Answer:
Explanation:
The change in potential is then defined as the negative of the work done by that force. ... You can't have work done by gravity AND a change in gravitational potential energy. You have to do it one way or the other. This means that the most important step in solving work-energy problems is choosing a system.
the phenomenon is An object that has potential energy can transfer that energy into kinetic energy when the object begins to move, due to its mass or position. For example, a person jumping on a trampoline has potential energy when they reach the peak of a jump, and their force changes direction from upward to downward.
Answer:
first one :
the object will stay at the same speed and direction unless it is acted upon by an internal unbalanced force.
Answer:
8 s
Explanation:
Damping factor, F is given by
where Q is quality factor
Also, we know that the settling time, T is given by
where W is the resonant frequency.and substituting the first equation here we get
Since it takes 2% of final value to settle and considering 100 rad/s for resonant frequency and taking quality factor of 100 then
The answer is D!
Let me know if you need any help
Yes they are all correct
You can check your answers at
https://eesc.columbia.edu/courses/ees/climate/lectures/gen_circ/index.html