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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?
A chemical reaction is known to occur spontaneously under standard conditions. Which of the following statements is/are true (more than one answer may be selected): A The to
A figure skater who while spinning in place drag her arms in to increase her rotational speed is most closely exhibiting which of the following Answer:- a) Conservation of
how to calculate wave function of particle?
Define the Magnets Magnets work according to rules similar to electric charges. All magnets have two poles, north (actually north-seeking) and south poles. Like poles repel and
An electric dipole is held in a uniform electric field. (1) Using suitable diagram, show that it does not undergo any translatory motion, and (2) derive an expression for the
Define Coulombs Law Coulomb's Law: The magnitude of the electric force among two electric point charges is proportional to the product of the two charges (Q1 and Q2) separated
Please help I am stuck on this physics problem. Please cany anyone explain to me how to do it step by step please? If the speed of a car is increased by 135%, by what factor will
Assignment in fluid motion
is motion of a ball on a smooth surface an example of uniform velocity? is motion of a ball on a rough surface an example of variable velocity? is a car moving on a straight path
an object has moved through a distance.can it have zero displacement?if yes support your answer with an example
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