Use the following figure to answer the question:
-It would be easier to pull evacuated Magdeburg hemispheres apart when they are
A)held upside down.
B)at sea level.
C)20 km beneath the ocean surface.
D)20 km above the ocean surface.
E)none of these

Question

Use the following figure to answer the question: 
-It would be easier to pull evacuated Magdeburg hemispheres apart when they are
A)held upside down. 
B)at sea level. 
C)20 km beneath the ocean surface. 
D)20 km above the ocean surface. 
E)none of these

Quizplus · Accepted Answer

At 20 km above the ocean surface, the atmospheric pressure is lower, reducing the force holding the hemispheres together, making them easier to pull apart.

Use the Following Figure to Answer the Question