As an EMS provider, you are called to care for a patient that has been contaminated with a cleaning chemical at a chemical warehouse. The fire department Haz-Mat team has been in command of this incident. As you approach, the patient gets up from where he is being decontaminated and runs to your open ambulance. What is the biggest concern with this patient’s action? The patient has:

The distance to a reflector in soft tissue is 15 cm. What is the go return time to this depth?

The solid circular steel shaft of a screwdriver is subjected to torque T. The shaft has a diameter of 0.512 in. and a length of L = 3.75 in. For a factor of safety of 1.7 and a shearing yield strength of 19 ksi, determine the maximum torque T that can be applied to the shaft.

A dump truck axle with a diameter of 1.787 in. and a length of 37.5 in. failed when the shear stress reached 85 ksi on the outer surface. The shear modulus of the steel is G = 11,900 ksi. Assuming the shaft did not yield prior to failure, determine the angle of twist of the axle when it failed.

A gear train is composed of four gears, where gears A and B are on the same shaft. Gear A has 60 teeth, gear B has 36 teeth, gear C has 48 teeth, and gear D has 12 teeth. If a torque of 0.961 N·m is applied to gear D, determine the torque at gear A.

A torque of 26 lb·in. is applied to one end of a 7-in.-long composite shaft that consists of two polymer tubes. The outer tube has a polar moment of inertia of 0.037 in.4 and a shear modulus of 170 ksi. The inner tube has a polar moment of inertia of 0.00779 in.4 and a shear modulus of 180 ksi. Determine the magnitude of the torque produced in the inner tube.

A dump truck axle with a diameter of 1.675 in. and a length of 37.3 in. failed when the shear stress reached 89 ksi on the outer surface. The shear modulus of the steel is G = 11,100 ksi. Assuming the shaft did not yield prior to failure, determine the angle of twist of the axle when it failed.

A dump truck axle with a diameter of 1.621 in. and a length of 38.0 in. failed when the shear stress reached 80 ksi on the outer surface. The shear modulus of the steel is G = 11,300 ksi. Assuming the shaft did not yield prior to failure, determine the angle of twist of the axle when it failed.

A dump truck axle with a diameter of 1.690 in. and a length of 37.9 in. failed when the shear stress reached 73 ksi on the outer surface. The shear modulus of the steel is G = 11,700 ksi. Assuming the shaft did not yield prior to failure, determine the angle of twist of the axle when it failed.

A load of P = 14 N is applied to a hex wrench that has lengths a = 29 mm and b = 87 mm. Determine the torque applied to the set screw.