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Contests/Gnit Weekly Challenge Beginner 002 (GWCB002)/Problem 3 Boiling Water Using an “Other-Dimensional” Outlet
Problem 3

Boiling Water Using an “Other-Dimensional” Outlet

Finished
300 ptsLv.3 ElementaryThermodynamics
2026/07/01 21:00〜2026/07/01 21:30
Author: admin02

Problem Statement

Person A decided to boil water of mass m0m_0m0​ to make hot water.

After 4 minutes and 30 seconds, the temperature of the hot water changed from T0T_0T0​ (the temperature before heating) to T1T_1T1​ (the temperature after 4 minutes and 30 seconds).

Assume the thermal efficiency is η0\eta_0η0​ and the specific heat of water is constant at cwc_wcw​.

Answer the following questions.

(1) Find the total amount of energy ( J\mathrm{J}J ) used to heat the water.

(2) Find the average power consumption (work rate) ( W\mathrm{W}W ) of the heating appliance used to heat the water.

Constraints

  • η0=1.00\eta_0 = 1.00η0​=1.00 (100%100\%100%)
  • m0=2250 gm_0 = 2250\ \mathrm{g}m0​=2250 g
  • T0=288.15 KT_0 = 288.15\ \mathrm{K}T0​=288.15 K
  • T1=333.15 KT_1 = 333.15\ \mathrm{K}T1​=333.15 K
  • cw=4.184 J/(g⋅K)c_w = 4.184\ \mathrm{J}/(\mathrm{g}\cdot\mathrm{K})cw​=4.184 J/(g⋅K)

Input Format

Let A1A_1A1​ be the answer to Part (1) and A2A_2A2​ be the answer to Part (2). Calculate the value of A1+A2A_1 + A_2A1​+A2​ and enter that natural number.

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