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A simple inclined plane Join a spring balance to a toy car or roller skate and pull it up a slanting board (inclined plane). Note the force needed to move the car and compare i
a picture frame is hanging by two verticle strings the tention in the string are 3.8N and 4.4N find the weight of the picture frame
A ball moving with speed v collides with a horizontal smooth surface at an angle ? with normal to surface in the figure. If coefficient of restitution is ‘e’ , then find VELOCITY a
What is Equipotential Surface Equipotential Surface - surface of constant potential. No work is required in moving charges with such a surface. Electric fields are perpend
When is the combination of cells advantageous and why? (Mar 2009) What do you mean by internal resistance of a cell? Write down the value of internal resistance of an ideal cell
a beam of electron is incident on barrier 6eV high and 0.2 nm wide. find the energy in eV these should have if 1% of them are to get through the barrier.
Q. What is direction of the current? The path of the magnetic field at the centre of a horizontal current-carrying loop of wire is straight downward. The magnetic field is affe
The current–voltage characteristic curve for a semiconductor diode as a function of temperature T is given by the equation i = i0(eev/kt - 1) Here the ?rst symbol e represen
Q. An aircraft having awing span of 20.48 m flies at a speed of 40 ms -1 . If the vertical component of the earth's magnetic field is 2 X 10 -5 T, compute the emf induced between
Penetration power of proton is: (1)More than electron (2)Less than electron (3)More than neutron (4)None Ans:(2)Less than electron
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