Answer:
The building was moved to a distance of, S = 510.2 m
Explanation:
Given data,
The mass of the building, m = 1.45 x 10⁶ kg
The work done to overcome the force of resistance, E = 1 x 10⁸ J
The force of resistance of the building, 2% of building weight
Fₓ = 2 x 1.45 x 10⁶ x 9.8 / 100
= 284200 N
The work done on the building,
E = Fₓ · S
∴ S = E / Fₓ
= 1.45 x 10⁶ / 284200 N
= 510.2 m
Hence, the building was moved to a distance of, S = 510.2 m
No. A substance floats or sinks in another substance because of
the densities of both of them.
If the density of the substance is more than the density of the other
one, it will sink. If less than the density of the other one, it will float.
I am not 100% sure. But I believe it is B!
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I to have no clue as well