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sasho [114]
3 years ago
7

A variable that is not changed.

Physics
1 answer:
AleksAgata [21]3 years ago
5 0

Answer:

A controlled variable does not change during a experiment

Explanation:

it's c

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I think the answer is c but I’m not sure
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Explain what happens to the particles in a substance during a physical change.
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During Physical Change there would be a re-arrangements of atoms or molecules, changes of the arrangement may be change in the distance between atoms or molecules, change in the crystal form, .....etc 

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5 0
3 years ago
Read 2 more answers
momentum A proton interacts electrically with a neutral HCl molecule located at the origin. At a certain time t, the proton’s po
arlik [135]

Answer:

\ m/s

Explanation:

F = Force =

m = Mass of proton = 1.7\times 10^{-27\ kg

t = Time taken = 2\times 10^{-14}\ s

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v=u+at\\\Rightarrow v=+\times 2\times 10^{-14}\\\Rightarrow v=+\times 2\times 10^{-14}\\\Rightarrow v=+\\\Rightarrow v=\ m/s

The velocity of the proton is \ m/s

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3 years ago
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