Which chemical equation represents a redox reaction? HELP ME PLZ ASAP!!! A.) Ca(OH)2 +H2SO4 arrow CaSO4 + 2H20
B.) Na2CO3 + H2S arrow H2CO3 + NaS
C.) AgNO3 + NaCI arrow AgCI + NaNO3
D.) 2Ni + MgCI2 arrow 2LiCI + Mg

W= fd
where f is an applied force and d is the distance over which it is applied. when a parachuting skydiver is at constant velocity, he is experiencing "terminal velocity", the point at which his acceleration down is canceled out by air resistance. that means that the resisting force of the air is equal to his weight, but in the opposite direction. with this, we can solve for the work done by the force.
w = fd
w = (92.0)(9.81 m/s^2) (325)
w= 2.93 x 10^5 j
the value for work in this case is positive because it is pushing up on the skydiver, who has a downward force of gravity.
therefore the answer is 2.93 x 10^5 j

Ibelieve the answer is d. densityhope my answer has you : )

Ai think hope that

An electromagnet is a material in which the current produces electromagnetism and is passed to the core.  so to fill in the blanks, choices would be better if there were.an electromagnet is a magnet produced by electric current with a metal core