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emmasim [6.3K]
3 years ago
5

(Please help ASAP)

Physics
2 answers:
dem82 [27]3 years ago
4 0

Answer: true

Explanation:

Density, mass of a unit volume of a material substance

Ronch [10]3 years ago
3 0

Answer:

I think its true? do your research to be 100% sure

Explanation:

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What happens if u slow water molecules down
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The only way to slow them down is to COOL the water.  When you do that, you take kinetic energy away from the molecules.  When you take enough kinetic energy away from water molecules, the water freezes.

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Is wooden blocks transparent,translucent or opaque ​
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Materials such as wood, stone, and metals are opaque to visible light.
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help please if the mass of the sample of amber is 18 grams, what is its volume? 9.0 cm3 16.4 cm3 19.8 cm3 36 cm3
aliina [53]

The volume of the sample, in cm³, is

                      18 / (density of amber, in gm/cm³) .
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you must exert a force of 4.5 N on a book to slide it across a table. If you do 2.7 j of work in the process, how far have you m
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4 years ago
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Determine the minimum amount of energy needed to move a satellite from its orbit around the Earth to an infinite distance from t
zmey [24]

Answer:19.80\times 10^{10} J

Explanation:

Given

mass of satellite m=7.45 \times 10^3 kg

orbital radius R=7.50\times 10^6 m

mass of Earth M=5.97\times 10^{24} kg

Minimum amount of Energy to move Satellite from its orbit to an infinite distance is sum of Potential Energy + Kinetic Energy of Satellite

W=U+K.E.

U=-G\frac{Mm}{R}

U=-6.67\times 10^{-11}\times \frac{5.97\times 10^{24}\times 7.45 \times 10^3}{7.50\times 10^6}

U=-\frac{296.658\times 10^{16}}{7.5\times 10^6}

U=-39.55\times 10^{10} J

K.E.=\frac{1}{2}\times mv^2

Where v=orbital\ velocity

v=\sqrt{\frac{GM}{r}}=\sqrt{\frac{6.67\times 10^{-11}\times 5.97\times 10^{24}}{7.50\times 10^6}}

v^2=5.30\times 10^7 m/s

K.E.=\frac{1}{2}\times mv^2

K.E.=\frac{1}{2}\times 7.45\times 10^3\times (5.30\times 10^7)=19.74\times 10^{10} J

W=-39.55\times 10^{10}+19.74\times 10^{10}

W=-19.80\times 10^{10} J

i.e. 19.80\times 10^{10} J Energy is required to provide to move Satellite out of its orbit

8 0
3 years ago
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