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3 years ago

Which statement does not support the explanation for how planets formed by accretion of particles?

Physics

2 answers:

navik [9.2K]3 years ago

7 0

It has to be the second answer

juin [17]3 years ago

3 0

Answer: Frequent collisions turned rocks to dust, pushing the dust deeper into space.

Explanation:

Particles accumulate due to force of gravity in the accretion process. With increase in mass, gravity increases which pulls in more mass. This leads to formation of of bigger massive objects. The frequency of collisions between particles increases. Particles collide and stick with each other. This generates large amount of heat.This is how, planets and other celestial bodies are formed. As gravity pulls the nebular disk inward, the disk spins faster. Particles rotate in the same direction as the nebular disk.

Thus, the statement which does not support formation of planets through accretion process is: Frequent collisions turned rocks to dust, pushing the dust deeper into space.

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3 years ago

A capacitor in a single-loop RC circuit is charged to 85% of its final potential difference in 2.4 s. What is the time constant

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Answer:

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Explanation:

From the question we are told that

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The mathematically representation for voltage potential of a capacitor at different time is

$V = V_o - e^{-\frac{t}{\tau} }$

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$V_o$ is the potential of the capacitor when it is full

So the capacitor potential will be 100% when it is full thus $V_o =$ 100% = 1

and from the question we are told that the at the given time the potential of the capacitor is 85% = 0.85 of its final potential so

V = 0.85

Hence

$0.85 = 1 - e^{-\frac{2.4}{\tau } }$

$- {\frac{2.4}{\tau } } = ln0.15$

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3 years ago

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