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What is the speed of light in a vacuum?

a) v=3⋅108 m/s
v equals 3 times 10 superscript 8 baseline m per s

b) v=2⋅108 m/s
v equals 2 times 10 superscript 8 baseline m per s

c) c=2⋅108 m/s
c equals 2 times 10 superscript 8 baseline m per s

d) c=3⋅108 m/s

The correct answer is d) c=3⋅108m/s. The speed of light in a vacuum is approximately 299,792,458 meters per second or approximately 3 times 10 to the power of 8 meters per second. This is denoted by the symbol "c" in physics equations.

The correct answer is d) c=3⋅108 m/s, which means the speed of light in a vacuum is 3 times 10 raised to the power of 8 meters per second. This is a fundamental constant in physics and represents the maximum speed at which information or signals can travel through space. It is denoted by the symbol "c" and is approximately equal to 299,792,458 meters per second in exact value. To find the answer, you can refer to reliable scientific sources or physics textbooks that provide information on the speed of light in a vacuum.

The correct answer is d) c=3⋅108 m/s. The speed of light in a vacuum is approximately equal to 3 times 10 to the power of 8 meters per second.