math, HELP ME PLEASE!!!
2 pi r = 220 so r = 110/pi A = pi r^2 A = pi (110)^2/pi^2 = 12100/pi = 3854 m^2
math, HELP ME PLEASE!!!
been there, done that
math, HELP ME PLEASE!
average = (1/4)(66+56+55+63) = 60 percent error = 100 (64 - 60)/64 = 6.25 %
Physics
I have no idea what m1 and m2 are force down plane = m g sin T normal force = m g cos T friction force up plane = mu m g cos T net force down plane = net force up plane m g sin T = mu m g cos T tan T = mu Now if there is another mass and force in there, incorporate it
mathematics
ds/dt = (2 +3 t) (5) + (5 t - 4 )(3) = 10 + 15 t + 15 t - 12 = 30 t - 2 if t = 4 s / 2 ds/dt = 60 s - 2
physics
down force = m g up force = 2 F 2 F = 5 (9.81) F = 5(9.81)/2 Part 2, 60 up or 60 down? if 60 up down force = m g up force = F cos 60 + 2 F sin 60 = .5 F + 1.73 F = 2.23 F so 2.23 F = 5 * 9.81 F = 5 (9.81) / 2.23
Calculus
(x^2+4) dy/dx + y(2 x dx/dx) = 0 (x^2+4) dy + 2 x y dx = 0 dy/dx = -2 x y/(x^2+4) at (2,1) dy/dx = -2(2)/(5) = -4/5 = slope = m y = (-4/5) x + b 1 = (-4/5)+ b b = 9/5 so y = (-4/5) x + 9/5 5 y = -4 x + 9
Calculus
been there, done that
simple PHYSICS!!!
v^2/r to get v first the period T 250*10^6 yr (365 d/yr)(24 hr/d)(3600s/hr) = 7.88*10^15 seconds period speed = 2 pi r/T = 2 pi (2.55*10^20)/7.88*10^15 = 2.03 * 10^5 m/s Ac = v^2/r = (2.03*10^5)^2 /2.55*10^20 = 1.62 * 10-10 m/s^2
simple PHYSICS!
F = m a 40 = m(100) m = 0.4 kg
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