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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?
Vertical Circular Motion A mass is in circular motion within the vertical plane. We show the weight and force exerted through the tension within the string.
These are non-metallic compounds consisting of ferric oxide and one or two bivalent metal oxides such as NiO, MnO. These have resistivity of the order of 10 9 O cm, which reduces e
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Q. Explain Snells Law? It is believed that Snell developed his well-known equation by purely empirical means. He made various measurements of the refracting properties of vario
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A current transformer has two turns on the primary winding and a secondary winding of 260 turns. The secondary winding is connected to an ammeter with a resistance of 0.2.The
Q What is Seebeck effect? Seebeck revealed that in a circuit consisting of two dissimilar metals like iron and copper an emf is developed when the junctions are maintained at
Aluminium Atomic number 13 Symbol Al Atomic weight 26.98154 Discovery W
Figure shows the magnetic circuit of a relay. When each of the air gaps are 1.5mm wide find the mmf required to produce a flux density of 0.75 T in the air gaps. Use the B-H cu
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