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1. ### Physics Question!!!?

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

2. ### Physics Question!!!?

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

3. ### A belt is stretched tightly over two wheels having a radii of 1 and 5 inches, respectively. If the center of the wheels...?

....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

4. ### Need help ?

...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

5. ### Helppppppppp?

...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

6. ### Flux due to wire... pleassse helppp last try...?

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

7. ### A spring with k=130.0 N/m on surface is mounted to a vertical wall . A 5.00-kg box on the surface is placed in front of the spring. The coef?

(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

8. ### altitude increasing problem (calculus)?

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. ### Calculus questions distance?

... + 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

10. ### A cardboard cube constructed to have the same volume as 0.0050 mole of hydrogen gas at STP?

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