Meter #2 is more precise.
There's no information here that tells us which meter is more accurate.
Answer:
Incomplete question: The masses of the blocks m₂ = 1.5 kg and m₃ = 2 kg
Explanation:
Given data:
L₁ = length = 0.85 m
L₂ = 0.25 m
L₃ = 0.5 m
m₂ = 1.5 kg
m₃ = 2 kg
Question: Find the unknown mass of the block 1 needed to balance the bar, m₁ = ?
The torque is zero (intermediate point of the bar)

Is negative because mass 1 is to the left of the coordinate system (see the diagram)

Yes
Explanation:
This chemical equation:

is balanced, because the number of atoms of each element is the same on the reactant side and on the product side. In fact:
- Mg: one atom on the left, one on the right
- I: 2 atoms on the left, and 2 on the right
- Br: 2 atoms on the left, and 2 on the right
So, the reaction is balanced.
The length of time that an oscillator is allowed to oscillate, as well as its damping coefficient.
<h3>What is the period of the oscillator, and what factors influence the amount of damping that it has?</h3>
In most situations, the equation may be expressed numerically as
When we look at the data and see that there are cycles between the timestamps t= 0s and t= 4s, we may conclude that it finishes three cycles once every four seconds. As a result, the length of time that is going to be necessary to finish one cycle of damping will be
t =4/3sec
t= 1.33s
In most situations, the equation for amplitude may be expressed analytically as
A=A_0e^{-bt}
Therefore
3=5e^{-12b}

Therefore
-0.511 = -12b lne

In conclusion, damping refers to an influence that either operates from inside an oscillatory system or acts on it and has the consequence of reducing or halting the system from oscillating. This impact might occur from either side of the system. In physical systems, damping is produced by processes that cause the energy that is stored in an oscillation to be lost. These processes are called dissipative. The collective name for these processes is "damping agents." The damping coefficient may thus be written as

Learn more about the damping coefficient by reading up on it.
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Answer:v
Explanation:
Given
Initially spring mass system is moving towards right with velocity 
Now if the spring is released left block moves towards left with a velocity 
As there is no external force applied on the system therefore the change in linear momentum is zero i.e. it is conserved
so center of mass continue to move towards the right with velocity v or we can say right block moves towards right with velocity
and left block moves with velocity 