2. show that there are 3.6×10^6 joules in a kilowatt - hour.\n3. what is the power when energy is consumed…

2. show that there are 3.6×10^6 joules in a kilowatt - hour.\n3. what is the power when energy is consumed at the rate of 350 j/s?\n4. how many watts are used when 7500 j are used in 5 h?

2. show that there are 3.6×10^6 joules in a kilowatt - hour.\n3. what is the power when energy is consumed at the rate of 350 j/s?\n4. how many watts are used when 7500 j are used in 5 h?

Answer

Explanation:

Step1: Recall power - energy relationship

Power $P=\frac{W}{t}$, where $P$ is power, $W$ is energy, and $t$ is time.

Step2: Solve for power in the second question

Given $W = 7500\ J$ and $t = 350\ s$. Substitute into the formula $P=\frac{W}{t}$. $P=\frac{7500\ J}{350\ s}=\frac{150}{7}\ J/s\approx21.43\ J/s$

Answer:

The power is approximately $21.43\ J/s$