Question 931: Thermodynamics & KTG

Question

The quantities of heat required to raise the temperature of two solid copper spheres of radii r
1
and r
2
(r
1
= 1.5r
2
) through 1 K are in the ratio :

Accepted Answer

$$\Delta Q = ms\Delta T$$
$$\Delta Q = {4 \over 3}\rho s\Delta T$$
$${{\Delta {Q_1}} \over {\Delta {Q_2}}} = {{r_1^3} \over {r_2^3}} = {1.5^3} = {{27} \over 8}$$

Answer

$${9 \over 4}$$

Answer

$${3 \over 2}$$

Answer

$${5 \over 3}$$

Answer

$${27 \over 8}$$

Thermodynamics & KTG

The quantities of heat required to raise the temperature of two solid copper spheres of radii r 1 and r 2 (r 1 = 1.5r 2 ) through 1 K are in the ratio :

Choose the correct answer: