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Question 2-Page 39 #13 A piece of wire is cut into two pieces, A and B,...
A piece of wire has a resistance R. It is cut into two pieces of equal...
A piece of wire has a resistance R. It is cut into two pieces of equal length, and the pieces are twisted together parallel to each other. Part A What is the ratio of the resistance of the resulting wire to R?
8. A piece of wire of length L cm is cut into two pieces. One piece,...
8. A piece of wire of length L cm is cut into two pieces. One piece, of length x cm, is made into a circle; the rest is made into a square. Denote by A(z) the sum of the area of the circle and the area of the square. (a) (5 points) Find Im which makes A(z) MINIMUM, and find A(I'm). (b) (5 points) Find am which makes A(z) MAXIMUM, and find A(IM).
8. A piece of wire of length L cm is cut into two pieces. One piece,...
8. A piece of wire of length L cm is cut into two pieces. One piece, of length x cm, is made into a circle; the rest is made into a square. Denote by A(x) the sum of the area of the circle and the area of the square. (a) (5 points) Find I'm which makes A(z) MINIMUM, and find A(1m). (b) (5 points) Find xm which makes A(x) MAXIMUM, and find A(zm).
Two pieces of wire arc soldered together and connected to a battery as shown. Each piece...
Two pieces of wire arc soldered together and connected to a battery as shown. Each piece has the same diameter and length, but the second piece is made of a material whose resistivity is three times larger than the first. (a.) What is the ratio of the current flowing through the first piece to the current flowing through the second piece? Explain. (b.) What is the ratio of the potential difference across the first piece to the potential difference across...
Two wires, each of length 1.2 m, are stretched between two fixed supports. On wire A...
Two wires, each of length 1.2 m, are stretched between two fixed supports. On wire A there is a second-harmonic standing wave whose frequency is 731 Hz. However, the same frequency of 731 Hz is the third harmonic on wire B. Find the speed at which the individual waves travel on each wire.
A wire 48 cm long is cut into two pieces and each piece is bent to...
A wire 48 cm long is cut into two pieces and each piece is bent to form a square. How long should each piece be to minimize the sum of the areas of the two squares? 19. A baseball is hit vertically at a velocity of 50 ft per sec. What is the maximum height that the ball will reach, and after how many seconds does the ball reach its maximum height? (The height after t seconds is given by...
A steel wire having a mass of 6.30 g and a length of 1.20 m is...
A steel wire having a mass of 6.30 g and a length of 1.20 m is fixed at both ends and has a tension of 955 N. (a) Find the speed of transverse waves on the wire. 1 405 Incorrect: Your answer is incorrect. m/s (b) Find the wavelength of the fundamental. 2 m (c) Find the frequency of the fundamental. 3 Hz (d) Find the frequency of the second harmonic. 4 Hz (e) Find the frequency of the third...
Q. A steel wire with mass 37.0 g and length 7.10 m is stretched tightly between...
Q. A steel wire with mass 37.0 g and length 7.10 m is stretched tightly between its two endpoints. In its fundamental mode, the wire vibrates at a frequency of 59.0 Hz. When plucked, traveling waves bounce from one end to the other. a) What is the speed of waves propagating along the wire? b) Calculate the tension in the wire. c) A standing wave at the fundamental frequency has an amplitude of 0.340 cm . Calculate the magnitude of...
A combination work of art/musical instrument is illustrated. Four pieces of identical piano wire (cut to...
A combination work of art/musical instrument is illustrated. Four pieces of identical piano wire (cut to different lengths) are hung from the same support, and masses are hung from the free end of each wire. Each wire is 1, 2, or 3 units long, and each supports 1 or 2 units of mass. The mass of each wire is negligible compared to the total mass hanging from it. When a strong breeze blows, the wires vibrate and create an eerie...
Please submit the answer to this problem on a separate piece of paper, in submission box....
Please submit the answer to this problem on a separate piece of paper, in submission box. A 121-cm-long, 4.00 g string oscillates in its n = 6 mode with a frequency of 180 Hz and a maximum amplitude of 5.00 mm. Find (a) the wavelength of 1st, 2nd, and 3rd harmonic; (b) the frequency of 1st, 2nd, and 3rd harmonic; (c) the speed of the wave in the string: (a) the tension in the string. Hint: Draw pictures of the...
8. A piece of wire of length L cm is cut into two pieces. One piece, of length x cm, is made into a circle; the rest is made into a square. Denote by A(z) the sum of the area of the circle and the area of the square. (a) (5 points) Find Im which makes A(z) MINIMUM, and find A(I'm). (b) (5 points) Find am which makes A(z) MAXIMUM, and find A(IM).
8. A piece of wire of length L cm is cut into two pieces. One piece, of length x cm, is made into a circle; the rest is made into a square. Denote by A(x) the sum of the area of the circle and the area of the square. (a) (5 points) Find I'm which makes A(z) MINIMUM, and find A(1m). (b) (5 points) Find xm which makes A(x) MAXIMUM, and find A(zm).
Two pieces of wire arc soldered together and connected to a battery as shown. Each piece has the same diameter and length, but the second piece is made of a material whose resistivity is three times larger than the first. (a.) What is the ratio of the current flowing through the first piece to the current flowing through the second piece? Explain. (b.) What is the ratio of the potential difference across the first piece to the potential difference across...
A wire 48 cm long is cut into two pieces and each piece is bent to form a square. How long should each piece be to minimize the sum of the areas of the two squares? 19. A baseball is hit vertically at a velocity of 50 ft per sec. What is the maximum height that the ball will reach, and after how many seconds does the ball reach its maximum height? (The height after t seconds is given by...
Please submit the answer to this problem on a separate piece of paper, in submission box. A 121-cm-long, 4.00 g string oscillates in its n = 6 mode with a frequency of 180 Hz and a maximum amplitude of 5.00 mm. Find (a) the wavelength of 1st, 2nd, and 3rd harmonic; (b) the frequency of 1st, 2nd, and 3rd harmonic; (c) the speed of the wave in the string: (a) the tension in the string. Hint: Draw pictures of the...
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