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1. ### Help with this momentum question? I found the deg but got Vf wrong. I used Pi= Pf where (50)(5.7)+(70)(4.8)=120Vf and found Vf=5.2m/s?

The calculation you used is for when both skaters are moving in the same direction. These skaters are moving at right angles; hence you have to find their common angle after the collision. Pre-collision, the...

2 Answers · Science & Mathematics · 06/03/2016

2. ### What is the recoil speed of the nucleus?

Pi = Pf Py-direction election = mu = (9.11x10^-3)(3.60x10^7) = 3.2786x10^-23 kg*N...

1 Answers · Science & Mathematics · 25/11/2009

3. ### How to find the work for an isothermal expansion?

...expansion of 5.00 mol of an ideal gas at temperature of 289 K from pi = 5.02 atm to pf = 2.58 atm. Let’s imagine that the expansion occurs as a piston of...

1 Answers · Science & Mathematics · 21/11/2010

4. ### how to solve this physics question?

1/C = 1/21 + 1/3 C=21/8 pF

2 Answers · Science & Mathematics · 11/07/2016

5. ### PHYSICS: CAPACITOR PROBLEM?

...we set k = 1. C = e0 A / d A = C d / e0 A = (100 pF ) (0.200mm) / (8.854x10^-12 A^2 s^4/kg m^3) A = 2259 mm^2 L^2...

2 Answers · Science & Mathematics · 19/06/2014

6. ### Magnetic Field, electron direction, & right hand rule?

...can explain it well: The idea behind EM motion is that the motion pf a particle, the direction of its field, and the direction of the force on it all exist...

1 Answers · Science & Mathematics · 23/05/2008

7. ### Help with questions about RLC Circuits?

...1/ω^2L C= 1/((2*3.14*34.6*10^3)^2*1.2)= 17.6322*10^-12= 17.632[ pF ] (b) E=40V , C=4.41pF, XC= 1/(2*3.14*34.6...

1 Answers · Science & Mathematics · 22/04/2013

8. ### Physics problems! I've tried everything..?

...direction of the ball as positive and using: impulse = change in momentum Ft = pf - pi F x 0.0257 = 0.0525xx(-27.1) - 0.0525x27.1 F x 0.0257= -2.8455...

2 Answers · Science & Mathematics · 13/03/2013

9. ### Momentum Question ... kinda simple but confusing to me...help for easy 10 points?

...20e3 m/s [given] (1) Pi = initial momentum = m * V (2) Pf = final momentum = (m/2) * V1 + (m/2) * V2 = (m/2) * (...

2 Answers · Science & Mathematics · 13/04/2012

10. ### do the power correction factor capacitors mostly exist in the motor ! if not, why ?

No, there is no room inside a motor to put a PF correction cap. It's much more easier and cheaper to install...

1 Answers · Science & Mathematics · 22/02/2011