2 years ago

((HURRY PLLSS)) According to Einstein, nothing in the universe can move faster than which approximate speed?

Physics

1 answer:

sveticcg [70]2 years ago

4 0

Answer:

3.0 × 108 m/s

Explanation:

the speed of light

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Say you want to make a sling by swinging a mass M of 1.7 kg in a horizontal circle of radius 0.048 m, using a string of length 0

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Answer:

Tension in the string is equal to 58.33 N ( this will be the strength of the string )

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We have given mass m = 1.7 kg

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Two points charges are brought closer together,increasing the force between them by a factor of 25.By what factor wa their separ

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Answer:

The separation between the charges was decreased by a factor of 0.2

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The Coulomb's force between two charges is given by;

$F = \frac{kq^2}{r^2} \\\\let \ kq^2 \ be \ constant\\\\F_1r_1^2 = F_2r_2^2\\\\r_2^2 = \frac{F_1r_1^2}{F_2} \\\\increasing \ the \ force \ between \ them \ by \ factor \ of \ 25\\\\(F_2 = 25F_1)\\\\r_2^2 = \frac{F_1r_1^2}{25F_1}\\\\r_2^2 = \frac{r_1^2}{25}\\\\r_2 = \sqrt{\frac{r_1^2}{25} }\\\\ r_2 = \frac{r_1}{5}$

r₂ = 0.2r₁

Therefore, the separation between the charges was decreased by a factor of 0.2.

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