1 hour is 3600 seconds. In 2 hours, it would be 7200 seconds. Divide the amount of miles by seconds. 100/7200=.01388..
Well the heat that is needed to raise the temperature of 10g of water by 17oC is 7
There should be a small amount of play in the wheel when the steering is locked. Gently pull the key from the ignition while you slowly jiggle the steering wheel back and forth. If this is the cause of the problem, the key should come out after a little effort.
Explanation :
It is given that,
In the given figure all the three resistors are in series.
Current flowing in the circuit, 
Voltage, 
We know that in series circuit the current flowing in all resistors is same.
Using Ohm's law, we get:



Hence, this is the required solution.
One small reason would be renewable resources can be used more and never lose supply on the other hand non-renewable resources will one day run out