If a fish experiences an a of 9.8m/s2 over a period of 1.84s, what was the 4v?
1 answer:
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Answer with Explanation:
We are given that
Length of wire 1=
Length of wire 2=
Resistivity of copper wire=
Resistivity of aluminum wire=
Wire 1=Copper wire
Wire 2=Aluminum wire
Diameter of both wires are same and resistance of both wires are also same.
We know that
Resistance =
When diameter of wires are same then their cross section area are also same .
When resistance and area are same then the length of wire depend upon the resistivity of wire .
The length of wire is inversely proportional to resistivity.
When resistivity is greater then the length of wire will be short and when the resistivity is small then the length of wire will be large.
Therefore,
Hence, the length of wire 1 (copper wire) is greater than the length of wire 2 (aluminum).
Answer:
Explanation:
The force needed to pull up the backpack up increases as the backpack gets higher because the force of gravity needs to be encountered by the tension of the string. According to the formula to calculate the tension, assuming both are equal , the force of tension increases as the angle(with respect to horizontal axis) decreases. It is not possible to pull the rope hard enough because there will be no force in the y direction to counter the Fg; therefore, infinite force is needed.