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andreev551 [17]
2 years ago
9

The amount of sea ice and permafrost have steadily decreased near Shishmaref, Alaska, over the last century. The loss of ice has

allowed ocean waves to erode the land and destroy property. What might be causing this melting?
Physics
1 answer:
Dovator [93]2 years ago
6 0

Answer:

Climate change, where there is an increase in the average temperature, due to continuous human activities. These activities increase greenhouse gases in the atmosphere.

Explanation:

Alaska is the largest state in the United States, and it has a cold climate. The climate changed over time as human activities such as coal mining contributed to greenhouse gas emissions leading to global warming. Over the years. the variations in weather leading to climate change melt the permafrost (frozen ground below the soil surface) causing ocean waves to erode the land and destroy property.

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Tju [1.3M]

m = mass of the person = 82 kg

g = acceleration due to gravity acting on the person = 9.8 m/s²

F = normal force by the surface on the person

f = kinetic frictional force acting on the person by the surface

μ = Coefficient of kinetic friction = 0.45

The normal force by the surface in upward direction balances the weight of the person in down direction , hence

F = mg                                          eq-1

kinetic frictional force on the person acting is given as

f = μ F

using eq-1

f = μ mg

inserting the values

f = (0.45) (82) (9.8)

f = 361.6 N

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3 years ago
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1. You get hit with a force of 45 N by a ball with a mass of 0.75 kg. How fast was the
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Answer:

60 {ms}^{ - 2}

Explanation:

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hence, the Acceleration of the ball would be. 60 meters per second square

60m {s}^{ - 2}

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3 years ago
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