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Usimov [2.4K]
2 years ago
10

Three people push a piano on wheels with forces of 130 N to the right, 150 N to the left, and 165 N to the right. What is the st

rength and direction of the net force on the piano?
Physics
1 answer:
Irina-Kira [14]2 years ago
8 0

Answer:

45 N to the right possibly?

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A 4,000 kg boat floats with one-third of its volume submerged. if two more people get into the boat, each of whom weighs 690 n,
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The weightiness of the added water displaced is equivalent to the joined weight of the two extra people who come to be into the boat:


<span>m water g                   = 2 x 690 N</span>

<span>                                   = 1,380 N</span>

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The mass of the water displace is then


<span>m water g                   = 1,380 N</span>

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Compute the calculation for density for the volume of water displace and practice this outcome for the mass of the water displace to get the answer:


<span>p water                      = mass of water / volume of water</span>

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<span>volume of water        = mass of water / p water</span>

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4 0
3 years ago
If something is 50% efficient, how many joules of wasted energy will there be if 750J of energy is put in?
Andreas93 [3]

Answer:

<u><em>375 J</em></u>

Explanation:

<u><em>Total energy</em></u> = 750 J

<u><em>Efficiency</em></u> = 50%

<u><em>Wasted energy</em></u> = 50% [100% - 50%]

<u><em>Amount of wasted energy</em></u>

= 750 x 50%

= 750 x 0.5

= 375 J

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2 years ago
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