The Viking spacecraft searched for life on Mars by looking for the effects of life on the upper atmosphere
a. True
b. False
Indicate whether the statement is true or false
False
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Estimate the maximum cooling rate for a jominy bar at a jominy distance of 15 cm and when does it occur?
FIG 3-23
Jominy end-quench test
A long steel beam with rectangular cross section of 40 cm by 60 cm is mounted on an insulating wall as shown in the following sketch. The rod is heated by radiant heaters that maintain the top and bottom surfaces at 300°C. A stream of air at 130°C cools the exposed face through a heat transfer coefficient of 20 W/(m2K). Using a node spacing of 1 cm, determine the temperature distribution in the rod and the rate of heat input to the rod. The thermal conductivity of the steel is 40 W/(m K).
GIVEN
Rectangular steel beam mounted on an insulating surface, heated top and bottom, with exposed face cooled by an air flow
FIND
(a) Temperature distribution in the rod (b) Rate of heat input to the rod
SKETCH
Which of the following performance domains includes the athletic trainer's responsibility to educate others?
A. Professional Responsibilities B. Prevention of Athletic Injuries C. Immediate Care of Athletic Injuries D. Clinical Evaluation and Diagnosis
Calculate the percentage composition by mass (to the nearest 0.1) of each element in sodium sulfide, Na2S