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For a solid sphere, the moment of inertia about an axis through its center is I = (2/5)mR² "roll without slipping" means that ω = v/R so the total KE is KE = ½mv² + ½Iω² = ...

2 Answers · Science & Mathematics · 03/06/2020

torque τ = F*r*cosΘ where Θ is measured from perpendicular. a) τ = 700N * 0.15m * cos0º = 105 N·m b) τ = 105N·m * cos40º = 80 N·m c) a longer wrench! Hope this helps!

2 Answers · Science & Mathematics · 03/06/2020

....org/content-standards/tasks/621 but replace 5cm, 3cm 14

**cm**by 5 inches, 1 inch, 8 inches One straight section is...3 Answers · Science & Mathematics · 03/06/2020

...2hv * dh/dt h^2 = 81 h = 9 1620 = 81 * v 20 = v dV/dt => 9^2 * 0.006

**cm**^3/hr + 2 * 9 * 20 * 0.003**cm**^3/hr => 0.003 * (2 * 9^2 + 2 * 9 * 20)**cm**^3/hr...1 Answers · Science & Mathematics · 03/06/2020

...dr =12pi(r_outer) dV/dt = dV/dr * dr/dt so when r_outer = 4.5

**cm**dV/dr = 12pi(4.5) = 54pi**cm**^3/**cm**dr/dt = 0.04**cm**/hour dV...2 Answers · Science & Mathematics · 03/06/2020

General method given here: https://stuff.mit.edu/afs/athena/course/8/8.02-esg/Spring03/www/8.02ch31we.pdf If you post your working, we can check/correct it. I answered another of your ‘last try’ questions a few...

2 Answers · Science & Mathematics · 02/06/2020

(a) To find velocity, balance the energy and work involved. Spring potential energy generated will balance with the final kinetic energy minus the work done by friction and work done by the applied force. ½kx² = ½mv² - fx - Fx...

1 Answers · Science & Mathematics · 31/05/2020

da/dt = 2

**cm**/min dA/dt = 5**cm**^2/min db/dt = ? a = 8 A = 93 A = (1/2) * a...1 Answers · Science & Mathematics · 01/06/2020

... + 9(1)] s(1.5) - s(1) = (13.5 - 27 + 13.5) - (4 - 12 + 9) s(1.5) - s(1) = 1

**cm**s(2) - s(1.5) = [4(2)³ - 12(2)² + 9(2)] - [4(1.5)³ - 12...1 Answers · Science & Mathematics · 30/05/2020

1 mole = 22.4 liters 22.4 liters × .005 = .112 liters = 112 cm³ ³√112 = 4.82

**cm**edge length.1 Answers · Science & Mathematics · 28/05/2020

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