If a power company charges about 10 e per kilowatt-hour, how much would this energy cost per day if the person bought it from the power company? Express your answer using two significant figures.

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A&B are correct , just need help with C.   

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A person consumes about 2900 Cal a day. 1 Cal = 4186 J, and 1 kWh = 860 Cal.
▼
Part A
What is this energy in joules?
Express your answer using two significant figures.
= 1.2x107 J
Submit Previous Answers
✓ Correct
Part B
What is this energy in kilowatt-hours?
Transcribed Image Text:A person consumes about 2900 Cal a day. 1 Cal = 4186 J, and 1 kWh = 860 Cal. ▼ Part A What is this energy in joules? Express your answer using two significant figures. = 1.2x107 J Submit Previous Answers ✓ Correct Part B What is this energy in kilowatt-hours?
▼
What is this energy in kilowatt-hours?
Express your answer using two significant figures.
Q = 3.4 kWh
Submit
✓ Correct
Part C
Previous Answers
If a power company charges about 10 e per kilowatt-hour, how much would this energy cost per day if the person bought it
from the power company?
Express your answer using two significant figures.
Submit
195] ΑΣΦ
Cost = 8.16
(MC
Previous Answers Request Answer
?
$ per day
Transcribed Image Text:▼ What is this energy in kilowatt-hours? Express your answer using two significant figures. Q = 3.4 kWh Submit ✓ Correct Part C Previous Answers If a power company charges about 10 e per kilowatt-hour, how much would this energy cost per day if the person bought it from the power company? Express your answer using two significant figures. Submit 195] ΑΣΦ Cost = 8.16 (MC Previous Answers Request Answer ? $ per day
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