Answer:
The last one
1m = 100 cm
Explanation:
If you do not trust me look it up
Answer :
,
and 
Explanation :
Given that,
Charge of the object q = 
Electric field in x-direction 
Electric field in y- direction 
Electric field in z - direction 
Now, using formula

Now, the force on the object in x- direction


The force on the object in y- direction


The force on the object in z- direction


Hence, this is the required solution.
From my new perspective, the new intensity of the
light source has decreased by a factor of four.
<h3>
Answer:</h3>

<h3>
General Formulas and Concepts:</h3>
<u>Math</u>
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Physics</u>
<u>Energy</u>
Elastic Potential Energy: 
- U is energy (in J)
- k is spring constant (in N/m)
- Δx is displacement from equilibrium (in m)
<h3>
Explanation:</h3>
<u>Step 1: Define</u>
k = 7.50 N/m
Δx = 0.40 m
<u>Step 2: Find Potential Energy</u>
- Substitute in variables [Elastic Potential Energy]:

- Evaluate exponents:

- Multiply:

- Multiply:
