Assume that a certain city consumes electrical energy at an ...

[misspop]

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

Question 2

If a beam of electromagnetic radiation has an intensity of 120 W/m2, what is the maximum value of the electric field? (c = 3.0  108 m/s, 0 = 4  10-7 T  m/A, 0 = 8.85  10-12 C2/N  m2)
 
  A) 1.5 kV/m
  B) 1.0 T
  C) 1.0 V/m
  D) 0.30 kV/m
  E) 0.0032 V/m

[k.lashomb]

Answer to Question 1

A

Answer to Question 2

D

[misspop]

Gracias!

[atrochim]

TYSM