Answer:
Explanation:
The fundamental charge of a single electron is
.
If there are 10 excess electrons, the net charge that would be measured should be 10 times the fundamental charge of a single electron:
![Q=nq_e\\Q= 10\times 1.6\times 10^{-19} C\\Q= 1.6 \times 10^{-18} C](https://tex.z-dn.net/?f=Q%3Dnq_e%5C%5CQ%3D%2010%5Ctimes%201.6%5Ctimes%2010%5E%7B-19%7D%20C%5C%5CQ%3D%201.6%20%5Ctimes%2010%5E%7B-18%7D%20C)
Option 2 is your answer :)
Answer:
Velocity is 2.17 m/s at an angle of 9.03° above X-axis.
Explanation:
Mass of object 1 , m₁ = 300 g = 0.3 kg
Mass of object 2 , m₂ = 400 g = 0.4 kg
Initial velocity of object 1 , v₁ = 5.00i-3.20j m/s
Initial velocity of object 2 , v₂ = 3.00j m/s
Mass of composite = 0.7 kg
We need to find final velocity of composite.
Here momentum is conserved.
Initial momentum = Final momentum
Initial momentum = 0.3 x (5.00i-3.20j) + 0.4 x 3.00j = 1.5 i + 0.24 j kgm/s
Final momentum = 0.7 x v = 0.7v kgm/s
Comparing
1.5 i + 0.24 j = 0.7v
v = 2.14 i + 0.34 j
Magnitude of velocity
![v=\sqrt{2.14^2+0.34^2}=2.17m/s](https://tex.z-dn.net/?f=v%3D%5Csqrt%7B2.14%5E2%2B0.34%5E2%7D%3D2.17m%2Fs)
Direction,
![\theta =tan^{-1}\left ( \frac{0.34}{2.14}\right )=9.03^0](https://tex.z-dn.net/?f=%5Ctheta%20%3Dtan%5E%7B-1%7D%5Cleft%20%28%20%5Cfrac%7B0.34%7D%7B2.14%7D%5Cright%20%29%3D9.03%5E0)
Velocity is 2.17 m/s at an angle of 9.03° above X-axis.
Answer:
microscopic means that they are very very tiny, you cannot see them with the human eye, you have to use a tool like a microscope
Explanation: