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andreev551 [17]
4 years ago
5

The moving continents affect all subsystems on Earth. Which sentence identifies a potentially negative consequence of shifting c

ontinents?
Physics
1 answer:
dalvyx [7]4 years ago
7 0

Answer:

The movement of the plates sometimes leads to earthquakes and tsunamis.

The movement of the plates leads to lot of changes across the globe, and they might be positive or negative, though it depends from which point of view the things are seen.

On the boundaries of the plates, there's constant adjustment deep inside the crust because of their movement. Those adjustments cause parts inside the crust to break, crumble, producing a lot of force, transmitted as quick, strong vibrations, which we know as earthquakes.

The earthquakes can appear on land and in the sea/ocean. Both of them can be devastating and cause a lot of damage, be it human lives, destruction of plants, killing off animals, material damage. The ones in the seas'oceans, also lead to the formation of tsunami, which essentially is a huge, powerful, quick moving  waves that wipe out everything on their way.

Explanation:

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Analyzed or conducted

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2 years ago
What evidence supports the conclusion that a chemical reaction has occurred?
GalinKa [24]

Answer:

Precipitation formed

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Explanation:

3 0
2 years ago
Each driver has mass 79.0 kg. Including the masses of the drivers, the total masses of the vehicles are 800 kg for the car and 4
Mademuasel [1]

Answer:

Force exerted on the car driver by the seatbelt = 8139.4 N = 8.14 kN

Force exerted on the truck driver by the seatbelt = 1628.2 N = 1.63 kN

It is evident that the driver of the smaller vehicle has it worse. The car driver is in way more danger in this perfectly inelastic head-on collision with a bigger vehicle (the truck).

Explanation:

First of, we calculate the velocity of the vehicles after collision using the law of conservation of Momentum

Momentum before collision = Momentum after collision

Since the collision of the two vehicles was described as a head-on collision, for the sake of consistent convention, we will take the direction of the velocity of the bigger vehicle (the truck) as the positive direction and the direction of the car's velocity automatically is the negative direction.

Velocity of the truck before collision = 6.80 m/s

Velocity of the car before collision = -6.80 m/s

Let the velocity of the inelastic unit of vehicles after collision be v

Momentum before collision = (4000)(6.80) + (800)(-6.80) = 27200 - 5440 = 21,760 kgm/s

Momentum after collision = (4000 + 800)(v) = (4800v) kgm/s

Momentum before collision = Momentum after collision

21760 = 4800v

v = (21760/4800)

v = 4.533 m/s (in the direction of the big vehicle (the truck)

So, we then apply Newton's second law of motion which explains that the magnitude change in momentum is equal to the magnitude of impulse.

|Impulse| = |Change in momentum|

But Impulse = (Force exerted on each driver by the seatbelt) × (collision time) = (F×t)

Change in momentum = (Momentum after collision) - (Momentum before collision)

So, for the driver of the truck

Initial velocity = 6.80 m/s (the driver moves with the velocity of the truck)

Final velocity = 4.533 m/s

Change in momentum of the truck driver = (79)(6.80) - (79)(4.533) = 179.1 kgm/s

(F×t) = 179.1

F × 0.110 = 179.1

F = (179.1/0.11)

F = 1628.2 N = 1.63 kN

So, for the driver of the car

Initial velocity = -6.80 m/s (the driver moves with the velocity of the car)

Final velocity = 4.533 m/s

Change in momentum of the car driver = (79)(-6.80) - (79)(4.533) = -895.3 kgm/s

(F×t) = |-895.3|

F × 0.110 = 895.3

F = (895.3/0.11)

F = 8139.4 N = 8.14 kN

Hope this Helps!!!

3 0
3 years ago
Select the correct answer.
skelet666 [1.2K]

Answer:

B is the best answer for the question

6 0
3 years ago
Read 2 more answers
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