Answer:
You see things happen much sooner than you hear them.
Explanation:
Light travels about a million times as fast as sound.
When the ball hits the bat , it will take about a million times longer to hear the crack of the bat than to see it.
What you see is almost instantaneous.
There will be a delay until you hear the sound.
<span>the formation of a gas
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Answer:
<em>The reactance is 80 Ω</em>
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Explanation:
Inductance H = 2 H
voltage v = 10 V
angular speed ω = 40 rad/s
The reactance of an inductive ac circuit ωL
40 x 2 =<em> 80 Ω</em>
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The current in the circuit is = V/ = 10/8 = 1.25 A
Answer:
(a)
(b) The particles of the formed barium sulfate remain suspended in the aqueous media forming a colloid.
Explanation:
Hello,
In this case, when solutions of barium chloride and sodium sulfate are mixed, the following chemical reaction is carried out:
Thus, we can notice that the product barium sulfate remains solid since its solubility in aqueous media is very low, for that reason at the beginning the solution becomes cloudy as its particles remain suspended in the water forming a colloid. Nevertheless, after some days, the suspended particles get precipitated by the effect of the gravity, therefore, we observe the solid on the bottom of the beaker.
Regards.