Author Question: If one of the pair of Magdeburg hemispheres were fastened to a strong tree, the force needed by a ... (Read 113 times)

JGIBBSON · **on:** Jul 29, 2018

If one of the pair of Magdeburg hemispheres were fastened to a strong tree, the force needed by a single party to pull them apart would be

A) half as much.
B) the same.
C) twice as much.
D) none of the above

Question 2

Consider two mercury barometers, one with twice the cross-sectional area of the other. Neglecting capillarity, compared with the wider tube, mercury in the smaller tube will rise

A) to the same height.
B) twice as high.
C) four times as high.
D) more than four times as high.
E) none of the above