Physical Sciences Grade 12 IEB Paper 1 2019 Data Sheet

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: PHYSICAL SCIENCES: PAPER I – DATA SHEET Page i of ii EXAMINATION DATA SHEET FOR THE PHYSICAL SCIENCES (PHYSICS) TABLE 1 PHYSICAL CONSTANTS NAME SYMBOL VALUE Acceleration due to gravity g 9,8 m⋅s–2 Speed of light in a vacuum c 3,0 × 108 m⋅s–1 Universal gravitational constant G 6,7 × 10−11 N⋅m2⋅kg–2 Coulomb's constant k 9,0 × 109 N⋅m2⋅C–2 Magnitude of charge on electron e 1,6 × 10–19 C Mass of an electron me 9,1 × 10–31 kg Planck's constant h 6,6 × 10–34 J⋅s 1 electron volt eV 1,6 × 10–19 J TABLE 2 PHYSICS FORMULAE MOTION v +u   v + vi  v= u + at or v f = v i + a∆t s=  = t or ∆x  f  ∆t  2   2  v= 2 u 2 + 2as or v f 2 = v i 2 + 2a∆x s= ut + 21 at 2 or ∆x = v i ∆t + 21 a( ∆t )2 FORCE AND MOMENTUM ∆p Fnet = J = ∆p= mv − mu ∆t Fnet = ma or or J = ∆p= mv f − mv i Fnet ∆t = m∆v Ffsmax = ms FN p = mv Fg = mg Ffk = µk FN WORK, ENERGY AND POWER W = Fs or W = F ∆x W P= P = Fv or W = F ∆x cos θ t 1 powerout E p = mgh Ek = mv 2 Wnet = ∆EK = efficiency × 100 2 powerin IEB Copyright © 2019 PLEASE TURN OVER

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: PHYSICAL SCIENCES: PAPER I – DATA SHEET Page ii of ii GRAVITATIONAL AND ELECTRIC FIELDS m1m2 F M F =G g= g =G r2 m r2 qq F kQ F = k 122 E= E= r q r2 ELECTRIC CIRCUITS q W I= V= t q = I (Rext + r ) emf V R= or I = Vload +Vinternal resistance emf 1 1 1 RS = R1 + R2 + ...... = + + ...... RP R1 R2 W P= or W = Pt t V2 W = VIt or W = I 2Rt or W = t R V2 P = VI or P = I 2R or P= R ELECTRODYNAMICS N ∆Φ Φ =BA cos θ emf = − F = IB sinθ ∆t Ns Vs VpI p = Vs Is = N p Vp PHOTONS AND ELECTRONS hc c =fλ E = hf or E= λ 1 2 = W0 + EK (max) E W0 = hf0 EK (max) = mv max 2 IEB Copyright © 2019