Question

Diesel generator burns 2 kg of diesel and produces 8 kW for in 60 minutes. How many joules does diesel give? How many Joules of electricity does diesel generator produce? How many Joules do go to exhaust? 1 kg of diesel gives 45 MJ (M = Mega =1000000).

Answer 1

Answer:

To calculate the total energy output of the diesel generator, you can use the formula:

Energy = Power * Time

Given that the generator produces 8 kW for 60 minutes, convert the time to seconds (1 minute = 60 seconds) and then use the formula:

Energy (Joules) = Power (Watts) * Time (seconds)

Energy = 8,000 W * (60 minutes * 60 seconds/minute)

Energy = 8,000 W * 3,600 s

Energy = 28,800,000 Joules

Now, to find out how many joules 2 kg of diesel can provide, you can use the information that 1 kg of diesel gives 45 MJ (45,000,000 Joules). Therefore, 2 kg of diesel would provide:

2 kg * 45,000,000 J/kg = 90,000,000 Joules

Now, to find out how many joules go to exhaust, you subtract the energy produced by the generator from the energy provided by the diesel:

Joules to exhaust = Energy from diesel - Energy produced by generator

Joules to exhaust = 90,000,000 J - 28,800,000 J

Joules to exhaust = 61,200,000 Joules

So, the diesel generator produces 28,800,000 Joules of electricity, and 61,200,000 Joules go to exhaust.