A family goes on a road trip that is 500 km long. It takes the family 2 hours and 30 minutes to complete the trip. What was the family’s speed? A) 2.17 km/h
B) 200 km/h
C) 1.33 km/h
D) 250 km/h

What is the scientific definition of energy that relates to work

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?

Uppose we consider the system of the three capacitors as a single "equivalent" capacitor. given the charges of the three individual capacitors calculated in the previous part, find the total charge qtot for this equivalent capacitor. express your answer in terms of v and c.