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A = 4k = 0i + 0j + 4k B = 8i + k = 8i + 0j +

**k****C**= 3i - 4j = 3i - 4j + 0k Now, (A • B) = (0*8 + 0*0 + 4*1) = 4...2 Answers · Science & Mathematics · 24/09/2012

If B and C are mutually orthogonal to A, then A • B = 0 and A • C = 0 A • B = 3 + 2 + 1 = 6 A • C = 1 - 8 + 1 = 0 A is orthogonal to C but not to B If B = 3i + j - k...

2 Answers · Science & Mathematics · 18/05/2009

Wavelength is the distance between two peak points on a sinusoidal oscialltaing wave: http://en.wikipedia.org/wiki/Wavelength Wave Vector is the magnitude and direction of the wave: http://en.wikipedia.org/wiki/Wave_vector Frequency is...

2 Answers · Science & Mathematics · 17/12/2013

Because n(

**k**) is an explicit function of**k**and thus it must be considered; reason is that the partial derivative in this case considers variations along the**k**axis and, most certainly, n will have a contribution to it.1 Answers · Science & Mathematics · 21/02/2013

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2 Answers · Science & Mathematics · 21/02/2013

CURRENT is the number of electrons that flow per second (specifically, one amp of current is a Couloub of electrons per second). If you drill a large hole and a small hole in a barrel of water, the CURRENT of water would be...

3 Answers · Science & Mathematics · 01/01/2009

Then, we have... (3i - 4j) + (4k x (8i +

**k**)) = (3i - 4j) + (32j - 32k) = 3i + 32j - 36k Good luck!1 Answers · Science & Mathematics · 30/09/2012

To get the diff in F, just subtract. To get

**C**or**K**, multiply that by 5/91 Answers · Science & Mathematics · 19/02/2009

250°C = (250 + 273 K) = 523 K 200g = 0.2kg First find the heat needed (Q1) to raise the silver from 523K to its melting point (1235K): Q1 = m.c.ΔT = 0.2 x 236 x (1235 - 523) Note Lf = 105kJ/kg...

1 Answers · Science & Mathematics · 17/03/2015

**K**=**C**+ 273 = -268 + 273 = 4 K So, B is the correct answer.4 Answers · Science & Mathematics · 29/10/2009

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