ICSE − Q & A

http://www.respaper.com/preee/6285-pdf.html Mechanics Practice paper

can sm1 plz state n explain the principle of d.c. motor?
plz reply ASAP.

The density of air decreases with increase in humidity. The heavier molecules are displaced. Okay so where do the heavier molecules go?

COMPUTER APPLICATIONS QUESTION
 what will the output be if u put value 4.0 in math.ceil();?

A block and tackle system of 5 pulleys is used to raise a load of 50 kgf steadily through a height of 20 m. The work done against friction is 2000J.  Calculate the work done by the effort, efficiency of the system and  mechanical advantage. 
Pls help!

those who have concise physics tb,can anyone plz explain the 2nd experiment on pg 160...why is amp. of B max when apm. of A is min?

Do we need to draw an envelope in hindi letter?

http://www.respaper.com/dgenerationx/4362-pdf.html?cmd=conv. This two papers are good for physics. Try it.

what is the location of a coronary artery??someone pls give a proper location

Question : 2 factors on which magnitude of induced emf in secondary coil depends.
Answer: It should be turns ratio and magnitude of emf in primary coil right?
But in the 2014 pupil analysis, it is given change in magnetic flux and rate of change of magnetic flux.
What is the correct answer?