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 21 weeks? (c = 3.00 × 108 m/s)
A) 0.28 kg
B) 0.32 kg
C) 0.39 kg
D) 0.48 kg
A
Physics & Space Science
You might also like to view...
White-hot sparks from a 4th-of-July-type sparkler that strike your skin have relatively
A) high temperatures. B) few molecules per spark. C) low transfer of energy. D) all of the above E) none of the above
Physics & Space Science
What is the momentum of an electron moving at a speed of 0.90 c?
A. 
B. 
C. 
D. 
E. 
Physics & Space Science
Two charged bodies separated by a distance d exert an attractive electrical force on each other. The signs of the charges on the two bodies are __________ and __________
Fill in the blank(s) with correct word
Physics & Space Science
A 120-V rms signal at 60 Hz is applied across a series combination of a 30-mH inductor and a 100-? resistor. What is the rms value of the current in this circuit?
A) 1.2 A B) 1.8 A C) 0.80 A D) 1.6 A E) 1.4 A
Physics & Space Science