Distance is 50 km
Displacement is 10 km
<u>Explanation:</u>
Given:
Distance toward south, x = 25 km
Distance towards west, y = 10 km
Distance towards north, z = 15 km
(a) Total distance, D = ?
Total distance, D = x + y + z
D = 25 + 10 + 15
D = 50km
(b) Displacement, d = ?
Displacement = final position - initial position
= 10 - 0 km
= 10km
Answer:
WHat do you mean by that
Explanation:
I dont get what you re asking
Explanation:
(1). Formula to calculate the potential difference is as follows.
= ![-\int \frac{kq}{r^{2}} dr](https://tex.z-dn.net/?f=-%5Cint%20%5Cfrac%7Bkq%7D%7Br%5E%7B2%7D%7D%20dr)
= ![\frac{kq}{r_{f}} - \frac{kq}{r_{i}}](https://tex.z-dn.net/?f=%5Cfrac%7Bkq%7D%7Br_%7Bf%7D%7D%20-%20%5Cfrac%7Bkq%7D%7Br_%7Bi%7D%7D)
= ![\frac{kq(r_{f} - r_{i})}{r_{f}r_{i}}](https://tex.z-dn.net/?f=%5Cfrac%7Bkq%28r_%7Bf%7D%20-%20r_%7Bi%7D%29%7D%7Br_%7Bf%7Dr_%7Bi%7D%7D)
= ![\frac{9 \times 10^{9} \times 3.30 \times 10^{-9}(0.1 - 0.015)}{0.1 \times 0.015}](https://tex.z-dn.net/?f=%5Cfrac%7B9%20%5Ctimes%2010%5E%7B9%7D%20%5Ctimes%203.30%20%5Ctimes%2010%5E%7B-9%7D%280.1%20-%200.015%29%7D%7B0.1%20%5Ctimes%200.015%7D)
= 38.7 volts
Therefore, magnitude of the potential difference between the two spheres is 38.7 volts.
(2). Now, formula to calculate the energy stored in the capacitor is as follows.
E = ![\frac{1}{2}QV](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7DQV)
= ![\frac{1}{2} \times 3.30 \times 10^{-9} \times 3.87 V](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D%20%5Ctimes%203.30%20%5Ctimes%2010%5E%7B-9%7D%20%5Ctimes%203.87%20V)
= ![6.39 \times 10^{-8} J](https://tex.z-dn.net/?f=6.39%20%5Ctimes%2010%5E%7B-8%7D%20J)
Thus, the electric-field energy stored in the capacitor is
.
Answer:r=5.824 mm
Explanation:
Given
Charge ![q_1=70 nC](https://tex.z-dn.net/?f=q_1%3D70%20nC)
![q_2=70 nC](https://tex.z-dn.net/?f=q_2%3D70%20nC)
Force between them ![F=1.30 N](https://tex.z-dn.net/?f=F%3D1.30%20N)
Electrostatic Force is given by
![F=\frac{kq_1q_2}{r^2}](https://tex.z-dn.net/?f=F%3D%5Cfrac%7Bkq_1q_2%7D%7Br%5E2%7D)
where
and
are the charge on the Particles
r=distance between them
![k=Coulomb\ constant =9\times 10^9 N-m^2/C^2](https://tex.z-dn.net/?f=k%3DCoulomb%5C%20constant%20%3D9%5Ctimes%2010%5E9%20N-m%5E2%2FC%5E2)
![1.3=\frac{9\times 10^9\times 70\times 70\times 10^{-18}}{r^2}](https://tex.z-dn.net/?f=1.3%3D%5Cfrac%7B9%5Ctimes%2010%5E9%5Ctimes%2070%5Ctimes%2070%5Ctimes%2010%5E%7B-18%7D%7D%7Br%5E2%7D)
![r^2=\frac{9\times 10^9\times 70\times 70\times 10^{-18}}{1.3}](https://tex.z-dn.net/?f=r%5E2%3D%5Cfrac%7B9%5Ctimes%2010%5E9%5Ctimes%2070%5Ctimes%2070%5Ctimes%2010%5E%7B-18%7D%7D%7B1.3%7D)
![r=\sqrt{33.923\times 10^{-6}}](https://tex.z-dn.net/?f=r%3D%5Csqrt%7B33.923%5Ctimes%2010%5E%7B-6%7D%7D)
![r=5.824\times 10^{-3}](https://tex.z-dn.net/?f=r%3D5.824%5Ctimes%2010%5E%7B-3%7D)
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