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- 49.) When you use electrical appliances you are using electrical energy based on the amount of the time electrical power is used. How much electrical energy is used by a small fridge that is rated at 350 watts when used for 8 hours? (E=Pt) a. 2.8 kWh b. 44 kWh c. 2,800 kWh1. Suppose you left a 150-W light bulb on continuously for one hour. If the electricity generation and transmission efficiency is 80%, how much chemical energy (in KJ) was transferred from the power plant 2. To what height would an object have to be raised so that its gravitational potential energy would equal the kinetic energy it would possess if it were moving at 5 m/s? (Hint, Potential E = Kinetic E) 3. According to the table below, what is the overall efficiency of the process for converting Fuel cell energy into fluorescent lighting in your home? (Use average efficiency ratings, Assume an electrical transmission efficiency of 90%)Which of the following equations represents a power relationship? Select one: f =0.005g-4 O b. s=t+4 O c. b= 5.01+7.33c O d. n = 87.3e100m а. ||
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