Recent content by Himal kharel

If you look the derivation it would be easy.

There is no water below cube. So pressure is exerted on all sides except bottom. Is my assertion right?

Can we float an ocean liner in bucket full of water spread to a large area?

When we put any object in a fluid it experiences upthrust. Suppose an iron cube is put in a beaker with water. It sinks and reaches bottom. When it reaches bottom and touches the base of beaker there is no water below it. Then will it experience upthrust?

A bottle of coke was taken out of refrigerator. It was then kept in a sensitive weighing balance.Its cap was opened. The initial weight was found to be 2.403 kg. After a while its weight increased to 2.423 kg. Then again it started decreasing. I repeated this experiment for many times. And the...

Is there anything such as negative tension?

I have attached a picture of window frame. If it was all about adhesion then why wouldn't engineers just coat the window frame with oil or anything water repellent instead of making drip groove.

When a aeroplane is flying due to its shape of aerofoil it gets lift. But it is common to see (as in stunt shows) that they can fly upside down too. When they do so they must experience a "downward" lift and start falling down. but they maintain a constant altitude. How can they do it?

When poured from teapot water has a tendency to run underside the spout. I googled it but could only find that it was not because of adhesion. Even if you coat the spout with paraffin wax or if you use cold water instead of hot water there is no appreciable change.this clearly suggests that no...

Is it true that bathtubs in northern hemisphere the water drains out in clockwise rotation and those in southern hemisphere in anticlockwise direction? If so then why? And in equator?

Even if you have certain horizontal velocity the rain will appear as if falling through an angle. this is because you tend to move towards the raindrops just in front of you.

Look "Transversing in rain" thread in classical physics forum. Here's a site: http://www.dctech.com/physics/features/0600.php

Of course potentiometer. Voltmeter deflects to show reading. That deflection requires electrical energy. But in potentiometer there is no deflection. No deflection means no utilization of electrical energy. This suggests that voltmeter is useless for accurate readings. Potentiometer and...

But why??

I guess i didnt explain the question properly. so here is a better explanation. Consider two cylinders with same base area but one with converging walls and other with diverging walls. let they be filled to same height. now pressure is same at the base as given by P=hdg. So the force on bottom...