Circle the term that best completes each of the following sentences.
- A chemical bond joins atoms / electrons
together in a water molecule.
- The four valence electrons of a carbon atom are
in its innermost / outermost energy level.

How dumb can you be, use your brain.

i don't know that i agree with that but what's the question ?

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards