The increase in potential energy is ![5.95\cdot 10^4 J](https://tex.z-dn.net/?f=5.95%5Ccdot%2010%5E4%20J)
Explanation:
The gravitational potential energy gained by an object lifted above the ground is given by:
![\Delta PE = mg \Delta h](https://tex.z-dn.net/?f=%5CDelta%20PE%20%3D%20mg%20%5CDelta%20h)
where
m is the mass of the object
g is the acceleration of gravity
is the change in height of the object
For the beam in this problem, we have
m = 330 kg
![g=9.8 m/s^2](https://tex.z-dn.net/?f=g%3D9.8%20m%2Fs%5E2)
![\Delta h = 18.4 m](https://tex.z-dn.net/?f=%5CDelta%20h%20%3D%2018.4%20m)
Substituting, we find its gain in potential energy:
![\Delta PE=(330)(9.8)(18.4)=5.95\cdot 10^4 J](https://tex.z-dn.net/?f=%5CDelta%20PE%3D%28330%29%289.8%29%2818.4%29%3D5.95%5Ccdot%2010%5E4%20J)
Learn more about potential energy:
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brainly.com/question/10770261
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YOUR ANSWER IS:
When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.
Hope this helps. :)
Answer:
2.7 mV
Explanation:
A = 3.6 x 10^-3 m^2
B1 = 0.20 T, B2 = 1.4 T, t = 1.6 s
According to the Faraday's law of electromagnetic induction
e = - rate of change of magnetic flux
e = - dФ / dt
where, negative sign shows the direction of induced emf.
Ф = B x A
dФ / dt = A x dB / dt
e = A x dB / dt = 3.6 x 10^-3 x (1.4 - 0.2) / 1.6
e = 2.7 x 10^-3 V = 2.7 mV