Question

calculate specific heat capacity of the alloy of pressure cooker of mass 1.5kg is made , if the quantity of heat necessary to raise to raise its temperature by 60 degree C is 81kj

Answer 1

Required Answer:-

We have:

• Mass of the cooker = 1.5 kg
• Temperature change = 60°C = 60K
• Heat needed = 81000 J

To FinD:

• The specific heat capacity of the alloy of pressure cooker?

Step-by-step Explanation:

By using the formula for finding specific heat in terms of Heat needed, Change in temperature and mass of the substance:

$\large{ \boxed{ \sf{c = \frac{Q}{m \Delta \theta} }}}$

Where,

♚ c is the specific heat capacity

♔ Q is the heat required/needed.

♚ m is the mass of the substance.

♔ ∆Θ is the change in temperature.

Now, Plugging the values of Q, m and ∆Θ:

⇒ c = 81000 J / 1.5 kg × 60 K

⇒ c = 81000 J / 90 kgK

⇒ c = 900 J/kgK

Hence:

• The specific heat capacity of the alloy of pressure cooker is 900 J/kgK (Ans)

Answer 2

Answer:

Required Answer :-

• Mass of the cooker = 1.5 kg
• Temperature change = 60°C = 60K
• Heat needed = 81000 J

Here, we will use finding specific heat in terms of Heat needed,

$\huge \sf \: C = \dfrac{Q}{M \triangle \theta}$

Here,

♚ C = specific heat capacity

♛ Q = heat required/needed.

♚ m = mass of the substance.

♛ ∆Θ = change in temperature.

Now,

➽ C = 81000 J / 1.5 kg × 60 K

➽ C = 81000 J / 90 kgK

➽ C = 900 J/kgK

Therefore :-

The specific heat capacity = 900 J