A positive rod is touched to a neutral sphere. There is a bar with positively charged particles attached to a ball with positive
and negative charged particles. Which best explains the arrow’s purpose in the diagram? It is showing the direction that protons move in, making the sphere negative. It is showing the direction that protons move in, making the sphere positive. It is showing the direction that electrons move in, making the sphere positive. It is showing the direction that electrons move in, making the sphere negative.
1 answer:
Answer: A is correct
It is showing the direction that protons move in, making the sphere negative
Explanation:
From the figure, since the charges on the rod are completely positive, it shows that the protons are transferring from the sphere to the rod leaving the rod negatively charged.
Therefore, It is showing the direction that protons move in, making the sphere negative.
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To solve the problem it is necessary to take into account the concepts related to simple pendulum, i.e., a point mass that is suspended from a weightless string. Such a pendulum moves in a harmonic motion -the oscillations repeat regularly, and kineticenergy is transformed into potntial energy and vice versa.
In the given problem half of the period is equivalent to 1 second so the pendulum period is,
From the equations describing the period of a simple pendulum you have to
Where
g= gravity
L = Length
T = Period
Re-arrange to find L we have
Replacing the values,
In the case of the reduction of gravity because the pendulum is in another celestial body, as the moon for example would happen that,
In this way preserving the same length of the rope but decreasing the gravity the Period would increase considerably.