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LekaFEV [45]
3 years ago
10

Which of the following changes would decrease the coefficient of friction needed for this ride?

Physics
1 answer:
posledela3 years ago
7 0
Friction occurs between two contacting surfaces. The coefficient of friction is very much dependent on the roughness of these surfaces. Some of the many ways in which the coefficient can be lessened or decreased are to lubricate the surface or make it shiny by eliminating the spikes which caused the roughness. 
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Cloud [144]

Let the data is as following

mass of payload = "m"

mass of Moon = "M"

now we know that we place the payload from the position on the surface of moon to the position of 5r from the surface

So in this case we can say that change in the gravitational potential energy is equal to the work done to move the mass from one position to other

so it is given by

W = U_f - U_i

we know that

U_f = -\frac{GMm}{6r}

U_i = -\frac{GMm}{r}

now from above formula

W = -\frac{GMm}{6r} + \frac{GMm}{r}

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7 0
3 years ago
A substance has a volume of 10.0 cm3 and a mass of 89 grams. What is its density?
vovikov84 [41]
Density = mass / volume

D = 89 / 10.0

D = 8.9 g/cm³

hope this helps!
8 0
3 years ago
How many days does the earth take to rotate around the sun
ValentinkaMS [17]

Answer:

1 day

Explanation:

The spinning movement of Earth around its axis is known as Earth's rotation.

The Earth rotates around the Sun in 1 day that is 24 hours but once in every 23 hours, 56 minutes, and 4 seconds with respect to other stars.

According to the Indian astronomer Aryabhata, Earth rotates about its axis daily.

3 0
3 years ago
Two bricks are resting on the edge of the lab table. Shirley Sheshort stands on her toes and spots the two bricks. She acquires
PSYCHO15rus [73]

Explanation:

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4 0
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These illustrate action reaction forces (7 letters)
never [62]

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Explanation:

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3 0
3 years ago
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