The resistance is 4 times the resistance of the first wire. the formula is R = p*l/A with p being resistivity, l length and A area. So if you double length and half area, which botv result in more resistance, you get p*2/0.5 or 4 (p can be abandoned because it is the same. We take standard length and area as 1)
Answer:
Diameter of Wire = 4.5 mm
Explanation:
First, we need to find the fractional part of the reading. The fractional part o the reading can be given by the following formula:
Fractional Part = Circular Scale Reading x Least Count
where,
Circular Scale Reading = 50
Least Count = 0.01 mm
Therefore,
Fractional Part = (50)(0.01 mm)
Fractional Part = 0.5 mm
Now, the diameter of the wire can be given by using the following formula:
Diameter of Wire = Linear Scale Reading + Fractional Part
Diameter of Wire = 4 mm + 0.5 mm
<u>Diameter of Wire = 4.5 mm</u>
Answer:
d) F
Explanation:
According to columb's law:
"The magnitude of electrostatic force between two charges is directly proportional to the product of magnitude of two charges and inversly proportional to separation between them."
If q₁ and q₂ are magnitude of two charges, d is distance between them and k is dielectric constant, then force F is given by
According to this force exerted on point charge Q is same as that of 3Q, so force point 3Q charge experience is also F
Answer:
US Fish and Wildlife Service
Explanation:
The federal agency that helps foreign governments with international conservation efforts are the US Fish and Wildlife Service. This organization focus includes enforcing federal wildlife laws, protecting endangered species, manage migratory birds, restoring nationally significant fisheries; conserving and restoring wildlife habitat, such as wetlands, and even helping foreign governments with their international conservation efforts.
Answer:
you can't
Explanation:
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