Challenge test case output this is a practice programming challenge. use this screen to explore the programming interface and try the simple challenge below. nothing you do on this page will be recorded. when you are ready to proceed to your first scored challenge, click "finish practicing" above. programming challenge description: write a program that squares an integer and prints the result.

Two students are discussing electricity that has a frequency of 60 hz. student a says that this type of electricity is referred to as ac. student b says that in this type of electricity, the electrons flow in only one direction. which of the following statements is correct? a. only student a is correct b. only student b is correct c. both of the two students are correct d. neither of the two students is correct