subject
Engineering, 24.02.2020 18:03 KingLikeQueen

You are out of gas in the desert and you accidently dropped your phone battery down an Abandoned oil well. You have a charged car battery (12 volts) and a bunch of resistors and wire. You want to power your cell phone with this battery but the cell phone only operates if it has 3.6 Volts across its power terminals. (3.7 Volts will destroy the phone and 3.5 will fail to operate the phone.) If the cell phone uses 0.15 Amperes in all modes, design a circuit that will operate your cell phone from this car battery and let you call for help

ansver
Answers: 3

Another question on Engineering

question
Engineering, 03.07.2019 15:10
Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?
Answers: 3
question
Engineering, 04.07.2019 18:10
Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86
Answers: 2
question
Engineering, 04.07.2019 18:10
Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?
Answers: 3
question
Engineering, 04.07.2019 18:10
Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux
Answers: 3
You know the right answer?
You are out of gas in the desert and you accidently dropped your phone battery down an Abandoned oil...
Questions
question
Biology, 13.03.2021 05:50
question
Mathematics, 13.03.2021 05:50
question
Mathematics, 13.03.2021 05:50
Questions on the website: 13722362