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A bottle and a cork together cost a producer Tk 11. The bottle costs Tk 10 more than the cork. How much does the cork cost in taka?
Cork is a good insulator because it has
A swimmer jumps from a bridge over a canal and swims 1 km upstream. After that first kilometer, he passes a floating cork. He continues swimming for another half an hour and then turns around and swims back to the bridge in 30 minutes. The swimmer and the cork arrive at the bridge at the same time. The swimmer has been swimming with constant speed. How fast does the water in the canal flow?
When a cork and a nail are kept in a beaker filled with water, the cork floats while the nail sinks. What is the reason behind this?
Granules of cork are heated with ____________ oil to manufacture cork carpet.
Cork used in cork flooring is obtained from the bark of _____________ tree.
A thermos flask has a double walled bottle and the space between the walls is evacuated so as to reduce the heat flow. The bottle surfaces are silver plated and the emissivity of each surface is 0.025. If the contents of the bottle are at 375 K and temperature of ambient air is 300 K. What thickness of cork (k = 0.03 W/m degree) would be required if the same insulating effect is to be achieved by the use of cork?
When a cork and a iron nail are placed in a beaker filled with water, the cork floats while the iron nail is submerged.
What is the reason behind it?
Cork trees come from Cork, Ireland.
There are four friends Sharayn, Pinky, Tanisha and Mamta. Two study in J college. one each in X college and A college. Each one is definitely good at one subject and one is good at all the subjects. The subjects are English, Science, Maths and Computers. Of those studying in J college, one is good at Maths and the other in all subjects. Tanisha is studying in Acollege. Pinky is good at Maths. Sharayn is not good at Science. Find who is good at all the subjects.