If y = 0.02 sin (30x ? 400t) (SI units), the velocity of the wave is
a. 3/40 m/s.
b. 40/3 m/s.
c. 60?/400 m/s.
d. 400/60? m/s.
e. 400 m/s.
b
Physics & Space Science
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The primary coil of a transformer has 100 turns and its secondary coil has 400 turns. If the ac voltage applied to the primary coil is 120 V, what voltage is present in its secondary coil?
A) 100 V B) 30 V C) 70 V D) 480 V E) 400 V
Physics & Space Science
What is the average power dissipation in a series RC circuit if R = 5.00 k?, C = 2.00 ?F, and V = 170 cos (300t)?
A. 0.930 W B. 2.60 W C. 28.2 W D. 157 W E. 5.20 W
Physics & Space Science
Natural processes tend to increase the __________ of thermodynamic systems
Fill in the blank(s) with correct word
Physics & Space Science
Energy storage is normally used to produce baseload
What will be an ideal response?
Physics & Space Science