## yr

yr.- year(s)
- younger
- your

## yr.

abbreviation

- year
- your

## yr

Abbreviations

- year
- your

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- Thus if the plane is normal to Or, the resultant thrust R =f fpdxdy, (r) and the co-ordinates x, y of the C.P. are given by xR = f f xpdxdy,
**yR**= f f ypdxdy. - If the equation of this line, referred to new coordinate axes in the plane area, is written xcos a+y sin a - h=o, (3) R = f f p(h - x cos a - y sin a)dxdy, (4) zR= f fpx(h - xcos a - y sin a)dxdy, (5)
**yR**= f f py(h - x cos a - y sin a)dxdy. - The components of velocity of the moving origin are denoted by U, V, W, and the components of angular velocity of the frame of reference by P, Q, R; and then if u, v, w denote the components of fluid velocity in space, and u', v', w' the components relative to the axes at a point (x, y, z) fixed to the frame of reference, we have u =U +u' -
**yR**+zQ, v =V +v -zP +xR, w=W +w -xQ +yP. - Pwllheli commands a good view of Merionethshire and of the Snowdon range, with the entire sweep of Cardigan Bay, Carreg
**yr**ymbill (gimlet stone) at the mouth of the harbour, Abersoch and St Tudwal's Islands. - Among his publications were the well-known quarterly magazine Y Traethodydd (" The Essayist"), Gwyddoniadur Cymreig (" Encyclopaedia Cambrensis"), and Dr Silvan Evans's English-Welsh Dictionary (1868), but his greatest achievement in this field was the newspaper Baner Cymru (" The Banner of Wales"), founded in 1857 and amalgamated with
**Yr**Amserau (" The Times") two years later.

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