a.
Define the normal body temperature, and explain in briefly.
a.
Explanation of Solution
Discussion:
The value of normal temperature of a human body can varies from
The normal temperature of human body also changes due the muscle metabolism while doing daily exercises.
The normal temperature of a human body can varies from
b.
State the temperature range that referred as fever and explain in briefly..
b.
Explanation of Solution
The normal temperature of a human body can varies from
Using the knowledge of the temperature ranges of human body it easy to identify the illness and health condition and also it is easy to provide proper medication for the affected person.
c.
State the normal surface temperature of a human body and explain briefly.
c.
Explanation of Solution
The normal surface temperature (skin temperature ) of a human body is exists between
Generally, in humans pregnant ladies have the high surface temperature due increased blood pressure. Children’s skin temperature is a bit higher than the adults.
d.
State the comfortable room temperature, and explain significance in terms of human thermal comfort. Explain the role of humidity.
d.
Explanation of Solution
According to the standards of the WHO (worlds health organization) the normal comfortable room temperature is
Generally for healthy adults comfortable room temperature is
The water vapor percentage in the air is known as humidity or humidity factor. It is the environmental factor that affects the human thermal comfort
For example, the comfortable room temperature for human body is 40 to 50% of relative humidity and
Humidity increases the body temperature because of overheat, and increases the moisture in the air. Humidity might cause for the dangerous health issues.
If a person doing some exercise, that person can feel more comfortable in a room that has lower than
e.
Investigate the value of operating temperature range of the freezer in a household temperature.
e.
Explanation of Solution
The household refrigerator temperature is about or below the
The frozen food is that which requires keep storing in cool place under frozen temperatures from its prepared time to eaten.
Thus, the temperature of the freezer of a household refrigerator is
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Chapter 11 Solutions
Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)
- Sketch the effective stress profile for the silt layer to a depth of 5 meters for a uniform layer of silt having a depth to the water table of 4 m (choose several discrete points with depth and plot by hand). Use Bishop's definition of effective stress for the silt layer, assuming x =S.. Assume a value of G. = 2.65 and that the gravimetric water content of the silt below the water table is 20%. Use the SWRC for the silt from the figure below. Assume that the air pressure is equal to atmospheric pressure (i.e., zero). Consider variations in total unit weight with the degree of saturation in your calculations. 100000 a. 10000 Sand: a = 0.3 kPa, n = 3.0 Silt: a=0.05 kPa, n=2.5 0.01 kPa, n = 1.8 1000 Clay: Matric suction (kPa) 00 100 10 10 1 0.1 ° 20 60 80 40 Saturation (%) 100 10arrow_forwardYou are asked to design a two-story commercial building that has reinforced masonry shear walls as shown below. The height of the parapet above the roof is 2 feet. The walls are to be constructed of 8-inch CMU and are to be fully grouted. The building is assigned to SDC D, and therefore, the walls have to be special RM shear walls according to TMS 402. There are 6 shear walls to resist the lateral seismic force along one principal axis of the building and 4 shear walls along the other axis. The corner walls are flanged walls meeting the requirements in Sec. 5.2.3 of TMS 402-22. The columns carry only gravity loads and no lateral seismic forces. The floor and roof diaphragms are relatively flexible in out-of-plane bending compared to the in-plane flexural stiffness of the walls, so that you can ignore the coupling moments and shear forces exerted by the diaphragms on the walls. However, the in-plane stiffness of the diagrams is high so that their planar deformation can be ignored.…arrow_forwardDevelop a signal design and timing for the intersection shown in the figure below. In each case accommodate both vehicular and pedestrian movements. In general, use the following values for the problem: pedestrian walking speed = 1 [m/s], vehicle deceleration = 3 [m/s²], driver reaction time = 1.5 [s], length of vehicle 6 [m], and level grade = 0. If you need to assume = other variables and parameters to solve this problem clearly state that in your report and explain the reason. 250 1100 One-way Speed limit = 50 [km/h] Pedestrian = 15 per each crosswalk Crosswalk widths = 3 [m] Lane width = 4 [m] Saturation flow = 1800 [veh/h/lane] 1100 70 80 T 200 900arrow_forward
- A pre-timed four-phase signal has critical lane group flow rates for the first three phases of 260, 280, and 310 [veh/h] (saturation flow rates are 2000 [veh/h/In] for all phases). The lost time is known to be 5 seconds for each phase. If the cycle length is 90 seconds, what is the estimated effective green time of the fourth phase?arrow_forwarda. Assume a bus line with N stops, where the distance between stops is S. Free flow speed of the bus is v, with acceleration and deceleration, a. P passengers per stop are boarding and alighting, and the time needed for a passenger to board or alight is T seconds. What is the average speed of a bus? b. Following on part (a), assume the origins of passengers are spread uniformly along the bus route. The destination of all passengers is the last stop. The walking speed of passengers is u. Determine the average travel time (walking + in-vehicle) of passengers. c. Simplify the above equation when N is large enough (approximating N-1/2 by N-1). Consider now that you can decide on S, where you replace N=L/S (L is the length of the route). Find the value of S that minimises the travelling time of the passengers. d. In the same setting as (c), assume that some passengers do not go to the terminal but alight before. Explain if your answer from (c) would increase or decrease and why. If you need…arrow_forwardThe minimum cycle length for an intersection is determined to be 95 seconds. The critical lane group flow ratios were calculated as 0.235, 0.25, 0.17, and 0.125, respectively. Assuming 5 seconds lost per phase, determine which X was used.arrow_forward
- A four-phase traffic signal has critical lane group flow ratios of 0.250, 0.150, 0.225 and 0.125. If the lost time per phase is 4 seconds and a critical intersection v/c of 0.85 is desired, calculate the minimum cycle length and the phase effective green times such that the lane group v/c ratios are equalized.arrow_forwardA pre-timed four-phase signal has critical lane group flow rates for the first three phases of 260, 280, and 310 [veh/h] (saturation flow rates are 2000 [veh/h/ln] for all phases). The lost time is known to be 5 seconds for each phase. If the cycle length is 90 seconds, what is the estimated effective green time of the fourth phase?arrow_forwardPLEASE SOLVE THE QUESTIONS IN THE PICTURE, make sure you show all of your work please. Thank you for your help!arrow_forward
- Please solve the following question in the picture, make sure you show all of your work and formulas you use. Thank you so much for your help!arrow_forwardDetermine all the quantities mentioned. Show complete solution using Mohr's Circle only.arrow_forwardAnswer the following questions please.arrow_forward
Engineering Fundamentals: An Introduction to Engi...Civil EngineeringISBN:9781305084766Author:Saeed MoaveniPublisher:Cengage Learning