<span>1079252848.8 kilometer per hour
</span>
Answer:
Explanation:
I = V/R = 120 V/ 50 Ω = 2.4 A
P = VI = 120(2.4) = 288 W = 288 J/s
288 J/s (15 min(60s / min)) = 259,200 J
or the electric company would charge for
288 W / (1000 W/kW)•(15/60) hr = 0.072 kW•hr
At $0.20 / kW•hr, that would be under 1½ cents
The equation that relates the voltages and the number of turns in a transformer is

where

is the voltage in the secondary coil,

is the voltage in the primary coil, and

and

are the number of turns on the secondary and primary coils.
Using the numbers, we find the ratio between the number of turns:
Answer: The reflected ray will be 44 degrees.
Explanation: The Law of Reflection states the angle of incidence ( the incoming light ray) equals the angle of reflection ( the light ray being reflected) Therefore, the angle of reflection will be 44 degrees.
Hope that helped!