Question
6. A 3kWoven supplied with 9kJ of energy. How many seconds can it be run for? __
Answer
4.1
(310 Votes)
Mason
Master · Tutor for 5 years
Answer
### The oven can be run for 3000 seconds.
Explanation
## Step 1: Understanding the Problem### The problem gives us the power of the oven in kilowatts (kW) and the energy supplied to it in kilojoules (kJ). We are asked to find out how long the oven can run, in seconds, with the given energy. ## Step 2: Converting Power to Watts### Since power is given in kilowatts, we need to convert it to watts because the standard unit of power in the International System of Units (SI) is the watt. 1 kilowatt equals 1000 watts. ## Step 3: Converting Energy to Joules### The energy is given in kilojoules, so we need to convert it to joules because the standard unit of energy in the International System of Units (SI) is the joule. 1 kilojoule equals 1000 joules. ## Step 4: Calculating Time### The time for which the oven can run can be calculated by dividing the energy (in joules) by the power (in watts). This is because power is defined as the rate of doing work or the amount of energy transferred per unit time.