Thinking Like an Engineer: An Active Learning Approach (4th Edition)
4th Edition
ISBN: 9780134639673
Author: Elizabeth A. Stephan, David R. Bowman, William J. Park, Benjamin L. Sill, Matthew W. Ohland
Publisher: PEARSON
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Chapter 3, Problem 19MDP
To determine
Find the value of pi experimentally.
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This FBD is considered to solve the problem.
0.45 m 0.45m
P
0.75 m
1.35 m
1.05 m
N
ii) Choose the assumption made for using this FBD.
O a. The crate is in equilibrium.
O b. The crate is slipping.
O c. The crate is tipping.
O d. The crate is moving.
show all steps. answer is either partial or given.
Question 1
Consider that you have conducted an experiment of “Tensile Test" for zinc, in which the result was
collected as shown in Figure 1. Discuss the experimental result.
4000
3600
2200
2800
2400
MAK
2000 R
1600
Break
1200
MAX_D
B00
400
10
12
Dap (mm)
14
Figure 1
Chapter 3 Solutions
Thinking Like an Engineer: An Active Learning Approach (4th Edition)
Ch. 3.3 - We often express criteria in terms that are not...Ch. 3 - Which of the following statements about design is...Ch. 3 - Which of the following statements about design is...Ch. 3 - Which of the following do NOT describe a possible...Ch. 3 - Prob. 4RQCh. 3 - What is the best way to choose a final design? A....Ch. 3 - Which of the following definitions for...Ch. 3 - Which of the following is NOT a good way to build...Ch. 3 - Which of the following describes random error? A....Ch. 3 - What should be the first consideration when...
Ch. 3 - 1. Prove the law of the lever.Ch. 3 - Demonstrate conservation of energy (potential...Ch. 3 - Determine the coefficient of static and sliding...Ch. 3 - 4. Prove that the angle of incidence is equal to...Ch. 3 - Prob. 5MDPCh. 3 - Prob. 6MDPCh. 3 - Prob. 8MDPCh. 3 - Find the center of gravity of an irregular piece...Ch. 3 - 10. Show that for circular motion, force = mass ...Ch. 3 - Prob. 11MDPCh. 3 - Measure the effective porosity of a sand sample.Ch. 3 - Prob. 13MDPCh. 3 - 14. Prove Hookes law for a spring.Ch. 3 - Prob. 15MDPCh. 3 - Prob. 16MDPCh. 3 - Prob. 18MDPCh. 3 - Prob. 19MDPCh. 3 - 21. Relate the magnetic strength to the radius.Ch. 3 - Determine the density and specific gravity of a...Ch. 3 - Determine the thickness of a specified coin or a...Ch. 3 - Prob. 26MDPCh. 3 - What is the volumetric flow rate from your shower?
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- answer qiucklyarrow_forwardQuestion 8 Which of the following is NOT a unit of pressure? Pa bar N/m2 N Moving to another question will save this response.arrow_forwardAn electric hot water heater consumes 3.1 kilowatts of electricity and converts it to heat. How long will it take the water heater to heat a 67 gallon tank of water from 10 degrees Celsius to 50 degrees Celsius? (1 kilogram of water is 0.37 gallons, 1 Calorie = 4200 J). It may be helpful to refer back to the weekly handout for guidance on this problem. Your final answer should be in minutes (rounded to the nearest 10 minutes).arrow_forward
- Kindly answer correctly. PPlease show the necessary stepsarrow_forward16. There are 4 materials that were exposed to different forces and their corresponding elongation is given. Which will have the greatest and lowest value of k. Material A was exposed to 100 N force and elongation is 0.02 meters. B was exposed to 200 N force and elongation is 0.05 meters. C was exposed to a force of 300 N and elongation is 0.07 meter, D was exposed to 400N force and elongation is 0.09 meter.arrow_forwardPlease answer correctly ASAP. Please put your answer on the paper. Thank you Note: tolereance is ± 1 in the 3rd significant digitarrow_forward
- Mechanical Engineering The fatigue strength limit Sn (n = 106) of a steel part is 112 MPa and its ultimate tensile strength (Sy) is 385MPa. Adopting Ct = 1, and S103 = 0.9 * Su* Ct, determine: (Use two decimal places in the answers), (* is multiplication signal): a) The fatigue strength (in MPa) corresponding to a life of 40000 cycles. b) The average life in cycles that this part would last if subjected to an alternating stress of 170 MPa due to bending.arrow_forwardThe amount of heat required to change the temperature of a material from T1 to T2 isgiven by Q= mCp(T2-T1). Using this equation, answer the following:a. How many BTU’s of heat are required to cook a beef roast weighing 10 lb from 40 to 130oF?, Cp = 0.8 BTU/lboFb. Convert the number of BTU’s of heat in watt hours.c. If this roast is heated in a microwave oven having an output of 200 watts, how long will it take to cook the roast?arrow_forward30. In a typical tension test a dog-bone shaped specimen is pulled in a machine. During the test, the force F needed to pull the specimen and the length L of a gauge section are measured. This data is used for plotting a stress-strain diagram of the material. Two definitions, engineering and true, exist for stress and strain. The engineering stress F de and strain e are defined by oe F %3D and A0 L-Lo where Lo and Ao are the initial gauge 6, = Lo length and the initial cross-sectional area of the specimen, respectively. The true stress o, and strain e are defined by o, 는는 and q %3D = In A0 Lo The following are measurements of force and gauge length from a ten- sion test with an aluminum specimen. The specimen has a round cross sec- tion with a radius of 0.25 in. (before the test). The initial gauge length is 0.5 in. Use the data to calculate and generate the engineering and true stress- strain curves, both on the same plot. Label the axes and use a legend to identify the curves. Units:…arrow_forward
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