An induction coil has 10×10^5 turns. The number of magnetic field lines through it changes from 4×10^-3wb to 0 in 0.01, Ie, then what is the average induced elecromotive force on the coil during this time?
A. 4×10^4V
B. 4×10^5V
C. 40×10^5V
D. None of the above.

8. why do radio telescopes convert radio waves (analog signals) to electrical (digital) signals for analysis? (hint: what did the article say about the advantages of digital signals? )

Afixed electric space heater wired by a cable with an ampacity of 30 a should draw a maximum current of a. 30 a. b. 24 a. c. 15 a. d. 27 a.

Marcella is a four-year-old girl who is a victim of emotional child abuse. based on the child and family services improvement and innovation act of 2011, which action should the government take for marcella? a. the state should arrest marcella’s abuser. b. the state should find a home for marcella as soon as possible. c. the state should enforce stricter laws in the area where marcella resides. d. the state should provide medical assistance to marcella.