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Bogdan [553]
2 years ago
8

A bullet with a mass of 0.1 kg is travelling at

Physics
1 answer:
mel-nik [20]2 years ago
6 0

The block with the bullet lodged in the block is now travelling at 2.133 m/s.

<h3>What is momentum conservation principle?</h3>

When there is no external force acting on the system, the momentum remains conserved.

For inelastic collision, after collision both objects travel with common speed.

m1u1 + m2u2 =(m1 +m2)v

Substitute initial velocity of bullet u1 =320 m/s , initial velocity of block u2 =0, mass of bullet m1 = 0.1 kg and mass of block m2 = 14.9 kg.

Solve for the final velocity of bullet,

0.1 x 320 + 14.9 x 0 = (0.1 +14.9) x v

v = 2.133 m/s

Thus, the  block with the bullet lodged in block now travelling at 2.133 m/s.

Learn more about momentum conservation principle.

brainly.com/question/14033058

#SPJ1

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The record time for a Tour de France cyclist to ascend the 1100-mm-high Alpe d'Huez is 37.5 minmin. The rider and his bike had a
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Answer:

1945.6 W

Explanation:

We are given that

Height,h=1100 m

Time,t=37.5 min=37.5\times 60=2250 s

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Power,=P'=\frac{W}{t}=\frac{mgh}{t}=\frac{65\times 9.8\times 1100}{2250}=311.4 W

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Efficiency =25%

Therefore,Power,P'=\frac{311.4}{0.25}=1245.6 W

Total metabolic power=P+P'=700+1245.6=1945.6 W

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3 years ago
What is centripetal force and elastic force
snow_tiger [21]

Answer:

centripetal force is a net force that acts on an object to keep it moving along a circular path and elastic force acts to return a spring to its natural length

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3 years ago
15. Two like charges: A. Attract each other B. Repel each other C. Must be neutrons D. Neutralize each other
seropon [69]

Answer:

B. Repel each other

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On the other hand, if the charges are opposite, ie  negative charge and positive charge, they will attract each other.

B. Repel each other

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A charge of 25.0 nc is placed in a uniform electric field that is directed vertically upward and that has a magnitude of 4.00×10
MakcuM [25]
Hello!

Work is equal to the change in KE or the negative change in PE. So if e field is directed vertically upward or in positive y direction and our charge is positive it’s going to move in direction of e field so then the work done by the e field is negative because it is losing potential energy the farther it moves upward away from field. Work=qed which is charge*e field*distance travelled.

Hope this helps! Any questions please ask! Thank you!!
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