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Aloiza [94]
3 years ago
10

Temperature is generally proportional to a substance's _______.

Physics
1 answer:
daser333 [38]3 years ago
6 0

rotational kinetic energy of it's particles

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A particle of charge Q is fixed at the origin of an xy coordinate system. At t = 0 a particle (m = 0.959 g, q = 5.84 µC is locat
NemiM [27]

Answer:

8.66\times 10^{-6}\ C or 8.66\ \mu C.

Explanation:

<u>Given:</u>

  • Charge on the particle at origin = Q.
  • Mass of the moving charged particle, \rm m = 0.959\ g = 0.959\times 10^{-3}\ kg.
  • Charge on the moving charged particle, \rm q = 5.84\ \mu C = 5.84\times 10^{-6}\ C.
  • Distance of the moving charged particle from first at t = 0 time, \rm r=20.7\ cm = 0.207\ m.
  • Speed of the moving particle, \rm v = 47.9\ m/s.

For the moving particle to circular motion, the electrostatic force between the two must be balanced by the centripetal force on the moving particle.

The electrostatic force on the moving particle due to the charge Q at origin is given by Coulomb's law as:

\rm F_e = \dfrac{kqQ}{r^2}.

where, \rm k is the Coulomb's constant having value \rm 9\times 10^9\ Nm^2/C^2.

The centripetal force on the moving particle due to particle at origin is given as:

\rm F_c = \dfrac{mv^2}{r}.

For the two forces to be balanced,

\rm F_e = F_c\\\dfrac{kqQ}{r^2}=\dfrac{mv^2}{r}\\\Rightarrow Q = \dfrac{mv^2}{r}\times \dfrac{r^2}{kq}\\=\dfrac{mv^2r}{kq}\\=\dfrac{(0.959\times 10^{-3})\times (47.9)^2\times (0.207)}{(9\times 10^9)\times (5.84\times 10^{-6})}\\=8.66\times 10^{-6}\ C\\=8.66\ \mu C.

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