Pièce de résistance (in a meal) is more comonly called "le plat" or "le plat principal".
Because a flat piece of paper has a larger surface area and therefore more wind resistance. But in a crumbled piece of paper the wind resistance is less.
a guy is 'un gars' (familiar) or 'un mec' (more slangish) in French.
A longer wire has more electrical resistance because there is more wire material for the electrical current to pass through. This increased distance results in more collisions between the moving electrons and the wire atoms, which hinders the flow of current and creates more resistance.
The boy running with a piece of card in front will experience more air resistance compared to just the boy running alone. This is because the piece of card will create additional drag as it catches more air.
A flat piece of paper has a larger surface area exposed to the air, creating more air resistance compared to a crumpled piece that has a smaller surface area. This increased air resistance slows down the flat paper's motion more than the crumpled paper.
"Bourse" or more familiar "Sacoche" "porte-monnaie" is also right.
'nouveau travail' = formal 'nouveau boulot' = more familiar
A flat piece of paper has a larger surface area, creating friction with the air, or more air resistance. There is more air surrounding the piece of paper, and this slows it down. A crumpled piece of paper has less surface area to create friction, meaning less air resistance. This causes it to fall faster.
voulez-vous ceci / cela voulez-vous ça (more familiar)
A long piece of wire will have more resistance in it than a shorter one of the same material.
Other things (cross-section, material) being equal, a longer piece of conductor has more resistance (i.e., less conductance) than a shorter piece.
A cop is "un flic" (masc. - familiar) in French. More formally, a policeman is "un policier".