A strand of dragline spider silk has a diameter of 6.0 μm, and can support a mass of 2.9 g. Approximately how many copper wires would it take to support the same mass?

Q: Many caterpillars construct cocoons from silk, one of the strongest naturally occurring materials…

A: (a)Write the expression for young’s modulus of the material.

Q: 200 150 100 --- Material X 50 Material Y • Material Z 0.000 0.005 0.010 0.015 0.020 0.025 Strain (ɛ)…

A: SOlution: Given that d = 3 mmL =1.25 ftstrain ε = 0.045

Q: When subjected to a force of compression, the length of a bone (compression Young's modulus 9.4x 10°…

A:

Q: A 100 N picture hangs from a nail in the wall. The diameter of the nail is 3.00 mm. The shear stress…

A: Write the given values with the suitable variables. F=100Nd=3 mm=3×10-3 m Here, F is the force and d…

Q: A lift of mass 1400 kg is suspended by a steel cable. The lift can move upwards at a maximum…

A: Solution

Q: An ACL has an unloaded length of 3.8 cm and is subject to a tension stress that results in a 5%…

A: Given,

Q: Humans can bite with a force of approximately 809 N. If a human tooth has the Young's modulus of…

A: The Young's modulus of bone is 18×109 Pa. the change in length is, ∆l=FlAY

Q: One end of a brass wire 120 cm long and a diameter of 0.24 cm is fastened to a point in the ceiling.…

A: Length of wire l=120 cm, diameter of the wire d=0.24 cm (radius r=d/2=0.12 cm), weight of the body…

Q: A solid steel shaft will not twist through more than 3° in a 6.0 m length when subjected to a torque…

A:

Q: A solid copper cube has an edge length of 88.3 cm. How much stress must be applied to the cube to…

A: Original length (L) = 88.3 cm New length (L') = 88 cm

Q: A 0.600-mm diameter wire stretches 0.500% of its length when it is stretched with a tension of 20.0…

A:

Q: empt in Progress When subjected to a force of compression, the length of a bone (compression Young's…

A: Given  Compression young modulus ,Yc = 9.4×109 N/m2  Tensile young modulus, Yt =1.6×1010 N/m2…

Q: 2. A human biceps(upper arm muscle) may exert a force of the order of 600N (about 135 Ib) on the…

A: Tensile stress is defined as the force per unit area produced in the body as a result of an…

Q: A copper wire of length 8.7 m , cross sectional area 1.3 x 10-6m2and Young’s modulus 11 x 1010 N/m2…

A:

Q: A solid copper cube has an edge length of 82.4 cm. How much stress must be applied to the cube to…

A: Write the given values with the suitable variables. L1=82.4 cm=0.824 mL2=82 cm=0.82 mK=1.4×1011 N/m2…

Q: A solid copper cube has an edge length of 86.9 cm. How much stress must be applied to the cube to…

A: Write the given values with the suitable variables. L1=86.9 cmL2=86 cmk=1.4×1011 N/m2 Here, L2, L1,…

Q: Humans can bite with a force of approximately 793 N. If a human tooth has the Young's modulus of…

A:

Q: A 1.05-m-long rod of negligible weight is supported at its ends by wires A and B of equal length…

A: Solution:-

Q: A cable is 10.0 m long and has a diameter of 2.00 mm. A force of 45.0 N is applied to the end of the…

A:

Q: A particular human hair has a Young's modulus of 3.31 x 10° N/m2 and a diameter of 145 um. If a 236…

A:

Q: A solid copper cube has an edge length of 89.9 cm. How much stress must be applied to the cube to…

A: The ratio of volumetric stress with volumetric strain is defined as the bulk modulus. To solve the…

Q: A violin string has a radius of 4.1 x 104m. During tuning, 32.5 cm of the string is placed under a…

A: Given Initial lenth of string is 32.5 cm Elongation of lenth is 0.93 cm Assume elongation in elastic…

Q: A solid copper cube has an edge length of 81.6 cm. How much stress must be applied to the cube to…

A: Given: L=81.6 cmL'=81.0 cmB=1.4*1011 N/m2

Q: Find the minimum diameter of a (50 m)- long nylon string that will stretch no more than (1 cm) when…

A:

Q: Assume Young's modulus for bone is 1.50 x 1010 N/m2. The bone breaks if stress greater than o= 45844…

A: Young's modulus is Y= 1.5×10¹⁰  N/m²  Maximum stress is σ = 45844 N/m²  Effective radius of the bone…

Q: When using a pencil eraser, you exert a downward force of 5.5 N at a distance of 1.9 cm from the…

A:

Q: What is the stress for a wire of 5 m long so that the strain is 2% of 0.2? The cross-sectional area…

A:

Q: A mass is hung from identical wires made of iron, lead, nickel, steel, and brass. Which wire will…

A:

Q: Assume Young's modulus for bone is 1.50 x 1010 N/m2. The bone breaks if stress greater than 1.50 x…

A: Given :      Young's modulus for bone, Y = 1.50*1010 N/m2       Stress to break the bone, S =…

Q: Young's modulus of iron rod is 21 x 1010 N/m². A force of 7.0 × 105 N is applied to a 1.5-m length…

A: Youngs modulus = stressstrain=F/A∆L/L

Q: A violin string has a radius of 4.1 x 10* m. During tuning, 32.5 cm of the string is placed under a…

A:

Q: A wire has a mass 5.3 g and length 2.50m. A force of 50 N can extend it by 2.3 mm. Determine (a) the…

A: we know that  density = mass/volume 2.7x103=5.3x10-3A x 2.5Area = A = 7.85 x10-7 m2

Q: A solid copper cube has an edge length of 88.3 cm. How much stress must be applied to the cube to…

A: Initial length of edge of cube , l1 = 88.3 cm Final length of edge of cube, l2 = 88 cm Bulk modulus,…

Q: Humans can bite with a force of approximately 807 N. If a human tooth has the Young's modulus of…

A: The equation for Young's modulus is given by, Y=σe  (1) Here, σ is the stress and e is the strain.…

Q: Assume Young's modulus for bone is 1.50 x 1010 N/m2. The bone breaks if stress greater than 0= 62780…

A: Young's modulus for the bone,  Breaking stress,  Effective radius of the bone,

Q: A solid copper cube has an edge length of 89.6 cm. How much stress must be applied to the cube to…

A:

Q: A steel wire of length 1.93 m with a circular cross-section must stretch no more than 0.240 cm when…

A:

Q: determine the change in the tooth's length

A: Given data:     The force applied during bite is: F = 796 N The cross-sectional area of tooth is: A…

Q: A 5.0 x 102 N object is hung from the end of a wire of cross-sectional area 1x106 cm?. The wire…

A:

Q: A bar of aluminum has a cross section of 1.0 cm x 1.0 cm and a length of 86 cm. What force F would…

A: Write the given data. A=1 cm×1 cm=1×10-4 m2L=0.86 m∆=1-0.86 mE=69×109 Pa

Q: A satellite similar to the Tethered Satellite in the figure below has a mass of 550 kg and is at the…

A:

Q: Two wires of unknown compositions, same length, and same diameter were made to support a rod, which…

A: F1/A1>F2/A2

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!