Quiz - Physics - Buoyancy

[Pedro Burrito]

From the PADI Dive Theory Exam.

If an object is positively buoyant in salt water, what will happen to the object when it's placed in fresh water?

I will post a daily question from my exams to help newer divers and to encourage more experienced divers to interact gracefully and helpfully with the newer divers.

Reminder - this is a post in the Basic Forum and it is a green zone. Please be nice and on topic.

Thank you for your patience while we try to give people something to discuss other than Covid-19 and/or Politics. I will post the answer covered by the spoiler tag later today.

 

[Vitesse2l]

Thank you Pedro B.

I'm starting to look forward to your daily question!

 

[tursiops]

Thank you Pedro B.

I'm starting to look forward to your daily question!

In some ways, the distribution of answers and comments are more informative than the questions!

 

[TMHeimer]

In some ways, the distribution of answers and comments are more informative than the questions!

Agree. I'm surprised some voted wrongly on this one. Very clear question.

 

[Pedro Burrito]

Spoiler: Answer

a. The answer cannot be determined from the information given.

 

[gamon]

It's like a quadratic equation where you are trying to solve for more than 1 unknown variables.

 

[Norwegian Cave Diver]

My view was - what is more buoyant than salt water? So the fluid must be less buoyant than salt water.

 

[tursiops]

My view was - what is more buoyant than salt water? So the fluid must be less buoyant than salt water.

So you voted (b)?

 

[tridacna]

Cannot see the full question on my iPhone...so insufficient info. Easy answer.

 

[John C. Ratliff]

I will not give away the answer, but it has to do with the density of the fluid. The fluid with the greater density will create more buoyancy upon the object.

SeaRat