I believe your answer is d).
Hope you find this helpful! :)
Answer:
Electric force, F = 20.16 N
Explanation:
It is given that,
Charge on gold nucleus, ![q_1=79e=79\times 1.6\times 10^{-19}=1.26\times 10^{-17}\ C](https://tex.z-dn.net/?f=q_1%3D79e%3D79%5Ctimes%201.6%5Ctimes%2010%5E%7B-19%7D%3D1.26%5Ctimes%2010%5E%7B-17%7D%5C%20C)
An electron is sent at high speed toward a gold nucleus, ![q_2=1.6\times 10^{-19}\ C](https://tex.z-dn.net/?f=q_2%3D1.6%5Ctimes%2010%5E%7B-19%7D%5C%20C)
Distance between electron and gold nucleus, ![d=3\times 10^{-14}\ C](https://tex.z-dn.net/?f=d%3D3%5Ctimes%2010%5E%7B-14%7D%5C%20C)
We need to find the electric force acting on the electron. The formula for electrostatic force is given by :
![F=\dfrac{kq_1q_2}{d^2}](https://tex.z-dn.net/?f=F%3D%5Cdfrac%7Bkq_1q_2%7D%7Bd%5E2%7D)
![F=\dfrac{9\times 10^9\times 1.26\times 10^{-17}\times 1.6\times 10^{-19}}{(3\times 10^{-14})^2}](https://tex.z-dn.net/?f=F%3D%5Cdfrac%7B9%5Ctimes%2010%5E9%5Ctimes%201.26%5Ctimes%2010%5E%7B-17%7D%5Ctimes%201.6%5Ctimes%2010%5E%7B-19%7D%7D%7B%283%5Ctimes%2010%5E%7B-14%7D%29%5E2%7D)
F = 20.16 N
The electric force acting on the electron is 20.16 N. Hence, this is the required solution.
Answer:
t=0 is t
t=8= 8t
Explanation:
because 0 is means "nothing" so that's why t=0 is t
Momentum = (mass) x (speed)
Momentum = (12,000 kg) x (40 m/s)
Momentum = (12,000 x 40) kg-m/s
<em>Momentum = 480,000 kg-m/s </em>
We do not feel the gravitational forces from objects other than the Earth because they are weak.