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### A 129 N object vibrates with a period of 4.65 s when hanging from a spring. Answer in units of N/m.?

ω = 2πf but T = 1/f so ω = 2π/T = √(

**k**/m) 4π²/4.65² =**k**/m so m*4π²/4.65² =**k**m = (129/9.81) so (129/9.81)*4π²/4.65² =**k**= 24 <<<<3 Answers · Science & Mathematics · 09/03/2020

field B =

**k***µ₀*N*I/L where**k**is the relative permeability... is the length so the answer depends on your value for**k**. Using**k**= 200 and plugging in the other values, I get...1 Answers · Science & Mathematics · 06/03/2020

Yes, use the equation for the Coulomb force: F =

**k***Q*q / d² so**k***Q*q = F*d² and this is...2 Answers · Science & Mathematics · 05/03/2020

A) just conservation of momentum 2.03

**k**g * 1.30m/s = (2.03 + 1.83)**k**g * V V = 0.684 m/s √√√ agreed B) initial KE = ½ * 2.03**k**g * (1.30m/s)² = 1.72 J final KE = ½ * 3.86**k**g * (0.684m/s)² = 0.902 J and so the change...1 Answers · Science & Mathematics · 27/02/2020

... one charge and also you should have used the given value of

**k**in the question (8.98755 × 10^9 ·m² /C²) (even though this precision ...1 Answers · Science & Mathematics · 09/02/2020

C =

**k***e*A/d, where C = capacitance in Farads**k**= relative permittivity e...1 Answers · Science & Mathematics · 08/02/2020

... at a distance r is given by Vₑ = kQ/r, where

**k**is the Coulomb constant: 8.99 × 10⁹ N·m²/C²...2 Answers · Science & Mathematics · 07/02/2020

V =

**k**(3µ)/0.14 = 193000 volts Potential from a charge is V = kQ/r in volts**k**= 1/4πε₀ = 8.99e9 Nm²/C² r is separation in ...1 Answers · Science & Mathematics · 09/02/2020

... - false so in your format, B, C 8d. dE =

**k***λ*z*dx / (z²+x²)^1.5 E =**k***λ*z*∫ dx / (z²+...1 Answers · Science & Mathematics · 08/02/2020

spring energy = work done + final KE ½kd² = µ

**k***m*g*0.050m + ½mv² When I plug in your values I get d = 0.107 m which should be rounded to 0.11 m = 11 cm1 Answers · Science & Mathematics · 07/02/2020

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