Question
Electric cars are becoming an increasingly popular option for new car buyers, but perhaps the biggest remaining technical challenge preventing electric cars from extremely rapid
Electric cars are becoming an increasingly popular option for new car buyers, but perhaps the biggest remaining technical challenge preventing electric cars from extremely rapid market adoption is charging times. Unlike a gas-powered car whose tank can be filled in just a few minutes, typical electric car charging rates are more like tens of minutes, but this varies significantly by car.
As of February 2023, the following are three popular electric car models on the market along with their battery capacities and stated maximum charging rates. Abbreviated names for the make and model are given in parentheses:
Make and Model | Battery Capacity | Max Charging Rate |
Polestar 2 (P2) | 2.83108J | 140 kW |
Tesla Model 3 (T3) | 80 kWH | 2.6105J/s |
Rivian R1T (R1T) | 486 MJ | 0.2 MW |
Assume that all of these vehicles can achieve their max charging rate regardless of the state of charge of their battery. Compute the time it takes to charge each battery from 11% charge to 93%charge, and enter in the answer box the time (in minutes) you computed for theslowestcharging battery.
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