1. A contact lens and a sewing needle are pretty much the same weight. Why is...

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Physics

1. A contact lens and a sewing needle are pretty much the sameweight. Why is one of these a lot more comfortable resting on youreye? Ah! ?? (everyday life)
2. Write what you remember about Pascal's principle withoutreading anything. Now go see how right you are!
3. How many 1/4 pound burgers do we need to stack on a tablethat is 1 meter by 1 meter to be the equivalent of 1 atmosphere?How many starving pygmy vampire bats would this feed for a lightyear?
4. A pipe contains an incompressible fluid. At some point alongits path the pipe doubles in diameter. How does this affect thevelocity of the fluid inside?
5. Picture of a cubic meter of water. How much do you think itweighs? Find the density of water then find the mass of a cubicmeter of water and then multiply by gravity to see how close youwere!
6. Do the same thing for a backpack of gold.
7. Which direction does a buoyant force point?
8. Compare the buoyant force and the weight for an object thatsinks and floats.
9. What does the buoyant force for a submerged object dependon?

Answer & Explanation Solved by verified expert

3.6 Ratings (473 Votes)

1 We know that pressure is inversely proportional to are ofcontact Since the needle has less area its pressure on the eyewill be more and due to more area of the lens its pressure on theeye is See Answer

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