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saul85 [17]
3 years ago
15

Science fair project

Physics
2 answers:
victus00 [196]3 years ago
8 0

For Science fair project you can do convection current

Explanation:

Show how to do the process

and then make a model to demonstrate

Materials required:

Potassium Permanganate,beaker,bunsen burner,water and retort stand

kondaur [170]3 years ago
5 0

Answer:

Explanation:

You can make a projector using convex lens and a mobile phone back of it

For more details search in you. tubeyou will get videos based on this

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A car speedometer has a 6% uncertainty. What is the range of possible speeds when it reads 100 km/h?
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3 0
3 years ago
A 500 kilogram marlin and a 20 kilogram salmon are swimming at the same velocity. How does the momentum of the two fish compare?
ElenaW [278]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.

Below are the choices that can be found from other sources:

A. The marlin has more momentum. 

<span>B. The salmon has more momentum. </span>

<span>C. Both have the same momentum. </span>

<span>D. Both have no momentum.
</span>
Velocity is speed. Momentum is the product of velocity and mass. Because the Marlin has a much greater mass that means that it's momentum would also be greater. 

<span>Lets look at this. momentum = mass x velocity </span>

<span>lets say that velocity for both fish is at 2 meters per second </span>
<span>Marlin : momentum = 500 x 2 = 1000 </span>
<span>Salmon : momentum = 20 x 2 = 40 </span>

<span>Therefore the answer is A</span>

6 0
3 years ago
Read 2 more answers
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