Aplanet revolves around the sun in an elliptical orbit o eccentricity e. if t is the time period of the planet, then the time spent by the planet between the ends of the mino axis close to the sun is:

Which of the following is an example of how telecommunication devices people do their jobs? a.) a security guard checks the time using a digital watch. b.) a banker does some quick math using a solar calculator. c.) a nurse uses a digital thermometer to take a patient’s temperature. d.) a construction worker reports in to his office using a cell phone.