Answer:
Conductors allow electric charges to move freely
 
        
             
        
        
        
Answer:
 law of conservation of energy is that a perpetual motion machine of the first kind cannot exist, that is to say, no system without an external energy supply can deliver an unlimited amount of energy to its surroundings
Explanation:
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Explanation:
Why are high tides found simultaneously on opposite sides of Earth? The tidal bulges occur on both sides of Earth that are aligned with the tide-generating body. The ocean water experiencing high tide rotates around Earth on a 12-hour cycle.
 
        
             
        
        
        
Answer: 0.0146m
Explanation: The formula that defines the velocity of a simple harmonic motion is given as 
v = ω√A² - x²
Where v = linear velocity, A = amplitude = 1.69cm = 0.0169m, x = displacement. 
The maximum speed of a simple harmonic motion is derived when x = A, hence v = ωA
One half of maximum speed = speed of motion 
3ωA/2 = ω√A² - x²
ω cancels out on both sides of the equation, hence we have that 
A/2 = √A² - x²
 (0.0169)/2 = √(0.0169² - x²) 
0.00845 = √(0.0169² - x²) 
By squaring both sides, we have that 
0.00845² = 0.0169² - x²
x² = 0.0169² - 0.00845²
x² = 0.0002142
x = √0.0002142 
x = 0.0146m