What objects have less resistance

Physics

1 answer:

Leto [7]3 years ago

5 0

Answer:

Free fall and air resistance

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B. 60 cm

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4 years ago

A satellite is in circular orbit around the earth. The orbit the satellite is at a height of 420 km above the earth's surface. F

astraxan [27]

Answer:

7661.06 m/s

Explanation:

R = Radius of Earth = $6.38\times 10^6\ m$

h = Distance from the Earth = 420000 m

G = Gravitational constant = $6.674\times 10^{-11} N m^2/kg^2$

M = Mass of Earth = $5.98\times 10^{24}\ kg$

$V=\sqrt{g{\frac{R^2}{R + h}}}\\\Rightarrow V=\sqrt{\frac{GM}{R^2}{\frac{R^2}{R + h}}}\\\Rightarrow V=\sqrt{\frac{6.674\times 10^{-11}\times 5.98\times 10^{24}}{(6.38\times 10^6)^2}{\frac{(6.38\times 10^6)^2}{6.38\times 10^6 + 420000}}}\\\Rightarrow V=7661.06\ m/s$

The orbital speed of the satellite is 7661.06 m/s

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4 years ago

Give reasons why water should not be used in liquid-glass thermometer

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Answer:

one of the reasons is that it wets the glass thermometer it also doesn't detect slight changes in temperature of the atmosphere it has a high boiling point I don't know the rest

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3 years ago

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Which of these would have the greatest pressure?

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The third one because it is a small one and it had high and high temp so it has the most modecules.

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The minimum thickness of the Lucite plate is 0.670 μm.