Humans should be concerned with continental drift and plate tectonics because these forces have a major impact on the environment and also lead to major natural disasters. Shifts in tectonic plates lead to earthquakes which can also cause things like typhoons or tsunamis. Therefore, begin knowledgeable about the locations of fault lines and areas with the high potential for natural disasters as a result of shifting plates is very important.
The water leval in the tub will stay the same due to the law of water replacement.
Answer:
T = 4517.48 N
Explanation:
It is given that,
Average power of the motor, 
Speed of the boat, 
Force or tension acting on the motor at this point is given by :



T = 1916.08 N
Average power generated by the engine, 
Force or tension acting on the motor at this point is given by :



T = 6433.56 N
So, the tension in the tow rope that is pulling the skier is, T = 6433.56 N - 1916.08 N = 4517.48 N
Wheel chair ramp, slide, and staircase