Answer:
Explanation:
The resistance of a wire is given by:
where
is the resistivity of the material
L is the length of the wire
A is the cross-sectional area of the wire
For the wire in this problem:
L = 7.0 m
r = d/2 = 0.07 cm = 0.0007 m, so the area is
Solving for R,
The resistance of the circuit is
Explanation:
We can solve the problem by applying Ohm's law, which gives us the relationship between current, potential difference and resistance in a circuit:
where
V is the potential difference
R is the resistance
I is the current
For the circuit in this problem,
V = 12.6 V
I = 25.4 A
Re-arranging the equation, we can solve for the resistance:
Learn more about current and potential difference here:
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Answer:
(2) −1 e
Explanation:
A quark is the lightest elementary particles which form hadron such as proton and neutron. A quark has fractional charge.
Up, charm and top quarks have charge where as down, strange and bottom quarks have
charge.
The antiparticle of up quark is antiup quark and has charge charge.
The antiparticle of down quark is antidown quark and has charge charge.
An antibaryon is composed of two anti-up quark and one anti-down quark.
Net charge of the anti-baryon is:
Thus, antibaryon has -1e charge.