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99 ml of H2O is initially at room temperature (20.0oC). A chilled steel rod at 2.0oC is placed in the water. If the final temperature of the system is 18.7oC, what is the mass of the steel bar? Specific heat of water = 4.18 J g-1oC-1; specific heat of steel = 0.452 J g-1oC-1
Mass of the system is same. since, p=mv momentum remains same
Refractive Index: The ratio of sine of angle of incidence to the sine of angle of refraction is constant for all rays passing single medium to another medium. This constant is
Describe NOR and NAND gates. Provide their truth tables. Discuss the nature of a p-n junction. How does a potential barrier develop at the junction.
what is specfic gravity
how much force is necessary to stop the car when steps on a brake a 1000-kg car travelling at 65 km/h if the braking distance is 35 m?
Superconductivity The phenomena from which, at sufficiently low temperatures, a conductor can conduct charge along with zero resistance. The current theory for describing supe
(i) It has of continuously varying wavelengths in a exact wavelength range. (ii) It is given by solids, liquids and highly compressed gases heated to high temperature. (iii)
Show that the Nusselt number for a sphere in a quiescent fluid is 2. Hint: Write the thermal resistance for the outer surface of the sphere in terms as both conductive and conve
An uncharged capacitor with a solid dielectric is connected to a similar air capacitor charged to a potential of V0. If the common potential after sharing of charges becomes V, the
A point source of light is taken at the bottom of a tank containing water (n for water = 4/3) to a depth of 0.5 m. Determine the area of the circular patch through which light from
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