Physics

Physics, 16.09.2019 02:30, froyg1234

What is the definition of a vector?

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Physics, 13.09.2019 05:20, edjiejwi

Which of the following is not true about an ideal vector? a. a vector contains an rna primer. b. a vector contains a selectable marker. c. a vector contains an origin of replication. d. a vector may be a plasmid or bacteriophage. e. a vector has a restriction enzyme recognition site.

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Physics, 20.10.2019 20:10, monkey2865

Two particles a and b, move with constant velocities →v1 and →v2. at the initial moment their position vectors are →r1 and →r2 respectively. the condition for particles a and b for their collision is : (1)vector r1 - vector r2 = vector v1 - vector v2(2)vector r1 - vector r2/magnitude of (vector r1 - vector r2 ) = vector v1 - vector v2/ magnitude of (vector v1 - vector v2)(3)vector r1 . vector v1 = vector r2 . vector v2(4)vector r1 x vector v1 = vector r2 x vector v2

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Engineering, 25.10.2019 23:43, montanolumpuy

The vpython command norm returns the unit vector of a vector. remember that a unit vector has a length of one and points in the direction of the original vector. for exampe, if l = vector(0,3,0) then norm(l) = < 0,1,0> and, if l = vector(0,3,0) then norm(-l) = < 0,-1,0> additionally, if l = vector(0,3,0) then norm(5l) = < 0,1,0> and, for example, if m = vector(1,1,0) then norm(m) = < 0.707,0.707,0> . another example, if n = vector(2,3,0) then norm(m) = < 0.5547,0.83205,0> an for another example, if p = vector(1,2,3) then norm(p) = < 0.267261,0.534522,0.801784> if q = vector(3,4,0) then norm(q) =

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Mathematics, 25.10.2019 23:43, MileenaKitana

Given that v1, v2, · · · , vr are basis of a vector space v . suppose for some vector u in v , we have u = c1v1 + c2v2 + · · · + crvr, and the same vector u can also be expressed as u = k1v1 + k2v2 + · · · + krvr. show that ci must be equal to ki for all i = 1, 2, · · · r. do not cite any theorem, do it from definition, nothing fancy.

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