Answer:
You determine the net force of an object by adding up all of the individual forces.
Explanation:
If N is the number of forces acting on the body, the net force formula is:
= + + ....+
Where , , and as forces acting on a body.
When a body is at rest, the net force formula is given by
Fa = Applied force and
Fg = Gravitational force.
<u>Example:</u>
A truck is standing still and a force of 70 N is applied on it. If the frictional force is 20 N, then what will be the net force?
Solution:
Given
Applied force Fa = 70 N
Frictional force Ff = 20 N
The net force formula is given by
FNet = Fa + Ff
FNet = 70 + (-20)
FNet = 50 N
Therefore, the net force is 50 N
Answer:
7.98 g of glucose are needed to prepare 399 mL of glucose solution
Explanation:
2.0 % m/v
This data represents, a sort of concentration for solutions.
It means that, our solution contains 2 g of solute, in this case glucose, which are contained by 100 mL of solution.
We only have to make a rule of three, in order to solve the question:
In 100 mL of glucose solution, we have 2 g of solute
In 399 mL of glucose solution, we may have:
(399 . 2) / 100 = 7.98 g
Answer:
ummmmmmmmmmmmmmmmmmmmmmmm
C because D stands for delta therefore it signifies change