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Variation of temperature of a body according to Newton's law: Let Consider a system has a temperature Φi at time t = 0. It is placed in an environment whose temperature is Φ0. We are involved in searching the temperature of the object at time t, suppose Newton's law of cooling to hold good or by taking that the temperature dissimilarity is very small. As per that law, rate of cooling temperature dissimilarity
In a Wheatstone bridge ABCD, a galvanometer is connected between A and C, and a battery among B and D. A resistor of unknown value is connected among A and B. When the bridg
Gravitational field can also be shown by lines of force. This is same in several ways as that of electric lines of forces. With one dissimilarity, electric charges are negative and
Eddy current loss is proportional to the (A) Frequency. (B) Square of the frequency. (C) Cube of the frequency. (D) Square-root of the frequency.
Does destructive interference violate the principle of conservation of energy? Briefly explain.
a) Two charges of the value 15X10 -9 coulomb and 30X10 -9 coulomb are locate at a distance 6 cm. Determine the intensity of electric field at point which is at a distance 2 cm fro
A pulley in the form of a uniform disk with a heavy rope hanging over it. The circumference of the pulley is 1.2m and its mass is2.2kg.The rope is 8.0m long and its mass is 4.8kg.A
If W is atomic weight and N is the atomic number of an element, then: (1) Number of e -1 = W- N (2) Number of 0 n 1 = W- N (3) Number of 1 H 1 = W-N (4) Number of 0
What is Eclipses? Sun is a luminous body while earth and moon are non-luminous bodies. Only those parts of moon on the light of sun falls is visible. Also sun is larger than, b
Defective eyesight due to focusing(refractive)problems- ametropia: It is often possible to correct ametropia completely with glasses There are four general types of ametrop
Thermodynamic laws: First law of thermodynamics In internal energy of a system the change is the total heat transferred to or from the system & the work done on or by
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