victoria1831

05.07.2019 • 

Physics

Identify the statement that correctly represents how light travels. light can travel in a vacuum, and the speed at which it travels decreases if the source is moving away. light cannot travel through a vacuum because it travels slower when the light source is moving. light travels at a constant speed through a vacuum, even if the light source is moving. light travels at different speeds when the light source is moving in the same direction and cannot travel in a vacuum.

Ответ:

Jakeandjenn21

07.07.2020

Physics

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Light travels at different speeds when the light source is moving in the same direction and cannot travel in a vacuum.

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Ответ:

sarah8479

26.07.2020

Physics

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To calculate the number of sig figs
1.  Count ALL nonzero numbers
2.  If the zero is between 2 numbers, count it
3.  If in a decimal the zero is at the end, count it
4.  In a decimal all the zeros before the first nonzero number are placeholders and don't count them
5.  In a number greater than zero all zeros AFTER the last nonzero number are placeholders and don't count them.

A - 5
B - 2
C - 3
D - 1
E - 4

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