The electric force between two charged vinyl balloons is 3.0 × 10-3 newtons. If the distance between them is 6.0 × 10-2 meters a
1 answer:
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Answer:
The voltage across the capacitor is 1.57 V.
Explanation:
Given that,
Number of turns = 10
Diameter = 1.0 cm
Resistance = 0.50 Ω
Capacitor = 1.0μ F
Magnetic field = 1.0 mT
We need to calculate the flux
Using formula of flux
Put the value into the formula
We need to calculate the induced emf
Using formula of induced emf
Put the value into the formula
Put the value of emf from ohm's law
We know that,
We need to calculate the voltage across the capacitor
Using formula of charge
Put the value into the formula
Hence, The voltage across the capacitor is 1.57 V.
Answer:
v' = -18 m/s
Explanation:
- Assuming no external forces acting during the collision, total momentum must be conserved, as follows:
- The initial momentum can be expressed as follows (taking as positive the initial direction of the ball):
- The final momentum can be expressed as follows (since we know that v'b is opposite to the initial vb):
- If we assume that Mc >> mb, we can assume that the car doesn't change its speed at all as a result of the collision, so we can replace V'c by Vc in (3).
- So, we can write again (3) as follows:
- Replacing (2) and (4) in (1), we get:
- Simplifying, and rearranging, we can solve for v'b, as follows:
, which is reasonable, because everything happens as if the ball had hit a wall, and the ball simply had inverted its speed after the collision.
<span>The potential difference Vwc between the wire and the cylinder produces an electric field of 2.00Ã104 volts per meter at a distance of 1.20 centimeters from the axis of the wire is 1160 V</span>
In case of a long wire, electric field E is inversely proportional to r
Therefore E= x/r or x = E*r
Now,