Question #d04ce

2 Answers
TwOfSpades
May 25, 2017

a. d=(Pt)/Fd=PtF

Explanation:

Let's plug the work equation given to us W=FdW=Fd into the power equation given to us P = W/tP=Wt.

P = (Fd)/tP=Fdt

Now to get it into the forms that we see in the answers, we need to solve for dd. So we divide both sides by FF and multiply both sides by tt.

P/F = (Fd)/(tF)PF=FdtF
P/F = d/tPF=dt
(Pt)/F = (dt)/tPtF=dtt
(Pt)/F = dPtF=d

Giving us the answer of a

Hope that helps!

Ratnaker Mehta
May 25, 2017

Option (a).

Explanation:

P=W/t,...(1) and, W=Fd.......(2).

Subst.ing W" from "(2)" in "(1), "we get, "P=(Fd)/t.

:. Pt=Fd...."[Cross Multiplication]"

:. (Pt)/F=d....."[Division by "F].

Hence, (a) is the right option.

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