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Diffstat (limited to '3845/CH20/EX20.8/Ex20_8.sce')
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1 files changed, 17 insertions, 0 deletions
diff --git a/3845/CH20/EX20.8/Ex20_8.sce b/3845/CH20/EX20.8/Ex20_8.sce new file mode 100644 index 000000000..c3312566d --- /dev/null +++ b/3845/CH20/EX20.8/Ex20_8.sce @@ -0,0 +1,17 @@ +//Example 20.8
+P=60;//Power (W)
+t=1000;//Time (h)
+E=P*t/1000;//Energy (kW.h)
+cost1=E*0.12;//Cost of usage if it costs 12 cents per kWh ($)
+printf('a.Cost of using a 60W bulb for 1000h = $%0.2f',cost1)
+bulb_cost1=0.25;//Cost of incandescent bulb ($)
+total_cost1=cost1+bulb_cost1;//Total cost of using incandescent bulb for 1000h ($)
+printf('\n Total cost of using an incandescent bulb = $%0.2f',total_cost1)
+cost2=cost1/4;//Cost of using a CFL bulb for 1000h considering it consumes 1/4th the power of the incandesent bulb ($)
+bulb_cost2=1.50/10;//Investment cost of CFL bulb for the time period of use, considering it lasts 10 times longer ($)
+total_cost2=cost2+bulb_cost2;//Total cost of using the CFL bulb for 1000h ($)
+printf('\nb.Total cost of using a CFL bulb = $%0.2f',total_cost2)
+//Total cost of usage for incandescent bulb has not been calculated in the textbook
+//Openstax - College Physics
+//Download for free at http://cnx.org/content/col11406/latest
+
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