Answer:
D.) The direction of the helicopter's motion will change
D. the direction of the helicopter's motion will change
Explanation:
When the fan pushes on the helicopter to the right, the direction of the helicopter motion must change as it flies past it.
Since the problem suggest that the fan must push the helicopter towards the right, it will deviate from its course.
learn more:
Newton's law brainly.com/question/11411375
#learnwithBrainly
11.7
The pH is the negative logarithm of the concentration of H+ ions. If the concentration is 2×10-¹² the the pH will be -log(2×10-¹²) which is 11.698 which can be round up to 11.7.
Answer:DE2