For the next few questions, let e denote the frame of reference of the earth, a the "air" frame of reference, and p an airplane. take the eastward direction to be positive. if the wind around the plane is blowing due west at 45 mph and the airplane is flying due east with an airspeed of 300 mph, what is the value of vea? (using the convention for subscripts introduced in your textbook.)

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?

22. the effect of threshold braking is to a cause skids. b. lock wheels. c. prevent locking of wheels. d. increase stopping distance.

If a simple machine reduces the strength of a force, what must be increased?