Assume that a certain city consumes electrical energy at an average rate of 2.0 × 109 w. what would be the mass change in producing enough energy to keep this city running for 25 weeks? (c = 3.00 × 108 m/s) assume that a certain city consumes electrical energy at an average rate of 2.0 × 109 w. what would be the mass change in producing enough energy to keep this city running for 25 weeks? (c = 3.00 × 108 m/s) 0.57 kg 0.38 kg 0.47 kg 0.34 kg submitrequest answer