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A 3.8 kg object is lifted 12 meters. Approximately how much work is performed during the lifting?
A 3.8 kg object is lifted 12 meters. 446.9 is performed during the lifting. W = mgh W = (3.8 Kg)(9.8 m/s²)(12 m) W = 446.88 J or 446.9 J
Expert answered|jval2264|Points 196|
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Asked 7/19/2019 4:33:43 AM
Updated 111 days ago|12/30/2023 12:43:25 PM
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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?
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: This $4,750 machine is supplied energy at a rate of 1950 W and does useful work at a rate of 1833 W.- is you best option. ] (More)
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Asked 7/19/2019 5:00:26 AM
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A 7.5 kg block is placed on a table. If its bottom surface area is 0.6 m2, how much pressure does the block exert on the tabletop?
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Updated 8/16/2021 11:14:33 AM
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A 7.5 kg block is placed on a table. If its bottom surface area is 0.6 m2, 122.5 Pa pressure does the block exert on the tabletop. P = F/A = mg/A = (7.5 kg)(9.8 m/s²)/(0.6 m²) = 122.5 Pa.
Added 8/16/2021 11:14:33 AM
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