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Define about the Heat Loss?
An immersion heater of power J=500 W can be used to heat water in a bowl. After 2 minutes the temperature enhance from T1=85oC to T2=90°C. The heater is after that switched off for an additional minute and the temperature drops ΔT = 1°C. By estimation the mass of the water in the bowl and The thermal capacity of water c= 4.2 • 103j/kg K.
At what temperature would the average speed of helium atoms equal (a)the escape speed from Earth, 1.12 ´ 10 4 m/s, and (b) the escape speed from the Moon, 2.37´ 10 3 m/s? (See Ch
The force between two magnetic poles divided by a distance ‘d' in air is ‘F'. At what distance between them the force becomes doubled?
Q. Explain how Newton's ring can be obtained in the laboratory. Why Newton's rings are circular in shape? How the Newton's rings are used to find refractive index of liquid?
FORCE AND NEWTON'S LAWS 1. Ancient view objects tend to stop if they are in motion; force is needed to keep something motion. This was a natural thing to believe in beca
lab manual
examples of liked paralled forces
why a metal disc is thrown up when it is placed on the top of an electromagnet is the current is switched on?
Two grating A and B have the same width of the ruled surface but A has greater number of lines. Giving reasons compare in two cases (a) Intensity (b) Width of principal maxim
What is a light Guide? While a number of single fibers are grouped together to create a larger diameter light conductor the resulting structure is termed as a light guide. Occa
Clear definitions of, and rationale for defining variables as explanatory confounding (if required) effect modifying variables (if required) and rationale if the form
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