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ycow [4]
3 years ago
12

How does gravity affect maglev trains?

Physics
1 answer:
yuradex [85]3 years ago
3 0
Earth pulls it downward to the gravitational force
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The heart has structures that are called_____. This allows the blood to move in one direction.
Anarel [89]

Answer:

valves

The heart has four valves - one for each chamber of the heart. The valves keep blood moving through the heart in the right direction.

5 0
2 years ago
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Which of the following describes pressure in a fluid?
PtichkaEL [24]
<span>D. Pressure increases with increasing depth.

This occurs because there is more weight above you to increase the pressure.
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7 0
2 years ago
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A body travels at an initial speed of 2.5 m/s. Given a constant acceleration of 0.2 m/s 2 what is the speed of the body at time
garri49 [273]

Answer:

<u>We are given:</u>

u = 2.5 m/s

a = 0.2 m/s/s

t = 25 seconds

v = v m/s

<u>Solving for 'v':</u>

From the first equation of motion:

v = u + at

Replacing the values

v = 2.5 + (0.2)(25)

v = 2.5 + 5

v = 7.5 m/s

6 0
2 years ago
The force of gravity is twice as great on a 2-kg rock as on a 1-kg rock. Why then, dose the 2-kg rock not fall with twice the ac
Phoenix [80]

Answer:

because all objects fall at a rate of 9.8m/s²

8 0
2 years ago
A railroad car having a mass of 15 Mg is coasting at 1.5 m/s on a horizontal track. At the same time another car having a mass o
luda_lava [24]

Answer:

Explanation:

We shall apply law of conservation of momentum to know velocity after collision . Let it be v .

total momentum before collision = total momentum after collision

15 x 1.5 - 12 x .75 = ( 15 + 12 ) v

v = .5 m /s

kinetic energy before collision

1/2 x 15 x 1.5² + 1/2 x 12 x .75²

= 16.875 + 3.375

= 20.25 J

kinetic energy after collision

= 1/2 x ( 15 + 12 ) x .5²

= 3.375 J

Loss of energy = 16.875 J

This energy appear as heat and sound energy that is produced during collision .

4 0
3 years ago
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