<span>There are several ways to change the frictional force between two objects. The first one is to modify the surfaces of each object that will come in contact with each other. The smoother they get, the less friction there will be. But if the surfaces become rougher, more friction will be generated. If you don’t want to alter the surfaces, you can simply add lubrication to reduce friction.</span>
The equivalent resistance of n resistors connected in parallel is given by

(1)
In our problem, the resulting resistance of the 5 pieces connected in parallel is

, and since the 5 pieces are identical, their resistance R is identical, so we can rewrite (1) as

From which we find

.
So, each piece of wire has a resistance of

. Before the wire was cut, the five pieces were connected as they were in series. The equivalent resistance of a series of n resistors is given by

So if we apply it at our case, we have

therefore, the resistance of the original wire was

.
Answer:
Explanation:
Lol thats big tufffffffffvffffffftg
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Answer:
0 m/s
Explanation:
if an object is dropped we know the initial velocity is zero when in free fall
90, since W=FxD so 30x3 is 90.