The wind changes direction at approximately 9:10 am and 12:10 am. What is the truth about each of these time

In an experiment, how can i change human errors? be specific.

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination.at the turning point, how far is the second student from the destination?

Which of the following statements correctly describes a transformer?