This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Explain in terms of buoyant force how a fish is able to rise and sink in water. Contrast this to the ... (Read 26 times)

londonang

  • Hero Member
  • *****
  • Posts: 540
on: Jul 29, 2018
Explain in terms of buoyant force how a fish is able to rise and sink in water. Contrast this to the way a submarine rises and sinks.
 
  What will be an ideal response?

Question 2

Why will a helium-filled balloon rise in air while an air-filled balloon sinks?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

todom5090

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 29, 2018
Answer to Question 1

Saved me massive time.

Answer to Question 2

Answer: Both balloons displace air and have a buoyant force that depends on their volumes. If buoyancy were the only force acting, they both would rise. But there's weight. The air-filled balloon is simply heavier than the air it displaces, thus its weight is greater than the buoyant force, and it sinks. It is heavier because the stretched balloon fabric compresses the air within. Likewise for the helium, but it is so low in density that even when compressed it is still lighter than the air it displaces.


londonang

  • Member
  • Posts: 540
Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

debra928

  • Member
  • Posts: 342
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Fish Fish
Super Mario, Flying Fish Super Mario, Flying Fish
The IPCC projects sea level rise The IPCC projects sea level rise
Fish and chips Fish and chips
Introduction of Water to Mantle Rock Introduction of Water to Mantle Rock
fish skeletal fish skeletal
Video: Hershey Chase Experiments

For a complete list of videos, visit our video library