Question

Q= 65mJ t1= 20°C t2= 80°C C= 4200J/kg*°C P= 1000kg/m³ V=? m=?

Answer 1

Ответ:

V=47

m=74

Объяснение:

C= 4200J/kg*°C

P= 1000kg

Answer 2

To calculate the volume (V) and mass (m) of a substance given the heat energy (Q), initial temperature (t1), final temperature (t2), specific heat capacity (C), and density (P), you can use the following equations:

1. Calculate the change in temperature (ΔT): ΔT = t2 - t1 ΔT = 80°C - 20°C ΔT = 60°C

2. Calculate the heat energy absorbed or released during the process (Q) using the formula: Q = m * C * ΔT

Now, we can solve for m (mass):

Q = 65 mJ = 65 * 10^-3 J (since 1 mJ = 10^-3 J) C = 4200 J/kg°C ΔT = 60°C

Rearrange the equation to solve for m:

m = Q / (C * ΔT)

m = (65 * 10^-3 J) / (4200 J/kg°C * 60°C) m ≈ 2.44 * 10^-6 kg

3. Now that we have calculated the mass (m), we can calculate the volume (V) using the density (P):

V = m / P

V ≈ (2.44 * 10^-6 kg) / (1000 kg/m³) V ≈ 2.44 * 10^-9 m³

So, the mass (m) is approximately 2.44 * 10^-6 kg, and the volume (V) is approximately 2.44 * 10^-9 m³.