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3 years ago

A clothes dryer uses about 9 amps of current from a 240 volt line. How much power does it use?

Physics

2 answers:

Basile [38]3 years ago

4 0

240 x 9 = power
power= 2160 watts

Otrada [13]3 years ago

3 0

Answer:

Power used by dryer is 2160 watts

Explanation:

It is given that,

Current used by clothes dryer, I = 9 amps

Voltage used by dryer, V = 240 volts

We have to find the power used by it. Mathematically, the relationship between voltage, current and power is given by :

$P=V\times I$

Putting the values of I and V in above equation as :

$P=240\ V\times 9\ A$

P = 2160 watts

Hence, the power used by dryer is 2160 watts.

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2 years ago

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Answer:

solution:

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q_x = -k*(dT/dx)

dT/dx= (-20-50)/0.35==> -280 K/m

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Case (2)

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Case (2)

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Case (3)

q_x =-50*(160)*10^3==>-8 kW

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Case (4)

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T1=T2-dT/dx*L=40+80*0.25==> 60° C

Case (5)

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T1=T2-dT/dx*L=30-200*0.25==> -20° C

note:

all graph are attached

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3 years ago