Nikki usually leaves her cell phone on.If her cell phone is on but she is not actually using it,the battery will last fo

Nikki usually leaves her cell phone on.If her cell phone is on but she is not actually using it,the battery will last for 24 hours.If she is using it constantly,the battery will last for only 3 hours.Since the last recharge,her phone has been on 9 hours,and during that time she has used it for 60 minutes.If she doesn’t talk any more but leaves the phone on,how many more hours will the battery last?

英語(yǔ)人氣：226 ℃時(shí)間：2019-11-06 11:32:19

優(yōu)質(zhì)解答

電話待機(jī)狀態(tài),電池可用24小時(shí),如果持續(xù)使用,電池只能用3小時(shí).如果剛充完電,開(kāi)機(jī)了9小時(shí),并且在這9小時(shí)中使用了60分鐘,如果不再通話,可再待機(jī)多久?
答案：還可以再待機(jī)7小時(shí),
設(shè)電量為1,待機(jī)每小時(shí)的用電量為1/24,通話每小時(shí)的用電量為1/3
后來(lái)這次先待機(jī)9h,用電量為 1/24 * 9,然后通話 60分鐘=1h,用電量為 1*1/3
用剩余的電量 1- 9/24- 1/3 除以待機(jī)每小時(shí)的用電量 1/24,結(jié)果為 7h.

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Nikki usually leaves her cell phone on.If her cell phone is on but she is not actually using it,the battery will last fo

精品偷拍一区二区三区,亚洲精品永久码,亚洲综合日韩精品欧美国产,亚洲国产日韩a在线亚洲