Question: 7. Watch this video Video (7) Link : https://youtu.be/x82fgxj-cIk Question : As the weighted balloon descends deeper and deeper, does the buoyant force on it

7. Watch this video

Video (7) Link : https://youtu.be/x82fgxj-cIk

Question : As the weighted balloon descends deeper and deeper, does the buoyant force on it increase, decrease, or remain the same? Defend your answer.

8. Watch this video

Video (8) Link : https://youtu.be/wrtI8A4tP-k

Question : Consider the piece of iron toppling from the pan where it sinks to the bottom. What happens to the water level at the side of the tank? Does it rise, fall, or remain unchanged? Think about that.

9. Watch this video

Video (9) Link : https://youtu.be/5rTVo_eb10o

Question : With a proper piston-and-cylinder arrangement you can multiply your input force by 50. Why doesn't this similarly multiply energy? What is your explanation?

10. Watch this video

Video (10) Link : https://youtu.be/m-85Rp3FTdc

Question : Atmospheric pressure against a common window produces an enormous force on the window. Why doesn't this force break the window?

11. Watch this Video

Video (11) Link : https://youtu.be/rjELz7BNGuM

Question : Upon which is buoyant force of the air greater, on an elephant or on a common helium-filled party balloon? Defend your answer.

12. Watch this video

Video (12) Link : https://youtu.be/YKkYAPA04ZY

Question : Consider this pair of empty soda-pop cans suspended by strings. There's a small space between them. If you blow air between the cans, will they move apart, move toward each other, or remain as they are? Defend your answer.

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