Calculate the hoop stress at rupture if the burst (maximum internal) pressure is 136.4 mpa. the pv has a nominal thickness of 4 mm.

Explanation:

Given data:

Internal pressure = 136.4 MPa

thickness is given as 4 mm

diameter is not given in the question hence we are assuming the diameter of given cylinder to be 100 mm

circumferential stress is given as

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle