What is "c" in E=mc^2?

thermodynamic free energy
specific heat capacity
speed of light
Coulomb, unit of the electric charge
In words, energy equals mass mul­ti­plied by the speed of light squared.

Answers distribution

thermodynamic free energy
specific heat capacity
speed of light
Coulomb, unit of the electric charge
answers
flagthe United States
4%
3%
84%
3%
106
flagCanada
7%
7%
84%
0%
13
flagthe United Kingdom
8%
6%
78%
4%
101
flagGermany
9%
4%
70%
12%
41
flagPoland
10%
13%
68%
5%
3271
flagIndia
7%
9%
67%
13%
53

Gender

men71%
women53%
thermodynamic free energy
10%
14%
specific heat capacity
9%
22%
speed of light
71%
54%
Coulomb, unit of the electric charge
8%
8%

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What is "c" in E=mc^2?
297
78%

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Author: Paweł Kołodziejczyk
Illustration: DonkeyHotey
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