I believe the last one about the bike is correct.
Answer: The field lines bend away from the second positive charge
Explanation: opposite attracts, same repulse
The potential energy of the spring is 6.75 J
The elastic potential energy stored in the spring is given by the equation:

where;
k is the spring constant
x is the compression/stretching of the string
In this problem, we have the spring as follows:
k = 150 N/m is the spring constant
x = 0.3 m is the compression
Substituting in the equation, we get


Therefore. the elastic potential energy stored in the spring is 6.75J .
Learn more about potential energy here:
brainly.com/question/10770261
#SPJ4
C because it’s not a or B so 50/50 c or d and d is def not the answer so c