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1. ### In general, astronomical objects are not exactly electrically neutral. Suppose the Earth and the Moon each carry a charge of –1.27·106 C.?

Coulomb's law: F = k.q1.q2 /r² Newton's gravitational: Fn = G.m1.m2...

2 Answers · Science & Mathematics · 05/09/2019

2. ### suppose the position of a particle is i+3j-2k at t=2pi/3 sec, and suppose the particles velocity at any time t is v(t)=2sin(t)i+2cos(t)j+tk?

...position s(t) = ∫ v(t) dt s(t) = ∫ [2sin(t) i + 2cos(t) j + t k] dt = -2cos(t) i + 2sin(t) j + ½t² k + C...] and so unit T(t) = [2sin(t) i + 2cos(t) j + t k] / √[4 + t²] d) the tangential component of the acceleration...

1 Answers · Science & Mathematics · 29/06/2019

3. ### Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of 0.119 N...?

electrostatic force F = kQq / d² where k = 8.99e9 N·m²/C² first condition: -0.119 N = 8....

2 Answers · Science & Mathematics · 06/09/2019

4. ### A daredevil wishes to bungee-jump from a hot-air balloon 70.5 m above a carnival midway.?

...the event. from the preliminary test, we can find the spring constant k by summing forces to zero. kx - mg = 0 kx = mg...by the cord at max stretch is F = kx F = (k'/25.1)(30.4) F = (5(mg/1.65)/25.1)(30.4) F...

4 Answers · Science & Mathematics · 07/10/2019

5. ### Volume of balloon and temperature change?

21ºC = 294 K Constant pressure (Charles's law) V₁/T₁ = V₂/T₂ or V₁/V₂ = T₁/T₂ 1.1/4.5 = x/294 x = 72 K = –201ºC

1 Answers · Science & Mathematics · 13/07/2019

6. ### A mass-spring system oscillates with an amplitude of 5.80 cm. If the spring constant is 275 N/m and the mass is 582 g,?

1) E = 1/2 k A^2 E = 0.5 * 275 * 0.058^2 = 0.46 J 2) v = w A = sqrt(k/m) A v = sqrt(275/0.582) * 0.058 = 1.26 m/s 3) a = w^2 A = (k/m) A a = (275/0.582) * 0.058 = 27.41 m/s^2

2 Answers · Science & Mathematics · 08/08/2019

7. ### Chem Questions?

energy = k*Q*q / d where k is some constant so adcb then dacb If you find this helpful, please award Best Answer!

2 Answers · Science & Mathematics · 06/09/2019

8. ### Physics homework help?

First convert 0.47 atm = 47623 Pa. V = nRT/p = (2 mol)(8.3145 J/molK)(148 K)/(47623 Pa) = 0.0517 m^3 or 51.7 Liters.

3 Answers · Science & Mathematics · 11/04/2019

9. ### how far is q2 from q3?

F[1,2] = F[2,3] -k * Q[1] * Q[2] / r[1,2]^2 = -k * Q[2] * Q[3] / r[2,3...

2 Answers · Science & Mathematics · 11/08/2019

10. ### physics question??

... vector arithmetic. for the left charge Ex = 2µk/r² pointed right Ey = 0 for the right charge... in Newtons/coulomb OR volts/meter k = 1/4πε₀ = 8.99e9 Nm²/C²

1 Answers · Science & Mathematics · 28/08/2019