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zmey [24]
3 years ago
9

changes in which the form or shape of a substance changes but the substance keeps its identity are called

Physics
1 answer:
sveta [45]3 years ago
5 0
The answer is physical changes....
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Which process generates energy in the Sun?1) nuclear fusion2) nuclear fission3) chain reaction4) transmutation
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1) nuclear fusion

During nuclear fusion, the high pressure and temperature in the sun's core cause nuclei to separate from their electrons. During this process, radiant energy is released.

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someone made a copy of an analog wave in a digital wave compare the copies with the original waves and explain which type of wav
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Answer: Analog transfer information quicker, example electromagnetic waves which are used in our modern day phones.

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Exercício:
zysi [14]

Answer:

a

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Which of the following is a correct equation for total energy?
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William WangHomework #33 Regents Review (3)0989Assignment Mode : Open (Time On Task) 9 of 25 ListenDuring a collision, an 84-kil
Lemur [1.5K]

Answer:

1.7\cdot 10^3 N

Explanation:

The impulse theorem states that the product between the force and the time interval of the collision is equal to the change in momentum:

F \Delta t = m \Delta v

where

F is the force

\Delta t is the time interval

m is the mass

\Delta v is the change in velocity

Here we have

m = 84 kg

\Delta t = 1.2 s

\Delta v = 24 m/s

So we can solve the equation to find the force:

F= \frac{m \Delta v}{\Delta t }=\frac{(84 kg)(24 m/s)}{1.2 s}=1680 N \sim 1.7\cdot 10^3 N

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3 years ago
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