According to the Big Bang theory, after the "Bang", the universe remained dark until about ___ later, when neutral atoms began f
2 answers:
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Answer:
The value of g = 0.6168 m/s².
Explanation:
Given that,
On a planet X,
Length of the pendulum(L) = 0.25 meters,
Time period of the pendulum(T) = 4 seconds.
We have to find the 'g' value on the planet.
The 'g' value on a planet can be found by a pendulum with help of the formula,
T = 2π ×
From this, g = 4π² ×
Using the above formula and substituting the values,we get,
g = 0.6168 m/s².
Part a)
Here in this we can use momentum conservation as there is no external force on it
here we know that
now by above equation
Part b)
Final kinetic energy of the system
Initial Kinetic energy of the system will be
So here kinetic energy is decreased for this system
final energy is less than initial energy