Answer:
W = 7.214 k J
Explanation:
given,
time of operation = 5 minutes
mass of ice melt = 5.90 × 10⁻² kg
L_f = 3.34 × 10⁵ J/kg
Work done = ?
We know work done
T_H is the heat from hot reservoir = 373 K
T_C is the energy released to cold reservoir = 273 K
now,
W = 7.214 k J
Answer:
<h2>The resistance is 100 ohms</h2><h2>The power has reduced 19%</h2>Explanation:
The formula for power is given as
Given data
power= 100 W
voltage= 100 V
Substituting into the power formula the resistance is
The resistance is 100 ohms
Now the power has been reduced by 10% (from 100 to 90V)
the power is
The power has reduced 19% from 100 watt to 81 watt