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dlinn [17]
4 years ago
5

What does it mean to say that momentum is conserved?

Physics
1 answer:
Sindrei [870]4 years ago
4 0

Answer:

C. The total momentum of a set of objects is the same before and

after a collision.

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When a block of ice at zero degrees Celsius melts, the ice A) absorbs energy from its environment. B) releases energy to its env
Mariulka [41]

Answer: Option (E) is the correct answer.

Explanation:

Latent heat is defined as the amount of heat required by per mole of a substance in order to change its state.  

And, latent heat of freezing (fusion) is defined as the energy required for the phase change between a liquid and a solid without any change in their temperature.

Therefore, at zero degrees Celsius energy absorbed by the ice will be consumed in breaking the bond between the water molecules held together in the solid state.

Thus, we can conclude that when a block of ice at zero degrees Celsius melts, the ice absorbs energy but does not change its temperature.

3 0
3 years ago
The device which is used to increase or decrease the voltage of electricity is called​
Tems11 [23]

Answer:

Transformer

Explanation:

Transformers can increase (step up), or it can decrease (step down) voltage.

8 0
4 years ago
A rock is dropped into a well. If you hear a splash 14 seconds later what was its speed
grigory [225]

Answer:

14 seconds

Explanation:

because you dropped it and it takes 14 seconds

4 0
3 years ago
A powerful missile reaches a speed of 5 kilometers per second in 10 seconds after its launch. What is the average acceleration o
bixtya [17]

Answer:

D

Explanation:

5 Km=5000m

so Δv=5000 m/sec

a=Δv/Δt

=5000/10

a=500 m/sec²                 as 500÷1000=0.5 Km

a=0.5 km/sec²

so D is the right answer.

3 0
3 years ago
Define in own words.
pickupchik [31]

Complementary is essentially two things that are "combined" with one another (complement one another) to make a bigger piece or make it better.

5 0
4 years ago
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