The <u><em>voltage</em></u> at the input to the hair dryer is
V = (current) · (resistance)
V = (15 A) · (8 Ω)
<em>V = 120 volts</em>
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The <em><u>power</u></em> dissipated by the hair dryer is
P = (current)²· (resistance)
P = (15 A)² · (8 Ω)
<em>P = 1800 watts </em>
<em />
Answer:
6.39 meters
Explanation:
t=sqrt(2d/g)
convert cm to m...... t=sqrt(2*0.73/9.81)...... t=0.1488 seconds
v=d/t...... v=0.70/0.1488....... v=4.7m/s
Now, the new time out the window is t=sqrt(2*6.68/9.81)..... t=1.36 seconds
d=vt....... d=(4.7)*(1.36)...... d=6.39 meters!
Answer:
30 m
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Explanation:
<u>We are given:</u>
Initial velocity (u) = 10 m/s
Final velocity (v) = 20 m/s
Time interval (t) = 2 seconds
Distance travelled by the bus (s) = s meters
<u>Solving for the distance travelled:</u>
<u>Solving for the acceleration:</u>
v = u + at [<em>first equation of motion</em>]
20 = 10 + a(2) [<em>replacing the given values</em>]
2a = 10 [<em>subtracting 10 from both sides</em>]
a = 5 m/s² [<em>dividing both sides by 2</em>]
<u>Solving for the distance:</u>
s = ut + 1/2 (at²) [<em>second equation of motion</em>]
s = 10(2) + 1/2(5)(2)² [<em>replacing the given values</em>]
s = 20 + 10
s = 30 m
Therefore, the bus travelled 30 m in the given time interval
Answer:So You Decide To Move Closer To Give The Conversation A Sound Level Of 80.0dB Instead. ... You are trying to overhear a juicy conversation, but from your distance of 24.0m , it sounds like only an average whisper of 40.0dB .
Explanation:
