Given what we know, we can confirm that the change in kinetic energy is a negative value, given that the <u>final value </u>will be zero.
<h3>What is kinetic energy?</h3>
- This is the energy of movement.
- As the car is in motion, it has kinetic energy.
- However, as the car slows down, it loses this energy.
- Once the car stops,<em><u> it no longer has kinetic energy. </u></em>
- Given that the change in kinetic energy is the <em><u>final value </u></em>minus the <em><u>initial</u></em>, and the final is zero, this will cause the change in kinetic energy for the car to be a negative value.
Therefore, since kinetic energy is the energy of movement, we can confirm that the change in kinetic energy for the car will be a negative value caused by the car coming to a complete stop.
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Answer:
Following entries can be regarded as numbers:
1.56e-9
1.9435
-4.99
Explanation:
According to the given rules, only "e" can be used for show power of 10. Furthermore, using space between numbers and including units (without justification) are not allowed. Under these rules let us consider each number given.
1) 1.56e-9
This satisfies all three conditions given above and hence, is a number. Simplified value is
2) 3.25E4
As we can only use "e" for exponents, use of "E" is wrong, therefore this entry cannot be considered as a number.
3) 2.54 m
Here a space and a unit "m" (meter - unit of length) is used and therefore this entry cannot be considered as a number.
4) 1.56 e-9
Here a space is used due to which this value is not declared a number.
5) 1.9435
This again satisfies all conditions and therefore is a number.
6) -4.99
This is also a number as the use of + or - sign is allowed.
7) 1.23 inches
Here a space and a unit "inches" (unit of length) is used again and therefore this entry is also not a number.
Catalysts are used in the oil industry to increase octane
ratings in gasoline. Octane ratings tell how much fuel has to be compressed to
promote better fuel ignition in some
cars. The catalytic effect that
would be most beneficial for the oil industry is that more products can be
formed from a given amount of material.
The total time is (1h=3600 s):
The current intensity I is the amount of charge Q that passes through a certain point in a time
:
Since we know the current,
, we can find how much charge has been trasferred from one terminal to the other in 6 hours: