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Give reason that ultrasonics not be produced by passing high frequency alternating current by a loud speaker
At these high frequencies, inductive reactance is so high where is no current flows throughout the coil of the loud speaker and therefore ultrasonic waves cannot be produced.
Used normally, a 150-watt, 120 volt light bulb requires how many amps of current? Ans: Used generally, a 150-watt, 120 volt light bulb needs 1.25 amps.
Faraday's law The line integral of the electric field about a closed curve is proportional to the instant time rate of change of the magnetic flux by a surface limited by tha
Q. What is artificial radioactivity? The phenomenon by which still light elements are made radioactive by artificial or induced methods is called artificial radioactivity. α
Q. Illustrate what path does an asteroid take? Answer:- The asteroid will forever take the path minimizing its Lagrangian recognized as the least action principle in Lagra
two insulated charged copper spheres A and B of identical size have charge q and -3q respectably .when they are brought in contact with each other and then separated,what are the n
Determine the change in entropy when 2 kg of a gas at 277 K is heated in a closed, rigid container to a temperature of 368 K. Take the specific heat at constant volume to be 1.42 K
Temperature joule; J (after J.P. Joule, 1818-1889) The derived SI unit of energy described as the amount of work done by moving an object by a distance of 1 m by applying a fo
A reaction is first order in A and second order in B. (a) Write differential rate equation. (b) How is the rate affected if the concentration of B is tripled? (c) How is
What are the basic block structure of communication system? What do you understand by sky wave propagation?
Explain and write about sonar
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