Which statement describes the relationship of voltage and current?
2 answers:
By definition, of the law of ohm, we have to:
Where,
V: voltage
I: current
R: resistance
Therefore, we have that the relationship between voltage and current is proportional.
The proportionality constant for this case is the resistance.
For the current we have:
The proportionality constant for this case is the inverse of the resistance.
Answer:
A statement that describes the relationship of voltage and current is:
Voltage is directly proportional to current because I = V / R
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Answer:
48.16 %
Explanation:
coefficient of restitution = 0.72
let the incoming speed be = u
let the outgoing speed be = v
kinetic energy = 0.5 x mass x
- incoming kinetic energy = 0.5 x m x
- coefficient of restitution =
0.72 =
v = 0.72u
therefore the outgoing kinetic energy = 0.5 x m x
outgoing kinetic energy = 0.5 x m x
outgoing kinetic energy = 0.5184 (0.5 x m x )
recall that 0.5 x m x is our incoming kinetic energy, therefore
outgoing kinetic energy = 0.5184 x (incoming kinetic energy)
from the above we can see that the outgoing kinetic energy is 51.84 % of the incoming kinetic energy.
The energy lost would be 100 - 51.84 = 48.16 %