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In radioactive changes, mass is not conserved in the traditional sense as some of the mass is converted into energy according to Einstein’s equation E=mc2E = mc2E=mc2. For other processes like oxidation and hydrolysis, the law of conservation of mass holds true.
A cylindrical tank with a radius of 7 m is half-filled with water. If a cuboidal block of dimensions 2 m × 5.5 m × 7 m is submerged completely into th...
Find the number of silver balls of diameter 2 cm each, that can be made from a sphere of diameter 32 cm?
A rectangular tank is 60 meters long and 40 meters deep. If 1800 cubic meters of water is drawn off the tank, the level of the water in the tank goes do...
A right pyramid has an equilateral triangle as its base, with each side measuring 7 cm. The height of the pyramid is given as 32√3 cm. Find the volume...
A square whose diagonal is 12 √2 cm is made base of the pyramid. if height of the pyramid is 18cm, then what is the total surface area of the pyramid....
A hemisphere of radius 10 cm is melted and recast into the shape of a cone with a base diameter of 10 cm. Find the height of the cone.
The average of the areas of 2 similar triangles is 706.5 m2 whose perimeters are in the ratio of 6: 11. What is 20% of the difference (in m2)...
A solid cone is placed inside a solid hemisphere, both having the same radius and height. If the volume of the cone is 150 cm³, find the total volume o...
In a cricket match the captain of one of a team scored 26 runs more than the average runs scored by the remaining 10 batsmen of that team who batted in ...
A hemispherical bowl with an internal radius of 18 cm is full of liquid. This liquid will be filled in cylindrical bottles each radius of 3 cm and heigh...
