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What is the formula for calculating the heat transfer in a substance? (2023)

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Question: What is the formula for calculating the heat transfer in a substance? (2023)

Options:

  1. Q = mcΔT
  2. Q = mgh
  3. Q = mv²/2
  4. Q = PΔt

Correct Answer: Q = mcΔT

Exam Year: 2023

Solution: 

The formula for calculating the heat transfer in a substance is Q = mcΔT, where Q is the heat added, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature.

What is the formula for calculating the heat transfer in a substance? (2023)

Practice Questions

Q1
What is the formula for calculating the heat transfer in a substance? (2023)
  1. Q = mcΔT
  2. Q = mgh
  3. Q = mv²/2
  4. Q = PΔt

Questions & Step-by-Step Solutions

What is the formula for calculating the heat transfer in a substance? (2023)
  • Step 1: Understand what Q represents. Q is the total heat energy added or removed from a substance.
  • Step 2: Identify m, which is the mass of the substance. This is how much of the substance you have.
  • Step 3: Learn about c, the specific heat capacity. This is a property of the substance that tells you how much heat is needed to change its temperature.
  • Step 4: Know ΔT, which is the change in temperature. This is calculated by subtracting the initial temperature from the final temperature (ΔT = final temperature - initial temperature).
  • Step 5: Put it all together in the formula Q = mcΔT. This means to find the heat transfer, multiply the mass (m) by the specific heat capacity (c) and then by the change in temperature (ΔT).
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