For the convenience of solving the problem, first we translate the height at which the plane flies from kilometers to meters.
Since 1 kilometer is 1000 meters, we get:
5 * 1000 = 5000 meters.
We write the value of the vertical temperature gradient. It is equal to 0.6 ° C per 100 meters.
This means that the air temperature decreases by a given value when rising for every 100 meters.
In this case, we get:
5000 * 0.6 ° C / 100 = 30 ° C.
Since this number shows the temperature difference, then overboard will be:
18 – 30 = -12 ° C.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.