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An air refrigerator works between pressure limits of 1 bar and 4 bar. The temperature of the air entering the compressor is 15 °C and entering the expansion cylinder is 30 °C. The expansion follows the law PV^1.25= constant. The compression follows the law PV^1.35 = constant. Take for air, Cp = 1 kJ/kg k and Cv = 0.7 kJ/kg k. Find the following
a. COP of the refrigeration cycle
b. If the air circulation through the system is 25 kg/min, find the refrigeration capacity of the system
Share your thoughts about the importance of being able to explain and predict health-related behaviors. To what extent do models of belief and behavior help to explain actual behavior? Utilize the readings to support your ideas.
End your discussion post with one well-thought-out question related to health psychology from which your colleagues can formulate a response or generate further discussion.
Your Discussion should be at least 250 words in length, but not more than 750 words. Use APA citations and references for the textbook and any other sources used.
A proton moving horizontally at 3.5×10⁴ m/s enters a uniform magnetic field of 0.075 T directed upward at 30° with the horizontal. Find the magnitude of the magnetic force acting on the proton
Analyze a health-related behavior that is considered unhealthy (smoking, unhealthy eating, drinking too much, not getting enough sleep, not exercising, avoiding health screenings, etc.). Based on your readings, describe and analyze how health beliefs are related to this behavior using at least one of the models in the textbook. Examples: Stages of Change Model, Health Belief Model (HBM) or Protection Motivation Theory (PMT), Theory of Planned Behavior (TPB). Analyze and discuss the psychosocial (emotional, social, financial) influences on health-related behavior that you observe.
At cryptobank a $100,000 loan for one year has a quoted interest rate of 10.50% payable annually but with a compensating balance of 20%. At Mo bank a $100,000 discount loan has a quoted interest rate of 7.90%payable annually. The loan at Mo bank is _____ per year cheaper than at cryptobank
8.) The energy required to punch a square from 30mm thick plate is 20KJ. If the ultimate strength of plate is 450Mpa, determine the maximum sides of square that can be punch. (Please show the solution of answer)
Answer: S=24.69mm
6.) The power required to shear a plate 60mm thick for 20sec is 8KW. If the ultimate strength of plate materials is 4oo Mpa, How wide should the plate be? (Please show the solution of answer)
Answer: b= 222.22mm
5.) A plate 400mm wide and 0.03 mm thick with strength of 400Mpa is to shear. During shearing process a 1000mm mean diameter flywheel changes its speed from 220 to 200 rpm. Determine the weight of flywheel to be used. (Please show the solution of answer)
Answer: W=61.34KN
3. During a punching process of 350 kg flywheel the speed varies 250 to 220 rpm with 1.2m mean diameter. Determine the kinetic energy needed. (Please show the solution of answer)
Answer: 9.74 kN-m
2. Compute the maximum deflection of a 15 coils helical spring having a load of 80 kgs. The spring is a square and ground ends w/ modulus of elasticity in shear of 80 GPa, outside diameter of 100mm, wire diameter of 10mm. (Please show the solution of answer)
Answer: a. 74.375mm
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#339914 on Dec 2023