Emily and Patrick are trying to lift their friend hunter onto a tree branch. Emilio is pushing hunter upward with a force of 250 N. Patrick is pushing hunter upward with a force of 310N. Earth’s gravity is pulling Hunter downward with a force of 520 N Assume all other forces on hunter are balanced. Which statement describes the forces on hunter ?

The forces are unbalanced, so there is net force on the hunter.

Explanation:

To know which option is correct, we shall determine the net force acting on the hunter.

From the question given above, the following data were obtained:

Force applied by Emilio (F₁) = 250 N

Force applied by Patrick (F₂) = 310 N

Force of gravity (F₉) = 520 N

Next, we shall determine the total force applied in lifting the hunter. This can be obtained as follow:

Force applied by Emilio (F₁) = 250 N

Force applied by Patrick (F₂) = 310 N

Total force applied (Fₜ) =?

Fₜ = F₁ + F₂

Fₜ = 250 + 310

Fₜ = 560 N

Finally, we shall determine the net force acting on the hunter. This can be obtained as follow:

Force of gravity (F₉) = 520 N

Total force applied (Fₜ) = 560 N

Net force (Fₙ) =?

Fₙ = Fₜ – F₉

Fₙ = 560 – 520

Fₙ = 40 N

Thus the net force acting on the hunter is 40 N

From the calculations made above, we can see that the net force acting on the hunter is 40 N.

Therefore, the correct answer to the question is:

The forces are unbalanced, so there is net force on the hunter.

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."