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3 years ago

Which statement best explains why Earth is not a perfect sphere?

Physics

2 answers:

UkoKoshka [18]3 years ago

5 0

Earth’s spin on its axis causes the equator to bulge

vladimir2022 [97]3 years ago

3 0

Answer:

Earth's spin on its axis causes the equator to bulge

Explanation:

The Earth is not a perfect sphere but an oblate ellipsoid. The force that holds a planet is gravity. The Earth is rotating on its axis at a speed of 460 m/s at the equator. Due to this reason there is a build up of centrifugal force on the Earth which causes it to expand giving it a bulge.

The Sun and the Moon's gravity causes waves on the surface of large water bodies.

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The SI unit for acceleration is_____<br> a m/s.<br> b m/s 2<br> c m/s2<br> d none of the above

zalisa [80]

I dont know from option
Because SI Unit of acceleration is m/s^2

7 0

3 years ago

8. You push downward on a box with a force of 750 N. The box is on a flat horizontal surface for which the coefficient of static

natima [27]

Answer:

The mass of the heaviest box you will be able to move with this applied force = 61.4 kg

Explanation:

From the diagram attached, the forces acting on the box include the weight of the box, applied force on the box, normal reaction of the surface on the box and the Frictional force in the opposite direction to the applied force.

For the box to be able to move, the applied force must have a horizontal component that at least matches the Frictional force between the box and the surface. This is the force balance in the horizontal direction.

Resolving the applied force into horizontal and vertical components,

Fₓ = 750 cos 25° = 679.73 N

Fᵧ = 750 sin 25° = 316.96 N

Doing a force balance in the vertical axis,

N = (mg + 316.96)

Frictional force = μN = μ (mg + 316.96)

μ = 0.74, g = 9.8 m/s²

Frictional force = Fᵧ

μ (mg + 316.96) = 679.73

0.74(9.8m + 316.96) = 679.73

7.252m + 234.5504 = 679.73

7.252m = 679.73 - 234.5504 = 445.1796

m = (445.1796/7.252)

m = 61.4 kg

Hope this Helps!!!

6 0

3 years ago

A person applies a rightward force of 80 N to a cart of physics textbooks what is the reaction force

Goryan [66]

Just as Prof. Newton said: "For every action, there is an EQUAL, OPPOSITE reaction.". (See his motion law #3.)

If our person APPLIED a force of 80N pointing to the right, then that's the 'action'. It must follow, as the night follows the day, that the strength of the equal REaction is also 80N, and it points to the left because it's opposite to the action.

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3 years ago

Mr. and Mrs. miller both have blue eyes. Could any of their children be born with brown eyes? Circle yes or no. And what rule an

mrs_skeptik [129]

Yes, because they children also will have blue eyes because every each single childrean will follow their parents

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3 years ago

Read 2 more answers

Each of us weighs a tiny bit less on the ground floor of a skyscraper than we do on the top floor. One reason for this is that _

OLga [1]

B. the mass of the building attracts you upward slightly

6 0

4 years ago