Study the given table and answer the following questions:

\begin{tabular}{|c|c|}
\hline
Substance & Specific Heat Capacity \\
\hline
[tex]$X$[/tex] & [tex]$380 \, J/kg \, ^{\circ}C$[/tex] \\
\hline
[tex]$Y$[/tex] & [tex]$910 \, J/kg \, ^{\circ}C$[/tex] \\
\hline
[tex]$Z$[/tex] & [tex]$470 \, J/kg \, ^{\circ}C$[/tex] \\
\hline
\end{tabular}

i. If equal masses of [tex]$X$[/tex], [tex]$Y$[/tex], and [tex]$Z$[/tex] have the same temperature, which one has the maximum heat?

ii. If three pieces of them have equal temperature and equal amounts of heat, which one of them has the maximum mass?

iii. What do you mean by the specific heat capacity of [tex]$Z$[/tex] is [tex]$470 \, J/kg \, ^{\circ}C$[/tex]?

iv. If equal masses having the same shape and size of them at [tex]$100^{\circ}C$[/tex] temperature are kept over a wax slab, which of them will melt the wax to the maximum depth?



Answer :

Certainly! Let's work through the problem thoroughly.

### Given Table:
[tex]\[ \begin{tabular}{|c|c|} \hline Material & Specific Heat Capacity (\( J / kg \cdot °C \)) \\ \hline X & 380 \\ \hline Y & 910 \\ \hline Z & 470 \\ \hline \end{tabular} \][/tex]

Now, let's address each part of the question step-by-step:

### Part i:
Question: If the equal mass of [tex]\( X \)[/tex], [tex]\( Y \)[/tex], and [tex]\( Z \)[/tex] has the same temperature, which one has maximum heat?

Explanation:
- The heat energy ([tex]\( Q \)[/tex]) stored in a substance is given by the formula:
[tex]\[ Q = mc\Delta T \][/tex]
where:
- [tex]\( m \)[/tex] is the mass,
- [tex]\( c \)[/tex] is the specific heat capacity,
- [tex]\( \Delta T \)[/tex] is the temperature change.

- For equal mass ([tex]\( m \)[/tex]) and temperature ([tex]\( \Delta T \)[/tex]), the material with the highest specific heat capacity ([tex]\( c \)[/tex]) will store the maximum heat.

From the table:
- [tex]\( X \)[/tex]: [tex]\( 380 \, J/kg \cdot °C \)[/tex]
- [tex]\( Y \)[/tex]: [tex]\( 910 \, J/kg \cdot °C \)[/tex]
- [tex]\( Z \)[/tex]: [tex]\( 470 \, J/kg \cdot °C \)[/tex]

Among these, [tex]\( Y \)[/tex] has the highest specific heat capacity. Hence, the material [tex]\( Y \)[/tex] has the maximum heat at the same temperature and mass.

### Part ii:
Question: If three pieces of them have equal temperature and equal amount of heat, which one of them has maximum mass?

Explanation:
- Rearranging the heat energy formula:
[tex]\[ m = \frac{Q}{c\Delta T} \][/tex]

- For equal heat ([tex]\( Q \)[/tex]) and temperature change ([tex]\( \Delta T \)[/tex]), the material with the lowest specific heat capacity ([tex]\( c \)[/tex]) will have the highest mass ([tex]\( m \)[/tex]).

From the table:
- [tex]\( X \)[/tex]: [tex]\( 380 \, J/kg \cdot °C \)[/tex]
- [tex]\( Y \)[/tex]: [tex]\( 910 \, J/kg \cdot °C \)[/tex]
- [tex]\( Z \)[/tex]: [tex]\( 470 \, J/kg \cdot °C \)[/tex]

Among these, [tex]\( X \)[/tex] has the lowest specific heat capacity. Hence, the material [tex]\( X \)[/tex] will have the maximum mass for equal heat and temperature.

### Part iii:
Question: What do you mean by the specific heat capacity of [tex]\( Z \)[/tex] being [tex]\( 470 \, J/kg \cdot °C \)[/tex]?

Explanation:
- The specific heat capacity of a substance is the amount of heat energy required to raise the temperature of one kilogram of that substance by one degree Celsius.

For material [tex]\( Z \)[/tex]:
- A specific heat capacity of [tex]\( 470 \, J/kg \cdot °C \)[/tex] means that [tex]\( 470 \)[/tex] Joules of heat energy is required to raise the temperature of [tex]\( 1 \, kg \)[/tex] of material [tex]\( Z \)[/tex] by [tex]\( 1 \, °C \)[/tex].

### Part iv:
Question: If the equal mass having the same shape and size of them at [tex]\( 100 \, °C \)[/tex] temperature is kept over a wax slab, which of them will melt the wax to the maximum depth?

Explanation:
- When equal masses at the same temperature are kept over a wax slab, the one with the highest specific heat capacity will transfer the most heat to the wax, resulting in deeper melting.

From the table:
- [tex]\( X \)[/tex]: [tex]\( 380 \, J/kg \cdot °C \)[/tex]
- [tex]\( Y \)[/tex]: [tex]\( 910 \, J/kg \cdot °C \)[/tex]
- [tex]\( Z \)[/tex]: [tex]\( 470 \, J/kg \cdot °C \)[/tex]

Therefore, [tex]\( Y \)[/tex], having the highest specific heat capacity, will melt the wax to the maximum depth.

### Summary:
- i. Material [tex]\( Y \)[/tex] has the maximum heat.
- ii. Material [tex]\( X \)[/tex] has the maximum mass for equal heat and temperature.
- iii. The specific heat capacity of [tex]\( Z \)[/tex] being [tex]\( 470 \, J/kg \cdot °C \)[/tex] means that [tex]\( 470 \)[/tex] Joules of heat energy is required to raise the temperature of [tex]\( 1 \, kg \)[/tex] of material [tex]\( Z \)[/tex] by [tex]\( 1 \, °C \)[/tex].
- iv. Material [tex]\( Y \)[/tex] will melt the wax to the maximum depth.