In an alternating current, the current flow is constantly changing direction within the circuit where in direct current, the current only travels in one direction
Time=speed/acceleration
Gravitaional Acceleration=9.8 m/s^2
Speed=24.5 m/s
Time=24.5/9.8=2.5 s
Answer:
The "new" moon phase is being shown because the moon shown is directly between the sun and earth and is not visible from the earth because of the brightess of the sun.
Answer:
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Explanation:
Lower pH means that the solution is more acidic
<em>A decrease of two units </em>means that the new solution is <em>100 times more acidic </em>than the original one:
The final equality means that the when the <em>pH decreases two units</em>, the new solution is <em>100 times more acidic</em>.
Use the same when the pH decreases from 7.0 to 4.0, which is three units of decrease:
That means that<em> the acid precipiation (pH = 4.0) is 1,000 times more acidic than pure water (pH = 7.0)</em>