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a) Calculate the energy needed for this heating process. b) Calculate what volume change the water will undergo in the heating process. Express the volume change in volume in units of both m³ and cm³. c) Calculate the cost of heating this volume of water if you know the cost of electricity is $0.28 per kWh ? What assumption(s) are we making in this calculation e) Based on the calculations in (c) above, approximately how much will a daily hot shower cost you over a month if we assume that you use around half the volume of the cylinder every time you shower? What costs in the heating of your shower water are we ignoring in this case ?

a) Calculate the energy needed for this heating process. b) Calculate what volume change the water will undergo in the heating process. Express the volume change in volume in units of both m³ and cm³. c) Calculate the cost of heating this volume of water if you know the cost of electricity is $0.28 per kWh ? What assumption(s) are we making in this calculation e) Based on the calculations in (c) above, approximately how much will a daily hot shower cost you over a month if we assume that you use around half the volume of the cylinder every time you shower? What costs in the heating of your shower water are we ignoring in this case ?

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Q2) An electrical hot water cylinder has a capacity of 200 litres of water and this water is heated from 18 °C to 60 °C. (a) Calculate the energy needed for this heating process. (b) Calculate what volume change the water will undergo in the heating process. Express the volume change in volume in units of both m3 and cm3. (c) Calculate the cost of heating this volume of water if you know the cost of electricity is $0.28 per kWh ? What assumption(s) are we making in this calculation (e) Based on the calculations in (c) above, approximately how much will a daily hot shower cost you over a month if we assume that you use around half the volume of the cylinder every time you shower? What costs in the heating of your shower water are we ignoring in this case ?
Transcribed Image Text:Q2) An electrical hot water cylinder has a capacity of 200 litres of water and this water is heated from 18 °C to 60 °C. (a) Calculate the energy needed for this heating process. (b) Calculate what volume change the water will undergo in the heating process. Express the volume change in volume in units of both m3 and cm3. (c) Calculate the cost of heating this volume of water if you know the cost of electricity is $0.28 per kWh ? What assumption(s) are we making in this calculation (e) Based on the calculations in (c) above, approximately how much will a daily hot shower cost you over a month if we assume that you use around half the volume of the cylinder every time you shower? What costs in the heating of your shower water are we ignoring in this case ?
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