A large uniform cylindrical steel rod of density ρ= 7,8 g/cm3 is 2.0 m long and has a diameter of 5,0 cm. The rod is fastened to a concrete floor with its long axis vertical. What is the normal stress in the rod at the cross- section located at (a) 1,0 m from its lower end? (b) 1,5 m from the lower end? 1) σ1=78 kPa, σ=117 kPa;
2) σ1=39 kPa, σ2=78 kPa;
3) σ1=78 kPa, σ2=39 kPa;
4) σ1=39 kPa, σ2=117 kPa.

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix.b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer.d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.

You can estimate the degree to which a bond between two atoms is ionic or covalent by calculating the

Cho is making a bar graph showing the amount of money spent on health care between 1999 and 2005. the dependent variable is the: a: money spent b: year c: number of patients