Final answer:
To find the tangential speed of the satellite, first calculate the orbit's circumference using the orbital radius, then convert the period from days to seconds and use the formula v = C/t.
Step-by-step explanation:
To calculate the tangential speed of the satellite, Enrique should first determine the circumference of the satellite's orbit using the provided orbital radius (r). The formula for circumference (C) is C = 2πr. With the radius r = 3.8 × 108 m, he can plug this value into the formula. After finding the circumference, he should convert the period t from days to seconds to use consistent units. Since the satellite completes one orbit in t = 18 days, Enrique can calculate the tangential speed (v) by dividing the circumference by the period (expressed in seconds), using the formula v = C/t. Remember that there are 86400 seconds in a day.