All you need to do is to convert the velocity to meters per hour. Then multiply by 0.4 hours. I guess the answer was rounded up.
Answer:
Since then only three elements on the periodic table have been found to be ferromagnetic at room temperature - iron (Fe), cobalt (Co), and nickel (Ni). The rare earth element gadolinium (Gd) nearly misses by only 8 degrees Celsius.
Explanation:
Hi there,
Matter is sometimes invisible. Most invisible matters are gas because it consists of tiny air molecules.
Hope this helps!
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Dus4nR
Answer:
The resistance interval is 
Explanation:
From the question we are told that
The voltage is V = 9 V
The current is 
The maximum current would be

The minimum current would be

The maximum resistance is



The minimum resistance is



and 
The interval R lies is
