Yes. Petroleum, or crude oil, is a fossil fuel and is used to create items such as bubble gum, plastic, etc.
<span>S= 1/2(V f + V I )t solve for V f
2s/t=Vf+Vi
</span><span>2s/t-Vi=Vf</span>
Answer:
The electric potential is 
Explanation:
From the question we are told that
The length of the rod is 
The total charge of the rod is 
The length from the center is 
The diagram illustrating the setup for this question is shown on the first uploaded image
From the diagram the potential at point A 
is mathematically represented as
Where K is the coulomb constant with a value 
where q is the charge in charge the rod relative to its distance from A is mathematically represented as
This a small unit length of the rod
So 
=> ![V = k\frac{q}{L} ln [\frac{4}{2} ]](https://tex.z-dn.net/?f=V%20%3D%20%20k%5Cfrac%7Bq%7D%7BL%7D%20%20ln%20%5B%5Cfrac%7B4%7D%7B2%7D%20%5D)
Substituting values
The elastic potential energy stored in the stretched spring is 1 J.
<h3>What is Hooke's law?</h3>
Hooke's law states that; provided the elastic limit is not exceeded, the extension of the spring is directly proportional to the force on the spring.
Given that;
Force on the spring = 350 Newton
Distance stretched = 7 centimeters or 0.07 m
Hence;
F = ke
k = F/e = 350 Newton/0.07 m = 5000 N/m
Work done in stretching a spring = 1/2ke^2
= 0.5 × 5000 × (2 × 10^-2)^2 =1 J
Learn more about elastic potential energy: brainly.com/question/156316
The magnetic force on a charged particle is given as: F = qvBsinФ
B is the magnetic field.
q is the charge on the particle.
v is the velocity of the charged particle.
Ф is the angle between magnetic field (B) & the velocity of charge (v).
⇒ F = qvb sin Ф
Here, Ф = 90 degree.
and sin 90 = 1
Putting the values in the equation, we get,
F = 1.6 x 10^-19 C × 4.5 × 10^7 m/s × 1.6 T
= 11.52 × 10^-12N
= 1.2 x 10^-11 N up
