A11.8-m-long steel [e = 206 gpa] pipe column has an outside diameter of 202 mm and a wall thickness of 5 mm. the column is supported only at its ends and it may buckle in any direction. calculate the critical load pcr for the following end conditions:

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples