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skad [1K]
3 years ago
5

The man is pushing with a force of 75 N. The rock is not moving. This is an example of what kind of force?

Mathematics
1 answer:
olasank [31]3 years ago
3 0

Answer: Balanced Force

Step-by-step explanation:

The rock is not moving, this means that the rock is not accelerated.

By the second Newton's law, we know that:

Force equals mass times acceleration.

Then if we do not have acceleration, means that the net force is equal to zero.

This happens when we have balanced forces, meaning that the normal force that does the rock when the man pushes it, is equal in magnitude but in opposite direction, so the net force is equal to zero.

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3 years ago
The length of a string is L inches. Samantha cuts it into two unequal pieces such that the length of the small piece is 35% of L
skelet666 [1.2K]

Answer:

The shorter piece   x  =  8.4 in

The longer one    y  =  15.6 in

Step-by-step explanation:

If we cut  a string length  L  in to unequal  pieces we get two pieces

first one with length  x  and the other one with length  y

Let call  x  the smaller piece,  then   y = L  -  x will be the longer one

If   x  =  35 %    then

x  =  0,35* L     and

y = L -  x  =  L - 0,35*L      ⇒  y  =  0,65 L     ⇒ y  =  0.65*24

Now if L  =  24  in

x  =  0,35*24          ⇒               x = 8.4 in

and

L  -  x  =  0.65*L      ⇒       L - x  =  0.65*24     y  =  L  -  x  =  15.6 in

as way of verification you can add the length of the two pieces and find:

8.4  +  15.6  = 24 in

4 0
3 years ago
4y-9=15 how do I solve this
Makovka662 [10]
<span>4y-9=15
Add 9 to both sides.

4y = 24
Divide both sides by 4.

y = 6

The value of y is 6.</span>
4 0
3 years ago
Read 2 more answers
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