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 Arab Emirates
0%
6%
93%
0%
15
flagCanada
7%
7%
85%
0%
14
flagAustralia
0%
7%
84%
7%
13
flagthe United States
4%
5%
82%
3%
152
flagthe United Kingdom
8%
7%
80%
4%
212
flagMalaysia
10%
10%
80%
0%
10
flagRepublic of Ireland
7%
14%
78%
0%
14
flagItaly
17%
0%
82%
0%
17
flagPakistan
15%
7%
76%
0%
13
flagFrance
12%
4%
75%
8%
24
flagIndia
9%
7%
72%
8%
99
flagPoland
9%
12%
70%
5%
6761
flagAustria
10%
10%
70%
10%
10
flagthe Netherlands
15%
7%
69%
7%
13
flagUnknown
10%
13%
68%
7%
483
flagGermany
11%
7%
66%
11%
69
flagNorway
25%
8%
50%
16%
12
flagthe Philippines
23%
23%
30%
23%
13

Gender

men69%
women58%
thermodynamic free energy
11%
12%
specific heat capacity
11%
20%
speed of light
69%
59%
Coulomb, unit of the electric charge
7%
7%

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What is "c" in E=mc^2?
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Author: Paweł Kołodziejczyk
Illustration: DonkeyHotey
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