brianna8739
24.09.2019 •
Physics
Why does the redshift seen in the spectral lines from other galaxies support the big bang theory? o a. it is proof that energy and matter are quantized. o b. it is evidence that the universe is expanding. o c. it indicates that there is a lot of helium in the universe. o d. it shows that lengths contract as velocities near the speed of light.
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Ответ:
answer:
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explanation:
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Ответ:
Explanation:
Given:
Charge = q
Electric field strength =
weight of the droplet = mg
The charge is suspended motionless. This is because the electric force on the charge is balanced by the weight of the droplet.
electric force on charged droplet,
This is balanced by the weight,
Equating the two: