Homework Answers
Area is given by
A = pi*d2/4 = pi*(0.51*10-3)2/4
A=2.043*10-7 m2
Young's Modulus is given by
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(5%) Problem 6: The "lead" in pencils is a graphite composition with a Young's modulus of about 1.10 N/m. AL Calcul...
(14%) Problem 2: The "lead" in pencils is a graphite composition with a Young's modulus of...
(14%) Problem 2: The "lead" in pencils is a graphite composition with a Young's modulus of about 1.10 N/m. * Calculate how much shorter (in mm) the length of the lead becomes in an automatic pencil if you tap it straight into the pencil with a force of 4.8 N. The lead is 0.55 mm in diameter and 61 mm long. Grade Summary AL = 3.391 Deductions 12% Potential 88% sin() cos t an() cotan) asin() acos() atan) acotan sinh)...
(205) Problem 5: Suppose a piano tuner stretches a steel piano wire 5.5 mm. The wire...
(205) Problem 5: Suppose a piano tuner stretches a steel piano wire 5.5 mm. The wire was originally 0.775 mm in diameter, 1.29 m long, and has a Young's modulus of 2.10x10' N/m². Randomized Variables lo = 1.29 m 1=5.5 mm d=0.775 mm Calculate the force a piano tuner applies to stretch the steel piano wire in Newtons. Grade Summary Deductions Potential 100% ) 7 8 9 sin cotano cos asino t an) acos() 4 5 6 Submissions Attempts remaining:...
please help i dont understand. (10%) Problem 3: With the aid of a string, a gyroscope...
please help i dont understand.
(10%) Problem 3: With the aid of a string, a gyroscope is accelerated from rest to rad/s in 0.39. Randomized Variables c = 37 rad's t = 0.39 5 DA 50% Part (a) What is its angular acceleration, in radians per square seconds Grade Summary Deductions Potential 100% sino cos cotano asino atan acotan cosh tanh Degrees 11 t ano acos sinh cotanh) Radians Submissions Attempts remag per attempt detailed in Submit Hint I give...
(5%) Problem 8: Consider a 470 nm wavelength blue light falling on a pair of slits...
(5%) Problem 8: Consider a 470 nm wavelength blue light falling on a pair of slits separated by 0.035 mm. A At what angle (in degrees) is the first-order maximum for the blue light? Grade Summary Deductions 0% Potential 100% sino TT ( 9 HOME 7 8 45 E 6 cotan atan cosh cos tano asino acos acotan tanh cotanh Degrees O Radians Submissions Attempts remaining: 3 (0% per attempt) letailed view sinho 12 برا + - 0 END NO...
(5%) Problem 9: Light of wavelength 624 nm in air undergoes constructive interference when it is...
(5%) Problem 9: Light of wavelength 624 nm in air undergoes constructive interference when it is perpendicularly reflected from an oil spill on a plastic sheet. The refractive index of the oil is 1.22 and that of the plastic is 1.43. A What is the nonzero thickness, in nanometers of the thinnest oil film that causes such interference? 1 = Grade Summary Deductions Potential 0% 100% ( 7 8 9 HOME E 4 5 6 sin cos tano cotano asino...
(25%) Problem 4: A shopper standing 3.25 m from a convex security mirror sees his image...
(25%) Problem 4: A shopper standing 3.25 m from a convex security mirror sees his image with a magnification of 0.275. 33% Part (a) What is his image distance in meters, measured from the surface of the mirror, given that the object distance is positive? d; = -0.89 d;=-0.89 Correct! 33% Part (b) What is the focal length of the mirror, in meters? f = -0.821 sino cos tan() cotan asino acos atan) acotan sinh cosh tanh) cotanh) Degrees Radians...
(20%) Problem 5: A frequently quoted rule of thumb in aircraft design is that wings should...
(20%) Problem 5: A frequently quoted rule of thumb in aircraft design is that wings should produce about 1000 N of lift per square meter of wing. (The fact that a wing has a top and bottom surface does not double its area.) > A 50% Part (a) At takeoff, an aircraft travels at 67 m/s, so that the air speed relative to the bottom of the wing is 67 m/s. Given the sea level density of air to be...
Please show all work and rationale. (10%) Problem 7: Consider the circuit in the diagram, with...
Please show all work and
rationale.
(10%) Problem 7: Consider the circuit in the diagram, with sources of emf listed below. Randomized Variables & = 27 V E = 46 V &z = 10.5 V & 4 = 43 V 3 R 200 Otheexpertta.com > A 33% Part (a) Find I in amps. 1;= Grade Summary Deductions Potential 100% 0% HOME E sin cos t an() cotano asin( acos atan acotan sinh cosh) | tanh) | cotanh) Degrees O Radians...
(6%) Problem ll: An object with height 0.95 cm is placed a distance 21 cm in...
(6%) Problem ll: An object with height 0.95 cm is placed a distance 21 cm in front of a thin converging lens with focal length 6.75 cm, as shown The focal point locations are indicated by the small black circles. A 20% Part (a) Calculate and enter a value for the distance between the image and the lens given the values in problem statement. di = cm Grade Summary Deductions 0% Potential 100% п 7 8 9 HOME E TA...
(15%) Problem 9: Two planets are on a collision course, heading directly towards each other at...
(15%) Problem 9: Two planets are on a collision course, heading directly towards each other at a relative speed of 0.245c. Randomized Variables y = 0.245 c u= 0.75 DA A spaceship sent from one planet approaches the second at 0.75c as seen by the second planet. What is the velocity of the ship relative to the first planet? Assume the a velocity directed away from the planet would be considered positive. Grade Summary u'c = Deductions 0% Potential 10096...
(14%) Problem 2: The "lead" in pencils is a graphite composition with a Young's modulus of about 1.10 N/m. * Calculate how much shorter (in mm) the length of the lead becomes in an automatic pencil if you tap it straight into the pencil with a force of 4.8 N. The lead is 0.55 mm in diameter and 61 mm long. Grade Summary AL = 3.391 Deductions 12% Potential 88% sin() cos t an() cotan) asin() acos() atan) acotan sinh)...
(205) Problem 5: Suppose a piano tuner stretches a steel piano wire 5.5 mm. The wire was originally 0.775 mm in diameter, 1.29 m long, and has a Young's modulus of 2.10x10' N/m². Randomized Variables lo = 1.29 m 1=5.5 mm d=0.775 mm Calculate the force a piano tuner applies to stretch the steel piano wire in Newtons. Grade Summary Deductions Potential 100% ) 7 8 9 sin cotano cos asino t an) acos() 4 5 6 Submissions Attempts remaining:...
please help i dont understand.
(10%) Problem 3: With the aid of a string, a gyroscope is accelerated from rest to rad/s in 0.39. Randomized Variables c = 37 rad's t = 0.39 5 DA 50% Part (a) What is its angular acceleration, in radians per square seconds Grade Summary Deductions Potential 100% sino cos cotano asino atan acotan cosh tanh Degrees 11 t ano acos sinh cotanh) Radians Submissions Attempts remag per attempt detailed in Submit Hint I give...
(5%) Problem 8: Consider a 470 nm wavelength blue light falling on a pair of slits separated by 0.035 mm. A At what angle (in degrees) is the first-order maximum for the blue light? Grade Summary Deductions 0% Potential 100% sino TT ( 9 HOME 7 8 45 E 6 cotan atan cosh cos tano asino acos acotan tanh cotanh Degrees O Radians Submissions Attempts remaining: 3 (0% per attempt) letailed view sinho 12 برا + - 0 END NO...
(5%) Problem 9: Light of wavelength 624 nm in air undergoes constructive interference when it is perpendicularly reflected from an oil spill on a plastic sheet. The refractive index of the oil is 1.22 and that of the plastic is 1.43. A What is the nonzero thickness, in nanometers of the thinnest oil film that causes such interference? 1 = Grade Summary Deductions Potential 0% 100% ( 7 8 9 HOME E 4 5 6 sin cos tano cotano asino...
(25%) Problem 4: A shopper standing 3.25 m from a convex security mirror sees his image with a magnification of 0.275. 33% Part (a) What is his image distance in meters, measured from the surface of the mirror, given that the object distance is positive? d; = -0.89 d;=-0.89 Correct! 33% Part (b) What is the focal length of the mirror, in meters? f = -0.821 sino cos tan() cotan asino acos atan) acotan sinh cosh tanh) cotanh) Degrees Radians...
(20%) Problem 5: A frequently quoted rule of thumb in aircraft design is that wings should produce about 1000 N of lift per square meter of wing. (The fact that a wing has a top and bottom surface does not double its area.) > A 50% Part (a) At takeoff, an aircraft travels at 67 m/s, so that the air speed relative to the bottom of the wing is 67 m/s. Given the sea level density of air to be...
Please show all work and
rationale.
(10%) Problem 7: Consider the circuit in the diagram, with sources of emf listed below. Randomized Variables & = 27 V E = 46 V &z = 10.5 V & 4 = 43 V 3 R 200 Otheexpertta.com > A 33% Part (a) Find I in amps. 1;= Grade Summary Deductions Potential 100% 0% HOME E sin cos t an() cotano asin( acos atan acotan sinh cosh) | tanh) | cotanh) Degrees O Radians...
(6%) Problem ll: An object with height 0.95 cm is placed a distance 21 cm in front of a thin converging lens with focal length 6.75 cm, as shown The focal point locations are indicated by the small black circles. A 20% Part (a) Calculate and enter a value for the distance between the image and the lens given the values in problem statement. di = cm Grade Summary Deductions 0% Potential 100% п 7 8 9 HOME E TA...
(15%) Problem 9: Two planets are on a collision course, heading directly towards each other at a relative speed of 0.245c. Randomized Variables y = 0.245 c u= 0.75 DA A spaceship sent from one planet approaches the second at 0.75c as seen by the second planet. What is the velocity of the ship relative to the first planet? Assume the a velocity directed away from the planet would be considered positive. Grade Summary u'c = Deductions 0% Potential 10096...
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