Question

Two pieces of metal with exactly the same mass are placed on a surface in bright sunlight. The temperature of the 1st block increases by 3°C while the temperature of the 2nd increases by 8°C. If the specific heat of the 2nd block is 0.24 J/g-K, what is the specific heat of the 1st block?

Answer 1

Answer:The specific heat of the first block is 0.64 J/gK,

Explanation:

Block-2

$Q= m\times c\times \Delta T$

Q= heat from the sun

m = mass of the block-2

c = heat capacity of block-2= 0.24 J/g K

$\Delta T={\text{Change in temperature}}=8^oC$

$Q=m\times c\times 8^C$..(1)

Block-1

Q= heat from the sun

m = mass of the block-2

c' = heat capacity of block-1

$\Delta T'={\text{Change in temperature}}=3^oC$

$Q=m\times c'\times 3^oC$..(2)

Dividing(1) by (2)

$\frac{Q}{Q}=\frac{m\times 0.24 J/gK\times 8oC}{m\times c'\times 3^oC}$

c'= 0.64 J/gK

he specific heat of the first block is 0.64 J/gK,

Answer 2

B. 0.64 J/g-K I already did the test this was the correct answer