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NISA [10]
3 years ago
8

____ crust forms the ocean floors

Physics
2 answers:
Zina [86]3 years ago
8 0
B is the correct answer. Hope this helps!! :)
Fittoniya [83]3 years ago
6 0

Answer:

lithosphere

Explanation:

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On my science test, there is a bonus question that I want to get right. Why would it be a bad idea to skydive on the moon? Hint:
eduard

Answer:

Because there is no air resistance

Explanation:

When an object falls on Earth, there are essentially two forces acting on it:

- The force of gravity, downward, equal to the weight of the object:

W=mg

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- The air resistance, F, which acts upward, and whose magnitude is generally proportional to v, the speed of the object

When the object starts its fall, its initial speed is zero: v = 0, so the air resistance is also zero: F=0, and the object accelerates downward due to gravity.

However, as it accelerates downward, its speed increases, and so does the air resistance F. However, F is upward, opposite to the direction of motion, therefore it reduces the net acceleration of the object; at a certain point, the magnitude of the air resistance will become equal to the weight, so that

mg = F

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On the Moon instead, there is no air resistance: this means that for an object falling down, the speed keeps increasing due to the effect of gravity, and it will never reach a terminal value: therefore, the final velocity at the impact will be much higher than on the Earth, if we assume the two objects have been dropped from a very high altitude from the surface.

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3 years ago
Sound is a disturbance that travels through a medium as a
Vinvika [58]

Answer:

Sound waves. Anything that vibrates is producing sound; soundis simply a longitudinal wave passing through a medium via the vibration of particles in themedium. Consider a sound wavetraveling in air

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All objects _<br> energy.
Alekssandra [29.7K]

Answer:

Explanation:

All objects <u>radiate</u> energy.

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2 years ago
Make I the subject<br> E=VIt
slava [35]

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I = E/Vt

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