A bird sitting on a naked wire carrying current feels quite
safe, but when the wire between his feet is cut and joined
by a very long loop of wire, the bird dies. Why?
An ice-box is built of wood 1.75 cm thick, lined with cork
3 cm thick. If in the steady state the temperature of the
inner surface of the cork is 0 ºC and that of the outer
surface of wood is 12 ºC, what is the temperature of the
wood-cork interface? The thermal conductivities of wood and
cork are 0.2 W/m-K and 0.04 W/m-K respectively
48
I want to prepare a frequency generator. the specifications
i.e. output requirements are 12V, 1-10A & frequency upto 1K
to 5K. Please, inform me with proper circuit dig. & the
component values.
61
while climbing a hill or mountain we bend forward.
give a scientific expalantion in a simple way
64
What is the meaning of ‘steady state’ in the context of
transmission of heat?
56
i need the working and properties of the sextent and all
the objects and much more about sextent..
52
the question from which area of physics in ONGC Written
examination in physics can we expect more?
73
what is the difference between opticalzoom,dizitalzoom and
smartzoom
when does one exert greater pressure on ground during
walking or standing? why ?
what happends to the period of a simple pendulum taken into
a deep mine
65
Mercury thermometer is constructed as shown in Figure
The capillary tube has a diameter of 0.004 cm, and the bulb
has a diameter of 0.250 cm.
neglecting the expansion of the glass, find the change in
height of the mercury column
that occurs with a temperature change of 30.0 °C.
73
how much mercury overflows when a glass vessel filled to
the brim with 50 cubic centimeter of mercury 15°C is heated
to 75°C of glass?
70
why does a drop of water thrown into a hot frying pan jump
around?
What is the avarege speed of people fencing like at the
olympic games. (sorry for the misspelled words)
65
the force of attraction of earth on a man, who is inside
the artificial satellite, is Zero
state whether the above statement is correct, if not
correct please give the correct answer
115
WHY IS MAGNETIC NEEDLE POINTD?
47
I just want to convert the voltage into current i.e.
suppose I have 750V & 1A AC power then I want to convert it
into 12V & 62A DC power only difficulty is that I don't
want to use the tranceformer. Simply to say, I want to make
the step-down without using tranceformer. Please, give me
some ideas.
And also I want the relation between Magnetic Induction &
Weight of the body can be levitated. Or I can say, how much
of magnetic induction requires to lift 500gms weight?
I am heartily thankful to you.
71
How to prepare for the post State bank of india clerk
personal interview ?
Did you received any Funny E-Mails from your Friends and like to share with rest of our friends? Yeah!! you can post that stuff 
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