Set up the simulator for Champaign, IL which has a latitude of 40° N. Complete the chart for the the rising and setting azimuths and cardinal directions for the Sun's daily path on the summer solstice (June 21), winter solstice (Dec 21), and the equinoxes

We all use gps today, even if we don't drive yet. i bet you have been in the car with a parent and they have asked you to get out your phone to find a specific location. in your car, on the phone, you are using a very sophisticated technology. gps satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. gps receivers take this information and use trilateration to calculate the user's exact location. essentially, the gps receiver compares the time a signal was transmitted by a satellite with the time it was received. the time difference tells the gps receiver how far away the satellite is. now, with distance measurements from a few more satellites, the receiver can determine the user's position and display it on the unit's electronic map. what type of signal is utilized by the gps satellite?

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?

What is the role of lenses in microscopy?