In solids: All metals are good conductors of electricity as they contain free moving electrons. Non-metals doesn't conduct , but we consider Graphite the only non-metal that can conduct electricity for the presence of free moving electrons.
In Liquids ; Ionic compunds contains free moving ions , so they conduct electricity as well .
Questions that can be answered by doing the experiment and making observations scientifically:
1). How long will it take to perform the complete experiment ?
2). Will it be daytime or night-time when the experiment begins ?
3). What will be the range of outdoor temperatures during the experiment ?
4). How many times will progress of the experiment be suspended in order to take phone calls ?
The vehicle accelerates at 2.648 m/s².
We have:
Initial velocity, u = 50 miles per hour = 22.352 m/s
final velocity, v = 80 miles per hour = 35.762 m/s
Time, t = 5 seconds
The time in hours is:
t = 5 seconds
Now, the acceleration of the car can be calculated using the formula:
v = u + at
35.762 = 22.352 + a(5)
a(5) = 30
a = 2.682 m/s²
From the calculations above, the acceleration of the car is 2.682 m/s².
Ler more about acceleration here:
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When all parts of a circuit are composed of conducting materials,
then it's possible for current to flow in the circuit, and we say that
the circuit is "closed".
Answer:
ice melting
Explanation:
Because once it melts you can change it back to ice.
