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mina [271]
2 years ago
12

Help asap please!!!!

Mathematics
1 answer:
Alex73 [517]2 years ago
5 0

Answer:

D. 84 square feet

Step-by-step explanation:

Hope this helps and have a nice day

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With the beam being held still at a height of 40 m, the crane breaks and the beam falls to the ground. Assuming no air resistanc
lapo4ka [179]
What we have so far:
Kinetic energy = 0. The reason behind that is because the beam is not moving at a height of 40m.
Gavity, g = 9.8m/s²
Height = 40m
Potential energy = mgh; this is equal to 0 because m, stands for mass and in this problem, we do not have a value for the mass of the beam. Hence, 0 x 9.8m/s² x 40m = 0. Potential energy = 0.

Solution:
We will use the equation of Total energy:
TE = potential energy + kinetic energy

TE = 0 + 0

∴ TE = 0

The answer is: Assuming no air resistance, the total energy of the beam as it hits the ground is 0.
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3 years ago
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Step-by-step explanation:

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This means that to find the missing angle, you would subtract 55 degrees from 90 degrees to get 25 degrees.

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