Explanation:
KE is directly proportional to the square of velocity / speed.
if speed is 2 times (doubled) the KE will be
= 4 times the original KE
State ohm’s law Q.34.7
1 answer:
Ohm's law states that:
Explanation:
Ohm's law states that in a conductor, the potential difference across the conductor is directly proportional to the current flowing through it. Mathematically,
where
V is the potential difference
I is the current
The constant of proportionality is called resistance (R), and it gives a measure of "how much the conductor opposes" to the flow of current. Therefore Ohm's law can be rewritten as
where R is the resistance. By rewriting the equation as
we see that the larger the resistance, the lower the current in the conductor.
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Answer:31.62 m/s
Explanation:
Given
mass of body
Pull on chain is
Pull get smaller at the rate of
Net Upward Force
net acceleration
but g is acting downward
using
here initial velocity is zero
The separation between them is
Concept :
If the force increases, distance between charges must decrease. Force is indirectly proportional to the distance squared.
Given,
Two point charges are brought closer together, increasing the force between them by a factor of 20.
Original force is
F = -------- ( 1 )
Here, are charges and r is the distance between them
New force F' = ----------- (2 )
Divide ( 1 ) and ( 2 )
=
20 =
r' =
Given that force between them are increasing and therefore distance between them decrease by
Learn more about two point charges here : brainly.com/question/24206363
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