Answer:
Gravitational potential energy = 524.85 kJ
Explanation:
Refer the figure.
Gravitational potential energy = mgh
Mass, m = 75 kg
Acceleration due to gravity, g = 9.81 m/s²
We have
Gravitational potential energy = 75 x 9.81 x 713.36 = 524854.62 J = 524.85 kJ
I dunno, I guess to see if you could get a different answer
The answer is probably going to be b or d. hope that helped
The water temperature rises from 25*C to 28.4*C, thats 3.4*C so the heat absorbed is
<span>mass x change in temp x shc </span>
<span>= 0.150 x 3.4 x 4186 </span>
<span>=2134.86J </span>
<span>Now the bolt release the same energy </span>
<span>So mass x change in temp x shc = 2134.86J </span>
<span>0.085 x (85-28.4) x shc </span>
<span>So </span>
<span>shc = 2134.86 / (0.085 * 56.6) </span>
<span>= 443 J/KgC</span>
Kinetic friction, for example, generally turns energy into heat, and although we associate kinetic friction with energy loss, it really is just a way of transforming kinetic energy into thermal energy. The law of conservation of energy applies always, everywhere, in any situation. ?