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a 25-kg piece of equipment can be hung by steel wires of
length 1.00 m, 2.00m,...
A steel wire of length 1.6 m and diameter 0.80 mm is joined to an aluminum...
A steel wire of length 1.6 m and diameter 0.80 mm is joined to an aluminum wire of identical dimensions to make a composite wire of length 3.2 m. Find the resulting change in length of this composite wire if an object with a mass of 5.00 kg is hung vertically from one of its ends. (Neglect any effect the masses of two wires have on the changes in their lengths.) mm
In the figure, a 140 kg uniform log hangs by two steel wires, A and B,...
In the figure, a 140 kg uniform log hangs by two steel wires, A and B, both of radius 1.00 mm. Initially, wire A was 2.50 m long and 2.20 mm shorter than wire B. The log is now horizontal. Young's modulus for steel is 2.00 × 1011 N/m2. What are the magnitudes of the forces on it from (a) wire A and (b) wire B? (c) What is the ratio dA/dB?
Consider two long, straight parallel wires separated by 1.00 m. In the figure below, the current...
Consider two long, straight parallel wires separated by 1.00 m.
In the figure below, the current through wire one is 1.00 A and is
directed out of the page. The direction and magnitude of the
current through wire two is unknown. Wire two is observed to be
attracted toward wire one with a force per unit length of
2.00×10^-7 N/m.
what is the current through wire two?
A) 1.00 A
B) 1.50 A
C) 2.00 A
D) 2.50 A
E)...
A sculptor has hung up a 42.0 kg horizontal rod of length 4.80 m . One...
A sculptor has hung up a 42.0 kg horizontal rod of length 4.80 m . One end of the rod is supported by a pivot, and the other end is held up by a wire. The wire makse a 30.0 ∘ angle with the rod. Part A If tension greater than 1400 N would snap the wire, what is the maximum distance from the pivot that a 65.0 kg person can sit on the rod?
A steel (density 7.86 x 103 kg/m3) wire of length 1.20 m and diameter 0.644 mm...
A steel (density 7.86 x 103 kg/m3) wire of length 1.20 m and diameter 0.644 mm is subjected to a tension of 34.5 N. At one end of the wire is an oscillator harmonically oscillating one end of the wire at a frequency of 60 Hz, the other end of the wire runs over a pulley to a hanging mass that supplies the tension.What is the wavelength of the waves produced by the oscillator?
1 Rev You want to produce three 1.00-mm-diameter cylindrical wires, each with a resistance of 5.00...
1 Rev You want to produce three 1.00-mm-diameter cylindrical wires, each with a resistance of 5.00 N at room temperature, One wire is gold, one is copper, and one is aluminum. Refer to Table 25. 1 in the textbook for the resistivity values. Part A What will be the length of the gold wire? Express your answer with the appropriate units. L 161 m Correct Part B What will be the length of the copper wire? Express your answer with...
EXAMPLE 14.8 Harmonics of a Stretched Wire GOAL Calculate string harmonics, relate them to sound, and...
EXAMPLE 14.8 Harmonics of a Stretched Wire GOAL Calculate string harmonics, relate them to sound, and combine them with tensile stress. PROBLEM (a) Find the frequencies of the fundamental, second, and third harmonics of a steel wire 1.00 m long with a mass per unit length of 2.00 x 10-kg/m and under a tension of 80.0 N. (b) Find the wavelengths of the sound waves created by the vibrating wire for all three modes. Assume the speed of sound in...
You are working at a company that manufactures electrical wire. Gold is the most ductile of...
You are working at a company that manufactures electrical wire. Gold is the most ductile of all metals: it can be stretched into incredibly long, thin wires. The company has developed a new technique that will stretch 1.00 g of gold into a wire of length L= 2.40 km and uniform diameter. a) What is 1 gm in kg, and what is the volume of 1 gm of gold? The mass density of gold ρ= 1.93 x 10^4 kg/m3. Watch...
A vertical solid steel post of diameter d = 27 cm and length L = 3.00 m is required to support a load of mass m = 8000 kg . You can ignore the weight of the post. Take free fall acceleration to be g=9...
A vertical solid steel post of diameter d = 27 cm and length L = 3.00 m is required to support a load of mass m = 8000 kg . You can ignore the weight of the post. Take free fall acceleration to be g=9.8m/ s 2 Part A What is the stress in the post? Express your answer using two significant figures. Part B What is the strain in the post? Express your answer using two significant figures. Part...
It is possible to crudely determine the resistivity of a material using the following equipment and...
It is possible to crudely determine the resistivity of a material using the following equipment and materials. Five coils of wire all made of the same unknown metal can be produced with characteristics shown in the table below. In addition to each coil being made of the same metal, each coil is wound using 10 meters of wire. The difference between each coil is the diameter of wire. Coil characteristics Length Coil Number Gauge (AWG) Diameter (mm) (m) 10 2.58826...
Consider two long, straight parallel wires separated by 1.00 m.
In the figure below, the current through wire one is 1.00 A and is
directed out of the page. The direction and magnitude of the
current through wire two is unknown. Wire two is observed to be
attracted toward wire one with a force per unit length of
2.00×10^-7 N/m.
what is the current through wire two?
A) 1.00 A
B) 1.50 A
C) 2.00 A
D) 2.50 A
E)...
1 Rev You want to produce three 1.00-mm-diameter cylindrical wires, each with a resistance of 5.00 N at room temperature, One wire is gold, one is copper, and one is aluminum. Refer to Table 25. 1 in the textbook for the resistivity values. Part A What will be the length of the gold wire? Express your answer with the appropriate units. L 161 m Correct Part B What will be the length of the copper wire? Express your answer with...
EXAMPLE 14.8 Harmonics of a Stretched Wire GOAL Calculate string harmonics, relate them to sound, and combine them with tensile stress. PROBLEM (a) Find the frequencies of the fundamental, second, and third harmonics of a steel wire 1.00 m long with a mass per unit length of 2.00 x 10-kg/m and under a tension of 80.0 N. (b) Find the wavelengths of the sound waves created by the vibrating wire for all three modes. Assume the speed of sound in...
It is possible to crudely determine the resistivity of a material using the following equipment and materials. Five coils of wire all made of the same unknown metal can be produced with characteristics shown in the table below. In addition to each coil being made of the same metal, each coil is wound using 10 meters of wire. The difference between each coil is the diameter of wire. Coil characteristics Length Coil Number Gauge (AWG) Diameter (mm) (m) 10 2.58826...
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