Answer:
The SI units of the “A” is m (meters)
The SI units of the “B” is m/s^2
Explanation:
Given the distance = d meters.
Time taken to travel = t (seconds)
Function of the distance, d = A + Bt^2
Now we have given the above information and from the given distance function, we have to find the SI units of the A and B. Here, below are the SI units.
Thus, the SI units of the “A” is = m (meters)
The SI units of the “B” is = m/s^2
1. C. Upper Left
2. B. For about 90% of their lifetime
You can reduce cultivated fallow
Explanation :
We know that the resistance of the wire is given by :

Where
is the resistivity
l is the length of the wire
A is the area of the wire.
Another factor on which the resistance of wire depends is temperature. It is given by :
![R=R_{ref}[1+\alpha (T-T_{ref})]](https://tex.z-dn.net/?f=R%3DR_%7Bref%7D%5B1%2B%5Calpha%20%28T-T_%7Bref%7D%29%5D)
So, it is clear that the resistance of the wire is directly proportional to the temperature. It we want to decrease the resistance of the piece, its temperature should be decreased.
So, the correct option is (3) " decreasing the wire’s temperature ".