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Sladkaya [172]
3 years ago
12

a bucket of water of mass 20kg is pulled at a constant velocity up to a platform 40 meters above the ground. this takes 10 minut

es , during which time 5kg of water drips out at a steady rate through a hole in the bottom . find the work required to raise the bucket to the platform.
Physics
1 answer:
erma4kov [3.2K]3 years ago
5 0
<span>Taking into account the information above, we know the average mass of the bucket of water may be m=20-5/2=17.5kg. As the bucket of water is pulled at a "constant velocity" the work required to raise the bucket to the platform transformed into the potential energy of the bucket of water. That is why it should be W=mgh=17.5*9.8*40=6860J</span>
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artcher [175]

Answer:

W_apparent = 93.1 kg

Explanation:

The apparent weight of a body is the weight due to the gravitational attraction minus the thrust due to the fluid where it will be found.

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The push is given by the expression of Archimeas

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we substitute

            W_apparent = ρ_al V g - ρ_fluide g V

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we calculate

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Answer:

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Which is an example of current electricity?
anyanavicka [17]

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4 0
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Leno4ka [110]

since child is moving along with the wagon and we need to find the acceleration of child inside that wagon then in this case the system of interest must be child + wagon

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Alenkinab [10]

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L' = \frac{25133 mi}{24h}=1047 mi

8 0
3 years ago
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