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1. ### Given 3 vectors: A = 4k B = 8i + k C = 3i - 4j then C (A • B) =_______?

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

2. ### What is the minimum amount of heat needed to completely melt 200 g of silver(melting point=1235 K ; c =236J/kg K ; Lf=105kJ/kg)at 250 degree C ?

250° C = (250 + 273 K ) = 523 K 200g = 0.2kg First find the heat needed (Q1) to...

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

3. ### What is a)wavelength,λ b)wave vector, k c )frequency, f d)frequency of this signal, ω?

...http://en.wikipedia.org/wiki/Radians Wavelength (λ) = speed of light ( c ) divided by the frequency (f), where c = 299,792,458 meters per ...

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

4. ### What is the value of k and c in this equation? T= k √n + c ?

... for another value of n, say n1, get another value of T = T1 = k √n1 + c . c = T0 T1 = k √n1 + T0 k = (T1 - T0)/√n1...

2 Answers · Science & Mathematics · 30/01/2009

5. ### Show that the vectors, A = i – 2j + k , B = 3i + - j + k , C = i + 4j +7k are mutually orthogonal to A.?

...2 + 1 = 6 A • C = 1 - 8 + 1 = 0 A is orthogonal to C but not to B If B = 3i + j - k , then A • B = 3 - 2 - 1 = 0 I think you got your...

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

6. ### Group velocity calculation for w= k * c /n( k )?

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

7. ### Determining k of probability density function?

The formula: f(V) = ( k / c )∙(V/ c )^( k -1)∙e^(-(V/ c )^ k ) represents a Weibull...distribution, which can defined be written as follows: f(V) = k ∙(V/V_max) for 0≤V≤V_max f(V) = 0 x>...

1 Answers · Science & Mathematics · 27/05/2009

8. ### A substance registers a temperature change from 20° C to 40° C . To what incremental temperature change does this?

c . 20 K

2 Answers · Science & Mathematics · 25/03/2012

9. ### At what temperature C do the molecules of nitrogen gas have an rms speed of 265 m/s?

... = sq rt (3RT / M) N2 = 28 g/mole Temp = C + 273C = K R = gas constant = 8.314 J/mol K 265 m/s = sq rt ( 3 * [8.314...

2 Answers · Science & Mathematics · 15/03/2010

10. ### help me in physics! The temperature of 1° C is the same of 1 K ?

...change in temperature of 1° C is the same as a change in temperature of 1 K . 0° C = 273 K 1° C = 274 K 2° C = 275 K 3° C ...

2 Answers · Science & Mathematics · 16/01/2013

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