What is the Possible Energy Collected in kJ if the power striking an oven 53.2 cm by 44.5 cm is 1394.0 watt/meters squared over 60.5 minutes?

Question

What is the Possible Energy Collected in kJ if the power striking an oven 53.2 cm by 44.5 cm is 1394.0 watt/meters squared over 60.5 minutes?

Answer 1

Find area of oven:

53.2 cm x 44.5 cm = 2367.4 cm²

FInd total wattage:

2367.4 cm² x 1x10^-4 m²/ cm² x 1394.0 watt / m² = 330.0 watts

To find kJ of energy, we need to include the time of 60.5 minutes. Since joules (J) = watts (W) x t (time in sec), we perform the following calculation:

330.0 W x 60.5 min x 60 sec/min = 1,197,900 Wsec = 1,197,900 J x 1 kJ/1000 J = 1198 kJ = 1.20x10³ kJ