A specific heat capacity of steel is 420 J kg ° C . How much energy is required to heat 1 kg of steel by 20 ° C ?

Given, Mass of steel, m = 1 kg Specific heat capacity of steel, C = 420 J kg ° C Raise in temperature, ∆ T = 20 ° C Let Q be the amount of heat energy required. We have, Q = m C ∆ T ⇒ Q = 1 kg × 420 J kg ° C × 20 ° C ⇒ Q = 8400 J

A specific heat capacity of steel is 420 J kg ° C . How much energy is required to heat 5 kg of steel by 20 ° C ?

Given, Mass of steel, m = 5 kg Specific heat capacity of steel, C = 420 J kg ° C Raise in temperature, ∆ T = 20 ° C Let Q be the amount of heat energy required. We have, Q = m C ∆ T ⇒ Q = 5 kg × 420 J kg ° C × 20 ° C ⇒ Q = 42000 J

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Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 10 - Thermal Properties of Matter>Questions

David Sang Solutions for Chapter: Thermal Properties of Matter, Exercise 5: Questions

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David Sang Physics Solutions for Exercise - David Sang Solutions for Chapter: Thermal Properties of Matter, Exercise 5: Questions

Attempt the free practice questions on Chapter 10: Thermal Properties of Matter, Exercise 5: Questions with hints and solutions to strengthen your understanding. Cambridge IGCSE® Physics Coursebook Second Edition solutions are prepared by Experienced Embibe Experts.

Questions from David Sang Solutions for Chapter: Thermal Properties of Matter, Exercise 5: Questions with Hints & Solutions

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Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 10 - Thermal Properties of Matter>Questions>Q 10.1

A specific heat capacity of steel is $420 \frac{J}{kg ° C}$ . How much energy is required to heat $1 kg$ of steel by $20 ° C$ ?

MEDIUM

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 10 - Thermal Properties of Matter>Questions>Q 10.1

A specific heat capacity of steel is $420 \frac{J}{kg ° C}$ . How much energy is required to heat $5 kg$ of steel by $20 ° C$ ?

MEDIUM

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 10 - Thermal Properties of Matter>Questions>Q 10.11

A beaker contains $1 kg$ of water at $20 ° C$ . A student heats a $1 kg$ block of aluminium to $100 ° C$ and then drops it in to the water. After a short while, the water and the block both reach a temperature of $38 ° C$ . The student said that water has a greater specific heat capacity than aluminium. Was he correct? Explain.