Rate of loss of heat of two spheres at same temperature having radii in ratio 1 : 2 is

Two lead spheres at the same temperature have radii in the ratio 1 :2. What is the ratio of their heat capacities?

There are two brass spheres at the same temperature. If their radii are in the ratio 2:3. The ratio of their thermal capacities is

Compare the rate of loss of heat from a metal sphere at 827^@C with the rate of loss of heat from the same sphere at 427^@C , if the temperature of the surrounding is 27^@C .

Two metalic spheres p and Q are made of same material have same smoothness but the weight of p is 8 times that of Q if the two are heated to same temperature and left to cool then the ratio of rate of cooling of Q to that of p is

Two spheres of the same metal have radii in the_ratio 1 : 2 Their heat capacities are in what ratio

Two cylindrical rods of the same material have the same temperature difference between their ends. The ratio of the rates of flow of heat through them is 1 : 8. The radii of the rods are in the ratio 1 : 2. What is the ratio of their lengths ?