Which statement best defines work? a. work is the time it takes to move an object once acted upon by a force. b. work occurs when balanced forces act on an object and cause movement in the direction of these forces. c. work occurs when a force causes motion of an object, and this motion is in the same direction of the applied force. d. work is the distance over time that an object moves once acted on by a force.

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?

Natural forces that can alter ecosystems include seasons and climate changes. t or f

Select the word from the list that best fits the definition classification of most stars on the h-r diagram