Answer:
v = 6295.55 m/s
Explanation:
Given that,
The radius of a planet,
The free fall acceleration of the planet, a = 7.45 m/s²
We need to find the tangential speed of a person standing at the equator.
Also, the centripetal acceleration was equal to the gravitational acceleration at the equator.
We know that,
Centri[etal acceleration,
So, the tangential speed of the person is equal to 6295.55 m/s.
It goes from positive to negative
11. Density of the piece of wood = 3000 g/cm³
12. Density of wooden block = 2 g/cm³. and it will not float in water.
13. Volume of the plastic ball should be 250 mL
14. Mass of the ice cube = 0.162 g
15. Volume of gasoline spilled is equal to 2000 mL
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11.
<u>Formula:</u>
Given:
Mass of wood piece = 7500 g
Volume of wood piece = 2.5 cm³
Therefore,
Density of the piece of wood = 3000 g/cm³
12.
<u>Formula:</u>
Given:
Dimensions of wooden block = length × width × height = 5 cm × 4 cm × 2 cm
Mass = 80.0 g
Volume of wooden block =
Therefore,
Density of wooden block = 2 g/cm³.
Density of water is equal to 1 g/cm³
2 g/cm³ > 1 g/cm³
Since density of wooden block is greater than the density of water, the piece of wood will not float in water. It will sink.
13.
<u>Formula:</u>
Given:
Mass of the ball = 125 g
Density = 0.5 g/mL
Therefore,
Volume = 250 mL
Volume of the plastic ball should be 250 mL
14.
<u>Formula:</u>
Given:
Dimensions of ice cube = length × width × height = 3 cm × 3 cm × 3 cm
Density = 0.006 g/mL
Volume of ice cube =
Since,
Therefore,
Mass of the ice cube = 0.162 g.
15.
<u>Formula:</u>
Given:
Mass of gasoline = 1330 g
Density = 0.665 g/mL
Therefore,
Volume = 2000 mL
Volume of gasoline spilled is equal to 2000 mL
Answer:
https://www.quora.com/Why-do-you-think-standards-of-beauty-have-changed-over-the-years
Explanation:
your answer is in this link
The amount of current flowing through the wire
The number of coils in the wire
The material in the core