Match each phrase to the form of energy it represents. Tiles chemical potential energy electric energy vibrational energy motion
2 answers:
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Answer:
a) v=2.743m/s
b)
c) T=2.543N
Explanation:
First, calculate the height of the ball at the starting point:
At this point, just in the moment the ball is released, all the energy of the system is potencial gravitational energy. When it is at the bottom all the potencial energy is transformed into kinetic energy:
Solving for v:
if h is the height loss: (l-y')
v=2.743m/s
The centripetal acceleration is the acceleration caused by the tension force exercised by the string, and is pointing outside of the trayectory path (at the lowest point, directly dawn):
To calculate tension, just make the free body diagram of forces in the ball, noticing the existence of the centripetal acceleration:
Answer:
0.26315 s
Explanation:
The frequency of the ball tied to a string system is 3.8 rev/s.
That means in one second the ball will complete 3.8 revolutions.
The time period will be the reciprocal of this frequency
The time period is 0.26315 s
It can be also solved in the following way
The time period is 0.26315 s
Answer:
41 turns
Explanation:
= Induced emf = 12.4 mV
= Current changing rate = 0.0275 A/s
L= Inductance
= Average flux = 0.00285 wb
N = Number of turns
Change in flux is given by
Flux through each turn is given by
The number of turns is 41