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A commuter train blows its horn as it passes a passenger platform at a constant speed of 40.0m/s. The train horn sounds at a frequency of 305 Hz when the train is at rest.
(a) What is the frequency observed by a person on the platform as the train approaches? (b) What is the frequency observed by a person on the platform as the train recedes from him? (c) What wavelength does the observer find in each case?
Question 1. Explain how will you perform ward radiography? 2. Discuss the radiographic projections recommended for imaging the first to third cervical vertebrae? 3. Write
Point out the direction of the current if any induced to flow in the coil by the changing magnetic field. (Depicted is a view of the coil from the side. Toward the top of the displ
(i) Effect of temperature: (a) In general elasticity reduces as the temperature increases. (b) Invar is an exception. There is no effect of temperature on elasticity of in
anyone guide me about the explanation of coulombs law
Electrostatic field is caused by stationary charge, Induced field is caused by time-varying magnetic field
1. A protein with a density of 1.41 g/cm 3 has a molecular weight of 5000 g/mol. a. Calculate its radius. b. The radius measured during an experiment turned out to be 2.24
Does destructive interference violate the principle of conservation of energy? Briefly explain.
Give the basic construction of pentode Ans: Construction of Pentode: Constructional details of a typical pentode are demonstrated in fig. (a) and fig. (b) Pentode comp
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.
Liebig condenser (iron) A piece of iron pipe line as is used for water or electric conduit can be used to make a metal condenser which is much more robust than a glass one. Inl
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