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1. ### Consider a particle of mass m = 18.0 kg revolving around an axis with angular speed ω.?

tangential velocity Vt = ω*r = 23*1.75 m/sec Ke = m/2*V^2 = 18/2*(23*1.75)^2 = 14,581 joule or J = m*r^2 = 18*49/16 KE = J/2*ω^2 = 9*49/16*23^2 = 14,581 joule

1 Answers · Science & Mathematics · 17/10/2019

2. ### Physics question regarding capacitors?

a. field E = σ / ε where ε = k*ε₀ so σ = Eε = 1.5e6N/C * 5*8.85e-12 C²...

1 Answers · Science & Mathematics · 13/10/2019

3. ### An 10000 kg freight car rests against a spring bumper at the end of a railroad track.?

...8200/18200)^2 this goes into the spring. 1/2 kx^2 = 1/2 m v^2 x^2 = m v^2 /k x = sqrt( m v^2 / k) = sqrt( 18200*(8.3 * 8200/18200)^2 / (3.2 * 10 ^ 5) ) = 0.89 m...

2 Answers · Science & Mathematics · 12/10/2019

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. ### Physics: Springs: A block of mass 1.4 kg is attached to a horizontal spring that has a force constant 1100 N/m as shown in the figure...?

...dv/dx = -kx + 4.2 we want the point where dv/dx = 0, which is where x = 4.2 / k = 4.2 / 1100 = 0.0038 m = 0.38 cm ½mv² = 0.22 - ½...

1 Answers · Science & Mathematics · 18/10/2019

6. ### thermodynamics?

... = 8.314 J/mol·K So you can compute the temperature change in K (which is the same as the temperature change in ºC, since for CHANGES...

1 Answers · Science & Mathematics · 24/09/2019

7. ### line of charge of electric fields?

...x / √(x²+y²) So, for Ey I get dEy = k*λ*dx*y / (x²+y²)^(3/2) so Ey = k*λ*y ∫ dx / (x²...

3 Answers · Science & Mathematics · 23/09/2019

8. ### Physis Tension Question?

... / A₂Y₂ for nylon ₁ + and copper ₂ 1m * 5e-5/K * -20K + 1m * 1.6e-5/K * -20K = F₁*1m / (π/4)(0.005m...

1 Answers · Science & Mathematics · 22/09/2019

9. ### Physics Question?

...2*sin 2Θ since V and Θ are the same, then R = k/g and this implies that thr range on the Moon is 6 ...

3 Answers · Science & Mathematics · 23/09/2019

10. ### We have three isolated spherical shells on which we put positive charges. For each shell, this next figure shows?

...radius and also the largest potential (from the graph). Since potential = k * Q/r, it must also have the largest charge. Shell 3 must have...

1 Answers · Science & Mathematics · 18/09/2019