Abrother and sister try to communicate with a string tied between two tin cans. if the string is 9.5 m long, has a mass of 32 g, and is pulled taut with a tension of 8.6 n, how much time does it take for a wave to travel from one end of the string to the other ?

Asmall electric heater, immersed in 80g of water in a calorimeter of 40j/k raises the temperature from 10.5 degree celsius to 25 degree celsius in 12 minutes. using the same apparatus with 50g of oil instead of water, it is found that the temperature of oil rises from 7 degree celsius to 27 degree celsius in 10 minutes. find specific heat capacity of the oil.

If you held a stone over the mouth of a well and then let it go , what would happen to the stone? explain your answer.

Atrain flies at a speed of 350 miles per hour how far will it travel in 3 hours