Answer:
The potential drop across the cable is 38 volts.
Explanation:
Given that,
Length of the copper cable, l = 140 km
Diameter of the cable, d = 11 cm
Radius, r = 5.5 cm
We need to find the potential drop across the cable. It can be calculated using Ohm's law. It is given by :
R is the resistance
We know that the resistance is given by :
Voltage becomes :
So, the potential drop across the cable is 38 volts. Hence, this is the required solution.
Answer:
The answer is C. Abundant natural resources
Explanation:
A is wrong because humans cause pollution, B is wrong because we use natural resources and their supply would deteriorate, and D is wrong because we already break down rainforests and they are getting smaller.
When The Earth Rotates 360 Degrees It Takes Approximatly A. 23 Hours And 56 Minutes.