Solve the following problems :
Two substances A and B have specific heats c and 2c respectively . If A and B are given Q and 4Q amounts of heat respectively , the change in their temperatures is the same . If the mass of A is m , what is the mass of B ?

Which of the following substances (A, B and C) has the highest specific heat?

Solve the following problems : When a substance having mass of 3 kg receives 600 cal of heat , its temperature increases by 10 ⁰C . What is the specific heat of the substance ?

Solve the following problems : 20 g of water is given 2090 j of heat . Determine the change in the temperature of water .

Two uniform brass rods A and B of length l and 2l and radii 2r and r respectively are heated to the same temperature. The ratio of the increase in the volume of A to that of B is

If A and B are two finite sets having m and n elements respectively, then the total number of mapping from A to B is…

Solve the following problems : When a substance having mass of 3 kg receives 600 cal of heat , its temperature increases by 10 ⁰C to 70 ⁰C . What is the specific heat of the substance ?

Solve the following problems : Suppose the masses of the calorimeter , the water in it and the hot object made up of copper which is put in the calorimeter are the same . The initaial temperature of the calorimeter and water is 30 ⁰C and that of the hot object is 60 ⁰C . the specific heats of copper and water are 0.09 cal/g ⁰C and 1 cal/g ⁰C respectively . what will be the final temperature of water ?

Three projectiles A, B and Care projected at an angle of 30^@, 45^@, 60^@ respectively. If R_A, R_B and R_C are ranges of A, B and C respectively, then (velocity of projection is same for A, B and C

Two substances A and B have their relative permeabilities slightly greater and less than unity respectively. What do you conclude about A and B?