A piece of pipe has an outer radius of 4.5 cm,
an inner radius of 2.5 cm, and length of 39 cm
as shown in the figure.
39 cm
4.5 cm
K
2.5 cm
What is the mass of this pipe? Assume its
density is 8.7 g/cm3
Answer in units of kg.

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant

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.

Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg