The charges that are free to move in a metallic conducting wire and that are responsible for the flow of electric current are- a. the positively charged protons b. the positively charged electrons c. the neutrons of heavy metallic nuclei d. the negatively charged electrons e. the negatively charged protons

D) The negatively charged electrons

Electricity passes through metallic conductors as a flow of negatively charged electrons. The electrons are free to move from one atom to another. We call them a sea of delocalised electrons. Current was originally defined as the flow of charges from positive to negative. Please give me the brainliest answer?

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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