Provide clear explanation so i can understand how you solved it.

3. The graph shows the potential-energy curve Energy (J) of a particle moving along the x-axis under the influence of a conservative force. PE a. In which intervals of x is the force on the particle to the right? 10 x (m) b. In which intervals of x is the force on the particle to the left? c. At what values or values of x is the magnitude of the force a maximum? PHYS 211 RECITATION 4. Give a specific example of a situation in which: (make sure to indicate what the system is). a. Wext - K with AU = 0 and 4Eth = 0 b. Wext - U with AK = 0 and 4Eth = 0 C. Wext - Eth with AK = 0 and AU = 0 d. U - Eth with 4K = 0 and Wext = 0