Weegy: An object with a mass of 70 kilograms is supported at a height 8 meters above the ground. 5,488 joules is the potential energy of the object with respect to the ground. Solution: Potential energy = (70 kg) ? (9.8 m/s ) ? (8 m) Potential energy = 5,488 kg-m /s? Potential energy = 5,488 joules.
User: A company asks for efficiency data before buying a new machine from a manufacturer. The data suggests that with supplied energy at a rate of 1,600 W, the machine will do useful work at a rate of 1,540 W. What's this particular machine's efficiency?
A. 77.00%
B. 96.25%
C. 84.21%
D. 103.90%
Weegy: A company is interested in buying a new machine to replace their outdated equipment. However, before committing to the purchase, the company asks the manufacturer to provide data on a certain machine's efficiency. The data suggests that with a supplied energy at a rate of 1,600 W, the machine will do useful work at a rate of 1,540 W. The efficiency of this particular machine is 96.25%.
User: In choosing a new machine, your boss wants you to be as cost efficient as possible, but she also wants the best efficiency. Consider the following options. Which is your best option?
Option 1: This $5,000 machine is supplied energy at a rate of 1,900 W and does useful work at a rate of 1,786 W.
Option 2: This $4,500 machine is supplied energy at a rate of 1,450 W and does useful work at a rate of 1,300 W.
Option 3: This $4,750 machine is supplied energy at a rate of 1950 W and does useful work at a rate of 1833 W.
Option 4: This $4,750 machine is supplied energy at a rate of 2,000 W and does useful work at a rate of 1,822 W.
A. Option 2
B. Option 4
C. Option 3
D. Option 1
Weegy: Your boss tells you that she needs a decision by the end of the day about the machine you want to purchase for your new operation. You have four options, and your boss reminds you to be as cost-efficient as possible but that she also wants the best efficiency. Option 3: ...
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