### A lens with f=+16cm is paired with a lens with f=−25cm. What is the focal length of the combination?

if these are 'thin' lenses and are touching 1/f = 1/f1 + 1/f2 I get about +44 cm When you get a good response, please consider giving a best answer. This is the only reward we get.

1 Answers · Science & Mathematics · 30/11/2020

While I don't think European nations are practicing martial law, their governments have far more leeway in implementing strict measures nationwide. That's really not possible in our country, so...

9 Answers · Politics & Government · 30/11/2020

Try these: https://www.youtube.com/watch?v=_mTFQbaT3Zc https://www.youtube.com/watch?v=rpbL8h-7jSY

2 Answers · Home & Garden · 29/11/2020

27 MHz, lambda = 11.103 m 14 cm = k√11.103 k = 4.202 2400 MHz, lambda = 0.125 m penetration = 4.202√0.125 penetration = 1.49 cm or simply Penetration at 2400 MHz = 14√(27/2400) = 1.48 cm .

3 Answers · Science & Mathematics · 28/11/2020

Let the base = "b" cm and height = "h" cm Total Surface Area of the box...

2 Answers · Science & Mathematics · 27/11/2020

You do not have to convert the 16 m into cm . Since the conversion from m to cm would be the same either way, they cancel out...

2 Answers · Science & Mathematics · 26/11/2020

..., so 0.0576 kg·m² = 2*0.500kg * r² r = 0.240 m = 24.0 cm so the two masses are 2*r = 48.0 cm apart. If you find this...

1 Answers · Science & Mathematics · 26/11/2020

That is what happens when checks and balances are thrown out to make it easier for people to do their thing. CA has no common sense at all and neither do the vast majority of their voters.

3 Answers · Politics & Government · 25/11/2020

14psi * 100in^2 = 1400 lb

2 Answers · Science & Mathematics · 26/11/2020

τ = 2(FR) = 2(120.0)(0.31) = 74.4 N•m Please remember to select a Favorite Answer from among your results.

1 Answers · Science & Mathematics · 24/11/2020