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liraira [26]
2 years ago
15

A marble rolling at a speed of 2 meters per second falls off the end of a 1-meter high table. How long will the marble be in the

air.?
Physics
1 answer:
irga5000 [103]2 years ago
8 0

<span>t^2 = 1/4.9 </span>
<span>t = 0.45 sec 
 answer:</span><span>1 - 4.9t^2 = 0 </span>
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9. A 50 kg physics i student trudges from the 1st floor to the 3rd floor, going up a total height of 13 m.
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Answer:

6370 J

Explanation:

By the law of energy conservation, the work done by the student would be the change in potential enegy from 1st floor to 3rd floor, or a change of 13 m

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2 years ago
Which statement best explains the speed of light waves as they travel from gas to solid?
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Answer:

Light waves slow down as they travel from gas to solid.

Explanation:

The speed of light is often quoted with reference to a vacuum. Light travels fastest in a vacuum and in a gas.

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8 0
3 years ago
A 0.050 kg bullet strikes a 5.0 kg wooden block with a velocity of 909 m/s and embeds itself in the block which fies off its sta
serg [7]

Answer:

The final velocity of the bullet is 9 m/s.

Explanation:

We have,

Mass of a bullet is, m = 0.05 kg

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Initial speed of bullet, v = 909 m/s

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So, the final velocity of the bullet is 9 m/s.

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