Calculate the net force of the following situation. ←10 newtons + →30 newtons
question 1 options:

←40 newtons

←20 newtons

→40 newtons

→20 newtons

The net force will be 20 N.

Explanation:

Given data:

F  = 30 N

F = 10 N

ΣF = ?

Solution:

Formula:

ΣF = + F  - F

ΣF = 30 N - 10 N

ΣF = 20 N

The net force will be 20 N.

→20 Newtons

Explanation:

These are two vectors are in opposite directions. Let's say;

  = 10 N

  = 30N

But moves in the positive direction (given in the question) as against tht of , so:

    = - 10 N

    = + 30N

The net force =   +

                       = -10 + 30

                       = + 20N

This shows that the net force is in the direction of force .

Thus, net force is →20 Newtons

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"