature

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$Q_1=mL_s\\\Rightarrow Q_1=m(2.256\times 10^6)$

Heat released from water at 100 °C

$Q_2=ms_w\Delta T\\\Rightarrow Q_2=m4186\times (100-0)\\\Rightarrow Q_2=m0.4186\times 10^6$

Heat released from water at 0 °C

$Q_3=mL_i\\\Rightarrow Q_3=m(333.5\times 10^3)\\\Rightarrow Q_3=m(0.3335\times 10^6)$

Total heat released is

$Q=Q_1+Q_2+Q_3\\\Rightarrow Q=m(2.256\times 10^6)+m0.4186\times 10^6+m(0.3335\times 10^6)\\\Rightarrow Q=3008100m$

The kinetic energy of the bullet will balance the heat

$K=Q\\\Rightarrow \frac{1}{2}mv^2=3008100m\\\Rightarrow v=\sqrt{2\times 3008100}\\\Rightarrow v=2452.79432\ m/s$

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3 years ago

What is the S.I. unit of drift velocity and electron mobility?

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3 years ago

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BlackZzzverrR [31]

Answer:

False. The net force is Zero

Explanation:

To answer this question we propose the solution of the problem.

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In conclusion of the previous one for the system the net force is Zero, all are internal. Therefore, the only thing that happens is a redistribution of speeds according to the conservation of the moment.

Let's review the answer.

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