Monday
March 30, 2015

Posts by Henry


Total # Posts: 10,340

Math
Y = x^2 + 8x - 11 h = Xv = -B/2A = -8/2 = -4. k = Yv = (-4)^2 + 8*(-4) - 11 = -27 V(h, k) = (-4,-27) Use the following points for graphing: (x, y). (-10,9) (-7,-18) (-6,-23) (-5,-26) V(-4,-27) (-3,-26) (-2,-23) (-1,-18) (2,9). X-intercepts: X1 will be negative. X2 will be ...
September 22, 2014

Physics
(245+r)/2 = 230 km/h 245 + r = 460 r = 460-245 = 215 km/h.
September 22, 2014

physics
Dx = Vo^2*sin(2A)/g = 33^2*sin33.6/9.8 = 65.13 m. 65.13m/2.74 = 23.8 or 23 Busses.
September 21, 2014

science
Correction: Tr = -Vo/g = -100/-10 = 10 s.=Rise time. h1 = Vo*Tr + 0.5g*Tr^2 h1 = 100*10 - 5*10^2=500 m. Above tower. Tf = 25 - 10 = 15 s. = Fall time. h1+h2 = 0.5g*Tf^2 = 5*15^2 = 1125 m. h1+h2 = 1125 500 + h2 = 1125 h2 = 1125-500 = 625 m.=Ht. of the tower.
September 21, 2014

science
Tr=-Vo/g = -100/-9.8=10.20 s.=Rise time. d = Vo*Tr + 0.5g*Tr^2 d = 100*10.20 - 4.9*10.20^2 = 510 m Above tower. Tf = 25 - 10.20 = 14.8 s. = Fall time. h+d = 0.5g*Tf^2 = 4.9*14.8^2 = 1073 m. h + d = 1073 h + 510 = 1073 h = 1073-510 = 563 m. = Ht. of the tower
September 21, 2014

Maths
Your problem will be easier to understand if you used punctuations and capital letters at the beginning of each sentence.
September 21, 2014

physics
Fx = 18-0.53N/m * 14m = 10.58 N. a = F/m = 10.58/6 = 1.76 m/s^2. V^2 = Vo^2 + 2a*d = 0 + 2*1.76*14 = 49.4 V = 7.03 m/s.
September 20, 2014

physics
See previous post: Sat, 9-20-14, 2:48 AM
September 20, 2014

nova
7a. V^2 = Vo^2 + 2g*h Vo^2 = V^2 - 2g*h = 25^2 + 19.6*15 = 919 Vo = 30.32 m/s. 7b. h = -(Vo^2)/2g = -(30.32^2)/-19.6 = 46.9 m. 8. a = F/m = 12/6 = 2 m/s^2 V^2 = Vo^2 + 2a*d Vo = 0, a = 2 m/s^2 d = 3 m. Solve for V.
September 20, 2014

physics
h = 78 * 6 = 468 m.
September 20, 2014

physics- HELP
See previous post: Fri, 9-19-14, 3:00 AM
September 19, 2014

Math
1.---3^1 = 3 cm. 2.---3^2 = 9 cm. 3.---3^3 = 27 cm. Y = 3^x. x = The # of hours. Y = The length. Y = 3^3 = 27 cm.
September 19, 2014

Pre-Calc
F(x) = x^2 - 8x + 15 15 = (-1)*(-15 = (-3)*(-5). Choose the pair of factors whose sum = B = -8. (X-3)(X-5) = 0 x-3 = 0 X = 3. x-5 = 0 X = 5.
September 19, 2014

math
Factors of 27y^3z = 1,3,5,9,27,y,y^2. Factors of 45x^2y = 1,3.5,9,15,45,x,y. CF = 1,3,5,9,y. GCF = 9.
September 19, 2014

physics
Dx = Vo^2*sin(2A)/g = 7.04 m Vo^2*sin(37.4)/9.8 = 7.04 Solve for Vo.
September 19, 2014

physics
a. Vo = 85.3m/s[45o] Xo = 85.3*Cos45 = 60.32 m/s. Yo = 85.3*sin45 = 60.32 m/s. h = 0.5g*t^2 = 587 m. 4.9t^2 = 587 t^2 = 119.8 Tf = 10.95 s. = Fall time. Dx = Xo * Tf = 60.32m/s * 10.95s=660 m. b. Y = Yo + g*Tf = 0 + 9.8*10.95 = 107.3 m/s. Tan A = Y/Xo = 107.3/60.32 = 1.77822 A...
September 19, 2014

physics
m*g = 16.3*9.8 = 159.74 N. Fp = 159.74*sin28 = 75 N. Fn = 159.74*cos28 = 141 N. Fp-Fk = m*a 75-Fk = m*0 = 0 Fk = 75 N. KE = 0.5m*V^2 = 0.5*16.3*1.8^2=26.41 J. Fp*d = KE-Fk*d 75 * d = 26.41-75*d 75d + 75d = 26.41 150d = 26.41 d = 0.176 m.
September 19, 2014

Physics
Vo = 38km/h = 38000m/3600s = 10.56 m/s. a = (V^2-Vo^2)/2d = (0-10.56^2)/0.018m = 6195 m/s^2. F = m*a = 850 * 6195 = 5,265,920 N. Maybe we shouldn't stop it on a dime!
September 19, 2014

Physics
Dx = Vo^2*sin(2A)/g = 4.50 m. Vo^2*sin(80)/9.8 = 4.50 0.1Vo^2 = 4.50 Vo^2 = 45 Vo = 6.70 m/s[40o]. = Initial velocity.
September 18, 2014

physic
V = Vo * a*t = 29 - 2*4 = 21 m/s. d = (V^2-Vo^2)/2a = (21^2-29^2)/-4 = 100 m.
September 18, 2014

Physics
Dx = Vo^2*sin(2A)/g Dx = 23^2*sin80/9.8 =
September 18, 2014

PHYYYYYSICS 9
See previous post.
September 18, 2014

PHYYYYYSICS 8
h = 0.5g*t^2 = 40 m. 4.9t^2 = 40 t^2 = 8.16 t = 2.86 s.
September 18, 2014

PHYYYYYSICS 5
V = 56Mph[75o] - (- 40Mph[210o]) = Vb = 56[75o] + 40[210] X = 56*Cos75 + 40*Cos210 = -20.15 Mph Y = 56*sin75 + 40*sin210 = 34.1 Mph Vb^2 = (-20.15)^2 + (34.1)^2 = 1568.83 Vb = 39.6 Mph = Brian's speed.
September 18, 2014

PHYYYYYSICS 4
Vp = Vo + Vw = 71i - 23 = -23 + 71i. Tan Ar = 71/-23 = -3.08696 Ar = -72.0o S. of E. A = -72.0 + 180 = 108o CCW.
September 18, 2014

PHYYYYYSICS 3
Vo = 31.7m/s[55o] Xo = 31.7*cos55 = 18.18 m/s. Yo = 31.7*sin55 = 25.97 m/x. Dx = Vo^2*sin(2A)/g=31.7^2*sin(110)/9.8 = 96.4 m.
September 18, 2014

PHYYYYYSICS 2
Vo = 39.7m/s[55o] Yo = 39.7*sin55 = 32.52 m/s. = Vertical component. Y^2 = Yo^2 + 2g*h h = (Y^2-Yo^2)/2g = (0-(32.52^2)/-19.6 = 54 m.
September 18, 2014

PHYYYYYSICS
Vo = 28.6 m/s[20o] Xo = 28.6*Cos20 = 25.18 m/s. Yo = 28.6*sin20 = 9.78 m/s. Dx = Xo * t = 25.18m/s * 1.05s. = 26.4 m
September 18, 2014

physics
V^2 = Vo^2 + 2g*h = 0 + 40*10 = 400 V = 20 m/s. 0.5g*t^2 = 10 m. 10*t^2 = 10 t^2 = 1 t = 1 s. Or V = Vo + g*t = 20 V = 0 + 20t = 20 t = 1 s.
September 18, 2014

physics
Where are the tables?
September 18, 2014

physical science
r = 100m/10.79s. = 9.27 m/s.
September 18, 2014

physical science
Superfly: Mass = 1*10^-3 kg V = 840*10^6km/h = 840*10^9m/3600s. = 2.333*10^8 m/s. Momentum = M*V = 1*10^-3 * 2.33*10^8 = 2.33*10^5. Locomotive: Mass = 20,000kg V = 40km/h = 40,000m/3600s = 11.11 m/s. Momentum = M*V = 2.*10^4 * 11.11 = 2.22*10^5. Superfly has the greater ...
September 18, 2014

physics
(Vs-Vw)t1 = 750 m. (1.10-0.4)t = 750 0.7t1 = 750 t = 1071.4 s. = 17.9 min. = Time to swim upstream. (1.10+0.4)t2 = 750 m. 1.5t2 = 750 t2 = 500 s. = 8.33 min. = Time to swim downstream. t1+t2 = 17.9 + 8.33 = 26.2 min. = Time to swim upstream and back. t3 = d/V = (750+750)/1.1...
September 16, 2014

science
1a. F2*d2 = F1*d1 100*d2 = 300*0.5 = 150 d2 = 1.5 m. 1b. 150*d2 = 300*0.5 = 150 d2 = 1.0 m.
September 16, 2014

Physics
All angles are CCW. 459km/h[140o] + Vw = 498km/[156o] Vw = 498[156] - 459[140] X = 498*Cos156 - 459*Cos140 =-103.3 km/h Y = 498*sin156 - 459*sin140 = -92.48km/h Tan Ar = Y/X = -92.48/-103.3 = 0.89530 Ar = 41.84o = Reference angle. A = 41.84 + 180 = 221.84o CCW = 41.84o S. of W...
September 16, 2014

physics
Vo = 500m/s[30o] Xo = 500*cos30 = 433 m/s. Yo = 500*sin30 = 250 m/s. Tr = -Yo/g = -250/-9.8 = 25.5 s. = Rise time. Tf = Tr = 25.5 s. = Fall time. Tr+Tf = 25.5 + 25.5 = 51 s. = Time in air. Dx = Xo*(Tr+Tf) = 433*51 = 22,083 m. = Distance travelled by the shell. D = Dx + Dt = 22...
September 16, 2014

physics
Fap-Fk = m*a 350-Fk = 38*7.3 = 277.4 -Fk = 277.4-350 = -72.6 Fk = 72.6 N. = Force of kinetic friction.
September 15, 2014

Phsics
Incomplete.
September 15, 2014

math
V=6-60=-54 Mi/h = -54Mi/h * 1600m/Mi * 1h/3600s = -24 m/s = 24 m/s Due South.
September 15, 2014

math
h = 1.9 m. Dx = 30 m. h = 0.5g*t^2 = 1.9 m. 4.9t^2 = 1.9 t^2 = 0.388 Tf = 0.623 s. = Fall time. Dx = Xo * Tf = 30 Xo * 0.623 = 30 Xo = 48.2 m/s. = Initial speed.
September 15, 2014

Physics
F = m*a = 15 * 0.7 = 10.5 N. Work = F*d = 10.5 * 12 = 126 Joules.
September 15, 2014

Physics
V = Vo + a*t t = (V-Vo)/a = t = (5.37*10^5-2.24*10^5)/2.2*10^14 = 3.13*10^5/2.2*10^14 = 1.42*10^-9 s.
September 15, 2014

physics
Incomplete.
September 15, 2014

physics
Xo = 26.4 m/s. Dx = 18.4 m. Tf = Fall time. Dx = Xo*Tf = 26.4 * Tf = 18.4 m. Tf = 0.697 s. h = 0.5g*Tf^2 = 4.9*0.697^2 = 2.38 m.
September 15, 2014

physics
Vo = 36m/s[24o] Xo = 36*cos24 = 32.9 m/s. Yo = 36*sin24 = 14.64 m/s. h = (Y^2-Yo^2)/2g = (0-(14.64^2))/-19.6 = 10.94 m.
September 15, 2014

physics
Xo = 25 m/s. d = 50 m Tf = Fall time. d = Xo*Tf = 25 * Tf = 50 m Tf = 2 s. h = 0.5g*Tf^2 = 4.9*2^2 = 19.6 m.
September 15, 2014

physics
h = 0.5g*t^2 = 1.9 4.9t^2 = 1.9 t^2 = 0.388 Tf = 0.623 s. = Fall time. D = Xo*Tf = 4.9m/s * 0.623s = 3.05 m.
September 15, 2014

physics
F = 365N[228o]CCW+224N[334o]CCW+488N [102o]CCW. Fx=365*Cos228 + 224*Cos334 + 488*cos102 = -144.4 N. Fy=365*sin228 + 224*sin334 + 488*sin102 = 107.9 N. Tan Ar = Fy/Fx = 107.9/-144.4 = -0.74718 Ar = -36.8o = Reference angle. A = -36.8 + 180 = 143.2o CCW = 36.8o N. of W. F = Fx/...
September 15, 2014

physics
a. d = 110-Vo*t = 110 - 20*0.7 = 96 m. b. a = (V^2-Vo^2)/2d = (0-20^2)/192 = -2.08 m/s^2. c. V = Vo + a*t = 0 t = -Vo/a = -20/-2.08 = 9.60 s.
September 15, 2014

Physics
a. h = ho+(V^2-Vo^2)/2g=(0-(5^2))/-19.6 =2.78 m. No. b. V^2 = Vo^2 + 2g*h Vo^2 = V^2-2g*h = 0 + 19.6*3.95 Vo^2 = 77.42 Vo = 8.8 m/s. c. V^2 = Vo^2+2g*h = 5^2 + 19.6*3.95 = 102.42 V = 10.12 m/s. Change = 10.12-5 = 5.12 m/s.
September 15, 2014

Math
In how many arrangements of the letters BERKELEY are all three E's adjacent? I think its (5!)*(6) i'm looking for some clarification.
September 14, 2014

physics
a. Tan A = 48/77 = 0.62338 A = 31.94o Tan31.94 = Vc/1.2 Vc = 1.2*Tan31.94 = 0.748 m/s = Speed of the current. b. Vs = 1.2/Cos31.94 = 1.414 m/s = Speed of swimmer. c. The current shifted the swimmer 31.94o E. of the desired point. To offset the affect of the current, the ...
September 10, 2014

physics
Vp + Vw = 314i Vp + 71 = 314i Vp = -71 + 314i Tan Ar = 314/-71 = -4.42254 Ar = -77.26o = Reference angle. A = -77.26 + 180 = 102.74o CCW = 12.74o W. of N.
September 10, 2014

Physics
(Vs-Vc)t1 = 208 km. (Vs+Vc)t2 = 208 km. Vs*t1-Vc*t1 = 208 Vs*t2+Vc*t2 = 208 Eq1: 21.7Vs - 21.7Vc = 208 Eq2: 20.3Vs + 20.3Vc = 208 Multiply Eq1 by 20.3 and Eq2 by 21.7 and add the Eqs: 440.51Vs - 440.51Vc = 4222.4 440.51Vs + 440.51Vc = 4513.6 Sum: 881.02Vs = 8736 Vs = 9.92 km/h...
September 10, 2014

physics
Vp + Vw = -226 m/s. Vp + 32i = -226 Vp = -226 - 32i Tan Ar = -32/-226 = 0.14159 Ar = 8.06o = Reference angle. A = 8.06 + 180 = 188.06o,Q3. = 8.06o S. of W. = Direction.
September 10, 2014

math
Incomplete.
September 10, 2014

Physics
Dx = Xo*T = 10.18 * 3.30 = 33.6 m. h = (Y^2-Yo^2)/2g h = (-15.13)^2-(17.21^2)/-19.6 = ( 228.92-296.18)/-19.6 = 3.43 m. = Y.
September 10, 2014

Physics
Vo = 20m/s[59.4o] Xo = 20*cos59.4 = 10.18 m/s. Yo = 20*sin59.4 = 17.21 m/s. X = Xo = 10.18 m/s. Does not change. Y = Yo+g*t = 17.21 - 9.8*3.30=-15.13 m/s Downward.
September 10, 2014

science
Volume.
September 10, 2014

algebra
13h/0.5mi. = 26 h/mi. with new machine. d1 = 2h * 1mi/26h = 2/26= 1/13 Mi. by new machine. d2 = 13/26 - 2/26 = 11/26 mi. remaining. 15h/0.5mi. = 30 h/mi. with old machine. T = (11/26)mi * 30h/mi = 12.69 h.
September 10, 2014

algebra
X oz. @ $3.50/oz. (30-X) oz. @ $7.00/oz. 3.50x + 7.00(30-x) = 6.30*30 3.5x + 210 - 7x = 189 -3.5x = 189 - 210 = -21 X = 6 oz. @ 3.50/oz. 30-X = 30-6 = 24 oz. @ $7.00/oz.
September 10, 2014

algebra
Invested $X @ 4%. Invested $(14,000-X) @ 2.5%. 0.04X + 0.025(14000-X) = $458. Solve for X.
September 10, 2014

physics
h = 0.5g*t^2 = 1.19 m. 4.9t^2 = 1.19 t^2 = 0.243 Tf = 0.493 s. = Fall time. Tr = Tf = 0.493 s. = Rise time. Tr+Tf = 0.493 + 0.493 = 0.986 s. = Time in air.
September 10, 2014

Trig
We draw 2 rt. triangles with a common ver. side: 1. Draw a hor. line with points A, B, C. AB = 25Ft, BC = X Ft. 2. Draw ver. line CD and label it h. 3. Draw AD which makes a 44o angle with AC. Draw BD which forms a 65o angle with BC. Tan65 = h/X h = X*Tan65 = 2.14X Tan44 = h/(...
September 10, 2014

Math Problem (please help)
a. d = (120N/265N) * 0.15m b. (F/265) * 0.15 = 0.30 0.15F = 79.5 F = 530 N.
September 10, 2014

physics
1. Vo = a*t = 2.59 * 19 = 49.21 m/s. d1 = 0.5a*t^2 = 0.5*2.59*19^2 = 467.5 m. 2. d2 = Vo*t = 49.21 * (2.15*60)=6348 m. 3. V = a*t = -9.08 * 5.42 = -49.21 m/s. V-Vo = 49.21-49.21 = 0 = Final velocity. d3 = (Vf^2-Vo^2)/2g. Vf = 0 d3 = -(Vo^2)/2g = -(49.21^2)/-19.6 = 124 m. a. D...
September 10, 2014

physics
Vo = a*t = 28 * 9.5 = 266 m/s. ho = 0.5a*t^2 = 14*9.5^2 = 1264 m. h = ho + (V^2-Vo^2)/2g h = 1264 + (0-(266^2)/-19.6 = 4874 m. = 4.874 km.
September 10, 2014

physics
Tr = 3.70s/2 = 3.85 s. = Rise time. Tr = -Vo/g = 3.85 s. -Vo/-9.8 = 3.85 -Vo = -37.73 Vo = 37.73 m/s.
September 10, 2014

physics
1st Stone: 4.9t^2 = 49 t^2 = 10 Tf = 3.16 s. = Fall time. 2nd stone: h = Vo*t + 0.5g*t^2 = 49 t = 3.16-1 = 2.16 s. = Fall time. Vo*2.16 + 4.9*2.16^2 = 49 2.16Vo + 22.86 = 49 2.16Vo = 49-22.86 = 26.14 Vo = 12.1 m/s. = Initial velocity.
September 10, 2014

Physics
Fp = mg*sin30 = Force parallel to the incline. a = Fp/m = mg*sin30/m = g*sin30 = 9.8*0.5 = 4.9 m/s^2.
September 10, 2014

Physics
a. Vo = 12m/s[8o] Xo = 12*cos8 = 11.88 m/s. Yo = 12*sin8 = 1.67 m/s. Tr = -Yo/g = -1.67/-9.8 = 0.170 s. = Rise time. h = ho + (Y^2-Yo^2)/2g h = 1.67 + (0-(1.67^2))/-19.6 = 1.74 m. Above gnd. d = 0.5g*t^2 = 1.74-1.0 4.9*t^2 = 0.74 t^2 = 0.151 Tf = 0.389 s. = Fall time. Dx = Xo...
September 10, 2014

physics
m*g = 120kg * 9.8N/kg = 1176 N. = Wt. of the bed. Fp = 1176*sin37 = 707.73 N. = Force parallel to the incline. Fn = 1176*cos37 = 939.20 N. = Normal = Force perpendicular to the incline. Fap-Fp = m*a Fap-707.73 = m*0 = 0 Fap = 707.73 N. = Force applied parallel to the incline. ...
September 10, 2014

engineering science
m*g = 60 N. = Wt. of object. Fp = 60*sin17.5 = 18.04 N. = Force parallel to the incline. Fn = 60*cos17.5 = 57.22 N. = Normal = force perpendicular to the incline. Fap-Fp-Fs = m*a 44-18.04-Fs = m*0 = 0 Fs = 44-18.04 = 26 N. = Force of static friction.
September 10, 2014

physics
h = 4000*sin3 Dx = 3000 + 4000*cos3
September 9, 2014

physics
Va*t + Vb*t = Da + Db. 8.4t + 7.1t = 5.3 + 4.5 15.5t = 9.8 t = 0.63226 h = Time at which their paths cross. d = 4.5 - 7.1*0.63226 = 4.5 - 4.489 = 0.01097 km = 11 m. East of flagpole.
September 9, 2014

Physics
V = Vo + a*t = 16 m/s. 0 + 2.8*t = 16 t1 = 5.71 s. to reach 16 m/s. d1 = 0.5a*t^2 = 0.5*2.8*5.71^2 = 45.65 m d2 = V*t2 = 16 * 16 = 256 m. t1+t2+t3 = 5.71 + 16 + 3.6 = 25.31 s in motion. V = Vo + a*t = 0 16 + a*3.6 = 0 3.6a = -16 a = -4.44 m/s^2. d3 = (V^2-V0^2)/2a = (0-(16^2...
September 9, 2014

college algebra
The procedure is the same except the inequality sign is reversed when multiplying or dividing by a negative number.
September 9, 2014

math help
(y^3)^-2(y^2)^0/y^-3 = y^-6*y^0/y^-3 = y^-6/y^-3 = y^-3 = 1/y^3
September 9, 2014

physics
See previous post: Tue, 9-9-14, 9:45 AM.
September 9, 2014

physics
V = 86km/h = 86000m/3600s = 23.89 m/s. a=(V-Vo)/t = (23.89-0)/5.2 = 4.59 m/s^2
September 9, 2014

Algebra
E/A = 0.75 Replace E with A-D: (A-D)/A = 0.75 Multiply both sides by A: A-D = 0.75A A - 0.75A = D 0.25A = D D/A = 0.25
September 9, 2014

Algebra
N/S = 12 S = N/12 S/A = 8.50 Replace S with N/12: (N/12)/A = 8.50 N/12A = 8.50 Multiply both sides by 12: N/A = 102
September 9, 2014

Finance
Net Profit = $58,247-0.26*58,247-36014- 18361-2198-7821-3228 = $-24,519.22
September 9, 2014

Algebra
a. 8 Weights. b. 1, 3, 5, 7, 9, 11, 13, 15 oz. c. Same as b.
September 9, 2014

physics
Vavg = (X2-X1)/(t2-t1) Vavg = (-4.3-8.0)/(-6.9-3.5) =
September 9, 2014

math
X = -B/2A = -150/-0.0006 = 25,000 Units.
September 9, 2014

physics
2. Continued. When the 2nd stone catchup, they will be the same distance above gnd.: h1 = h2 30 + 15t - 4.9*t^2 = 40*t - 4.9t^2 The 4.9t^2 terms cancel: 30 + 15t - 40t = 0 -25t = -30 t = 1.2 s. To catchup. h = 40*1.2 - 4.9*1.2^2 = 48 - 7.06 = 40.9 m. Above gnd. = Height at ...
September 9, 2014

physics
1a. d1 = d2 V*t = 0.5a*t^2 15*t = 1*t^2 Divide by t: t = 15 s. 1b. r = a*t = 2 * 15 = 30 m/s. = Speed of officer. 1c. D = 15*t = 15 * 15 = 225 m. 2. 1st Stone: Tr = -Vo/g = -15/-9.8 = 1.53 s. = Rise time. h = ho + (Vo*t - 0.5g*t^2) h = 30 + (15*1.53 - 4.9*1.53^2) = 30 + 22.96...
September 9, 2014

math
-3(u-2v-4) = -3u+6v+12.
September 9, 2014

math
(16/10)m^2 = 1.6 m^2.
September 8, 2014

physics
Vo = 100m/s[50o] Xo = 100*cos50 Yo = 100*sin50
September 8, 2014

Math
Use the Quadratic Formula and get: X = 0.926, and -0.364.
September 8, 2014

Physicsl Science
V = a*t
September 8, 2014

Physics
h = 4.9t^2 - 5.66t = 106 h = 4.9t^2 -5.66t - 106 = 0 Use Quadratic Formula. t = 5.264 s.
September 8, 2014

physics
Incomplete.
September 8, 2014

Physics
a. X = A = -13 Units. Y = B = ? Z= A+B = 16.8 Units = Resultant. X^2 + Y^2 = Z^2 (-13)^2 + Y^2 = 16.8^2 Y^2 = 16.8^2 - (-13)^2 = 282.24 - 169 = 113.24 Y = 10.64 Units = B. b. Tan Cr = Y/X = 10.64/-13 = -0.81846 Cr = -39.3o = Reference angle. C = -39.3 + 180 = 140.7o CCW = 39....
September 8, 2014

Physics
a = g = 9.8 m/s^2.
September 8, 2014

Geometry
TS = RS + TR
September 8, 2014

physics
a = 24/5.8 = 4.14 m/s^2.
September 8, 2014

math 3
An integer IS a whole number.
September 8, 2014

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