Why is a man hit harder, when he falls on a paccafloor than when he falls on sand from the same height ?1 2884
Why us steel more elastic than rubber ?5 8418
Why a pen used for writing with ink is always split as its pointed end?1 2496
Why the height of the mercury column is affected by the change in temperature ?2 4701
Why us the height of mercury column unaffected by the difference in the value of gravity at the same place?3 3382
Why is the height of mercury column affected by a tube having a very narrow bore ?1 3300
Why dies a small quantity of air introduced into the top of the barometer tube depress the level of mercury ?3 2958
Why ate some clocks slow in summer and fast in winter ?4 13585
Why are glaciers formed ?1 2689
Why is a ship loaded with a ballast(bottom load) ?1 3056
Why does water boil at 100oC ?1 3066
Why the objects which ate perfect reflectors or transparent, not so easily visible ?2 2717
Why does the reflection of objects seen on a cheap looking glass give distorted images ?1 2944
Why is diamond so bright ?1 3369
Why is mercury used in thermometers rather than water?
Explain what is cardiac output?
What is meant by common potential?
sound frequencies below 16 hertz are usually referred to by scientists as:
Does water drain counterclockwise in the northern hemisphere and clockwise in the southern hemisphere?
explain principle of potentiometer
What is the advantage of fixed pulley?
What is ntu in thermodynamics?
What are isotopes?
Can i work 240 volt 1400 watts 1 ton ac with 24 volt battery..! How..?
Explain planck’s hypothesis or what the postulates of planck’s quantum theory? (Or) what are the assumptions of quantum theory of black body radiation? : quantum physics
Explain what is h1n1?
Does weight affect how far you jump?
What is the loudness?
Explain what is relation between magnetic and electricity and why?