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You are the Grand Engineer for the Island Nation of Bthththx (pronounced as written). Each year, on the last day of summer, a new Knightship of Bthththx is awarded to the winner of the Very Serious Skipping and Clapping Race, in which participants (18 years of age and older) must skip and clap through a full lap around the island's perimeter, adhering to the rather strict regulations of the National Skipping and Clapping Federation. The race begins when the Venerable Leader of Bthththx plucks a single note on the Most Perfect Plucking Instrument, which consists of a single 1mm thick platinum wire stretched between two points on a solid gold frame, as shown in the picture. To achieve the proper note, the wire must be at a tension of 800N. On the morning of the race, you notice the temperature is a chilly 5 degrees Celcius but that the temperature is forecast to rise to 25 degrees Celcius by 2pm when the race starts. It is your duty as Grand Engineer to set the tension of the wire, so that it will play just the right note when plucked at 2pm. To what tension should you set it? Hint: Assume that the expansion of the gold is unaffected by the presence of the wire. You do not ed ow length of wire. It would be helpful if you do the Mastering Physics question with the brass rod and wires before this question.

You are the Grand Engineer for the Island Nation of Bthththx (pronounced as written). Each year, on the last day of summer, a new Knightship of Bthththx is awarded to the winner of the Very Serious Skipping and Clapping Race, in which participants (18 years of age and older) must skip and clap through a full lap around the island's perimeter, adhering to the rather strict regulations of the National Skipping and Clapping Federation. The race begins when the Venerable Leader of Bthththx plucks a single note on the Most Perfect Plucking Instrument, which consists of a single 1mm thick platinum wire stretched between two points on a solid gold frame, as shown in the picture. To achieve the proper note, the wire must be at a tension of 800N. On the morning of the race, you notice the temperature is a chilly 5 degrees Celcius but that the temperature is forecast to rise to 25 degrees Celcius by 2pm when the race starts. It is your duty as Grand Engineer to set the tension of the wire, so that it will play just the right note when plucked at 2pm. To what tension should you set it? Hint: Assume that the expansion of the gold is unaffected by the presence of the wire. You do not ed ow length of wire. It would be helpful if you do the Mastering Physics question with the brass rod and wires before this question.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Question 1: You are the Grand Engineer for the Island Nation of Bthththx (pronounced as written). Each year, on the last day of summer, a new Knightship of Bthththx is awarded to the winner of the Very Serious Skipping and Clapping Race, in which participants (18 years of age and older) must skip and clap through a full lap around the island's perimeter, adhering to the rather strict regulations of the National Skipping and Clapping Federation. The race begins when the Venerable Leader of Bthththx plucks a single note on the Most Perfect Plucking Instrument, which consists of a single 1mm thick platinum wire stretched between two points on a solid gold frame, as shown in the picture. To achieve the proper note, the wire must be at a tension of 800N. On the morning of the race, you notice the temperature is a chilly 5 degrees Celcius but that the temperature is forecast to rise to 25 degrees Celcius by 2pm when the race starts. It is your duty as Grand Engineer to set the tension of the wire, so that it will play just the right note when plucked at 2pm. To what tension should you set it? Hint: Assume that the expansion of the gold is unaffected by the presence of the wire. You do not need to know the length of the wire. It would be helpful if you do the Mastering Physics question with the brass rod and wires before this question.
Transcribed Image Text:Question 1: You are the Grand Engineer for the Island Nation of Bthththx (pronounced as written). Each year, on the last day of summer, a new Knightship of Bthththx is awarded to the winner of the Very Serious Skipping and Clapping Race, in which participants (18 years of age and older) must skip and clap through a full lap around the island's perimeter, adhering to the rather strict regulations of the National Skipping and Clapping Federation. The race begins when the Venerable Leader of Bthththx plucks a single note on the Most Perfect Plucking Instrument, which consists of a single 1mm thick platinum wire stretched between two points on a solid gold frame, as shown in the picture. To achieve the proper note, the wire must be at a tension of 800N. On the morning of the race, you notice the temperature is a chilly 5 degrees Celcius but that the temperature is forecast to rise to 25 degrees Celcius by 2pm when the race starts. It is your duty as Grand Engineer to set the tension of the wire, so that it will play just the right note when plucked at 2pm. To what tension should you set it? Hint: Assume that the expansion of the gold is unaffected by the presence of the wire. You do not need to know the length of the wire. It would be helpful if you do the Mastering Physics question with the brass rod and wires before this question.
chocolate Icm marshmallow 2cm 0.2cm ← graham cracker Question 2 In your first assignment as Chief Dessert Engineer for the United Cookie Corporation, you design a cookie whose interior is a layer of marshmallow surrounded by a ring of chocolate. The top and bottom are round graham crackers, to which the marshmallow and chocolate are attached securely. After the graham crackers are attached, and the entire cookie is in equilibrium at 10°C, there is no stress in the marshmallow or chocolate. The chocolate will separate from the graham cracker if the (vertical) tensile stress in the chocolate exceeds 1.3 x 10³ Pa. What is the maximum temperature increase the cookies can withstand without the chocolate separating? chocolate separating ΔΤ Marshmallow: Y = 1.0 x 104 Pa, α = 0.0025K-¹ Chocolate: Y = 1.5 x 105 Pa and a = 0.0010K-¹ Assume the graham cracker does not bend and ignore effects related to expansion in the horizontal directions.
Transcribed Image Text:chocolate Icm marshmallow 2cm 0.2cm ← graham cracker Question 2 In your first assignment as Chief Dessert Engineer for the United Cookie Corporation, you design a cookie whose interior is a layer of marshmallow surrounded by a ring of chocolate. The top and bottom are round graham crackers, to which the marshmallow and chocolate are attached securely. After the graham crackers are attached, and the entire cookie is in equilibrium at 10°C, there is no stress in the marshmallow or chocolate. The chocolate will separate from the graham cracker if the (vertical) tensile stress in the chocolate exceeds 1.3 x 10³ Pa. What is the maximum temperature increase the cookies can withstand without the chocolate separating? chocolate separating ΔΤ Marshmallow: Y = 1.0 x 104 Pa, α = 0.0025K-¹ Chocolate: Y = 1.5 x 105 Pa and a = 0.0010K-¹ Assume the graham cracker does not bend and ignore effects related to expansion in the horizontal directions.
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