Due to the operational conditions and temperature gradient, a 60 mm diameter, 2.75 m long steel rod within a machine assembly is subjected to a combination of tensile loading of 280 n and thermal loading which imposes a longitudinal force of 310 n. the total loading results in an even distribution of forces on the body of the rod causing it to change its dimensions by increasing 0.78 mm in length at both ends and decreasing by 0.0137 mm at the diameter. determine the following: a) total normal stress which the rod is subjected to. b) total axial strain which the rod is subjected to. c) total lateral strain which the rod is subjected to. d) what is the total length of the rod due to the effects of the combined loading? e) what is the new diameter of the rod due to the effects of the combined loading? 1) what was the percentage total elongation of the rod? g) what was the percentage total reduction in the cross-sectional area of the rod? poisson's ratio, v. may be determined by dividing the negative value of the lateral strain by the axial strain. what is poisson's ratio for the rod material? b) the shear modulus, g. of a material may be determined by the following equation: g er 201 + v), where e is the modulus of elasticity, and v. is poisson's ratio. if the modulus of elasticity for the rod material is e - 258 gpa, what is the value of the shear modulus?

d. air pressure decreases as altitude increases.

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y

the design of a ski jumping suit involves a trade-off between giving the skiers lift to get higher jumps and ensuring the skier does not face a lot of drag before the jump itself. an expansive suit may to lift the skier higher, but at the same time, it will also increase the air resistance. higher air resistance as the skier goes down the slope limits the speed of the jump. a big suit also increases the risk of losing balance or control, especially if there's a strong gust of wind. while technologically enhanced suits a lot, clothing is not the only factor in a ski jumper’s success. gathering speed while skiing down the slope, ensuring good speed on the ramp, and maintaining good body posture and form in the air all contribute to a ski jumper's success.