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a) What is the magnitude of a point electric charge chosen so that the electric field because of it at a point 50 cm away has magnitude 2.0 NC¯¹ ?
(b) Get a mathematical expression for the magnetic field strength at the center of a circular coil carrying electric current?
(c) Illustrate the electronic configuration in the atomic structures of 'Ge' and 'Si' atoms. How can these be made 'P-type' and 'N- type' semi - conductors?
A cubical block of wood weighing 200g has a lead piece fastened underneath. Find the mass of the lead piece which will just allow the block to float in water. Exact gravity of wood
what is the unit of hardness?
What is potential and kinetic energy?
Two trains on separate tracks move toward one another. Train 1has a speed of 140 km/h, train 2 speed of 55.0 km/h. Train 2 blows it shorn, emitting a frequency of 500 Hz. What is t
A resistor is a two-terminal electrical or electronic component that resists an electric current by producing a voltage drop between its terminals in the accordance with ohm’s law.
Define the Newton's Law of Cooling Newton's Law of Cooling: A cup of hot chocolate has cooled from 92°C to 50°C after 12 min in a room at 22°C. a) What is the value for k (
Determine the enthalpy of vaporizaton of species: You wish to determine the enthalpy of vaporizaton of species A. You are able to find the following data: Species A has a norm
what is an atom
A drunkard is walking along a straight road.he takes 5 steps forward and 3 steps backward and so on.each step is one meter long and takes one second.there is a pit on the road 11 m
what is the meaning of heat capacity
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