Answer:
Explanation:
make observations, draw conclusions, develop a hypothesis, analyze data.
I can't decide between A and B, but B seems more likely to me. Even though the molecules don't look like they're moving, the area of contact is slightly more compressed.
Oscillation is a type of periodic motion which repeats itself to and from about a point which is called mean position. The period of a Pendulum can be described as a ratio between the length and gravity as,

Here,
L = length
g = Gravity
If we rearrange to find the length we have that,

Our period is 2s and the gravity is 9.8m/s^2, then,


The simple required length of the pendulum must be 0.9929m
A. Velocity of planet and gravity between sun and planet
Explanation:
I don't understand this question
could you please explain