What technique allows an investigation of the microheterogeneity of a membrane so that one can see localized differences in different parts of the membrane?

Freeze Fracture replication

Explanation:

Freeze Fracture replication is a technique that allows investigation of the microheterogeneity of a membrane so that one can see localized differences in different parts of the membrane.

Freeze fracture replication is a technique used with electron microscopy to splits frozen cell membranes apart for visualization of the membrane structure and the organization of proteins within the sea of phospholipids.

The four steps in making a freeze-fracture replication are

(i) rapid freezing,

(ii) fracturing,

(iii) replication and

(iv) replica cleaning.

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft