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Question (part 1 of 2) Your response.. The wire in a house circuit is rated at...
002 10.0 points Does more current flow out of a battery than into it? Does more...
002 10.0 points Does more current flow out of a battery than into it? Does more current flow into a light bulb than out of it? 1. The same for both 2. less; more 3. More for both 4. Less for both 5. more; less 003 10.0 points A wire is made of a material with a resis- tivity of 8.45183 x 10-8 m. It has length 7.34815 m and diameter 0.81584 mm What is the resistance of the wire?...
Question (part 1 of 2) Your response... A 12.6 m long wire of resistance 19.7 Ω...
Question (part 1 of 2) Your response... A 12.6 m long wire of resistance 19.7 Ω carries a current of 4 A. What is the potetin the wire? Answer in units of V. Question (part 2 of 2) Your response... What is the magnitude of the electric field in the wire? Answer in units of V/m.
Question (part 1 of 2) Your respons Calculate the resistance per unit length of a nichrome...
Question (part 1 of 2) Your respons Calculate the resistance per unit length of a nichrome wire, which has a radius of 0.115 mm. The resistivity of nichrome is 1.5x 10-6 Ω . m. Answer in units of Ω/m Question (part 2 of 2) Your response.. If a potential difference of 15 V is main tained across a 5.3 m length of the nichrome wire, what is the current in the wire? Answer in units of A
Heat Loss and Heating Costs of a House Part A A house has well-insulated walls 17.1...
Heat Loss and Heating Costs of a House Part A A house has well-insulated walls 17.1 cm thick (assume conductivity of air) and area 411 m2, a roof of wood б.бб cm thick and area 279 m2, and uncovered windows 0.626 cm thick and total area 33.4 m2. Assuming that the heat loss is only by conduction, calculate the rate at which heat must be supplied to this house to maintain its temperature at 21.4°C if the outside temperature is...
1. The terminals of a 0.70 V watch battery are connected by a 130-m-long gold wire...
1. The terminals of a 0.70 V watch battery are connected by a 130-m-long gold wire with a diameter of 0.100 mm . What is the current in the wire? Express your answer using three significant figures in mA 2. A waterbed heater uses 500 W of power. It is on 35 % of the time, off 65 % .What is the annual cost of electricity at a billing rate of $0.12 per kWhr? Express your answer using two significant...
3. This question is a long free-response question. Show your work for each part of the...
3. This question is a long free-response question. Show your work for each part of the question. (12 points, suggested time 25 minutes) Students have a battery of emf with negligible internal resistance and many identical resistive heating elements and will connect a circuit so the heating elements can be used to heat some water. Each of the heating elements has resistance. (a) First the students consider connecting the heating elements in series with the battery, as shown above. One...
1. Part A What is the diameter of a 1.00-m length of tungsten wire whose resistance...
1. Part A What is the diameter of a 1.00-m length of tungsten wire whose resistance is 0.45 Ω ? Express your answer using two significant figures. 2. Part A What is the maximum instantaneous power dissipated by a 3.4-hp pump connected to a 240-Vrms ac power source? 1 hp = 746 W. Express your answer using two significant figures. Part B What is the maximum current passing through the pump? Express your answer to two significant figures and include...
A 9.00-cm-long wire is pulled along a U-shaped conducting rail in a perpendicular magnetic field. The...
A 9.00-cm-long wire is pulled along a U-shaped conducting rail in a perpendicular magnetic field. The total resistance of the wire and rail is 0.310 Ω . Pulling the wire at a steady speed of 4.00 m/s causes 4.30 W of power to be dissipated in the circuit. a. How big is the pulling force? Express your answer with the appropriate units. b. What is the strength of the magnetic field? Express your answer with the appropriate units.
011 (part 1 of 2) 10.0 points If a toaster is plugged into a source of...
011 (part 1 of 2) 10.0 points If a toaster is plugged into a source of alter- nating voltage with an rms value of 134 V, an rms current of 5.75 A occurs in the heating element. What is the resistance of the toaster's heat- ing element? Answer in units of Ω 012 (part 2 of 2) 10.0 points What is the average power input to the toaster? Answer in units of W.
012 (part 1 of 2) 10.0 points A cylinder with a(n) 1.9 cm radius and a length of 6.1 m is tightly wrapped with 2900 turns of wire. The current in the wire is decaying according tol-loe-at, with lo =...
012 (part 1 of 2) 10.0 points A cylinder with a(n) 1.9 cm radius and a length of 6.1 m is tightly wrapped with 2900 turns of wire. The current in the wire is decaying according tol-loe-at, with lo = 0.59 A and a-1.9 s-1 What is the electric field at a point 8.6 cm radially from the axis of the cylinder at t- 1.05263 s? Answer in units of V/m. 013 (part 2 of 2) 10.0 points A coil...
002 10.0 points Does more current flow out of a battery than into it? Does more current flow into a light bulb than out of it? 1. The same for both 2. less; more 3. More for both 4. Less for both 5. more; less 003 10.0 points A wire is made of a material with a resis- tivity of 8.45183 x 10-8 m. It has length 7.34815 m and diameter 0.81584 mm What is the resistance of the wire?...
Question (part 1 of 2) Your response... A 12.6 m long wire of resistance 19.7 Ω carries a current of 4 A. What is the potetin the wire? Answer in units of V. Question (part 2 of 2) Your response... What is the magnitude of the electric field in the wire? Answer in units of V/m.
Question (part 1 of 2) Your respons Calculate the resistance per unit length of a nichrome wire, which has a radius of 0.115 mm. The resistivity of nichrome is 1.5x 10-6 Ω . m. Answer in units of Ω/m Question (part 2 of 2) Your response.. If a potential difference of 15 V is main tained across a 5.3 m length of the nichrome wire, what is the current in the wire? Answer in units of A
Heat Loss and Heating Costs of a House Part A A house has well-insulated walls 17.1 cm thick (assume conductivity of air) and area 411 m2, a roof of wood б.бб cm thick and area 279 m2, and uncovered windows 0.626 cm thick and total area 33.4 m2. Assuming that the heat loss is only by conduction, calculate the rate at which heat must be supplied to this house to maintain its temperature at 21.4°C if the outside temperature is...
3. This question is a long free-response question. Show your work for each part of the question. (12 points, suggested time 25 minutes) Students have a battery of emf with negligible internal resistance and many identical resistive heating elements and will connect a circuit so the heating elements can be used to heat some water. Each of the heating elements has resistance. (a) First the students consider connecting the heating elements in series with the battery, as shown above. One...
011 (part 1 of 2) 10.0 points If a toaster is plugged into a source of alter- nating voltage with an rms value of 134 V, an rms current of 5.75 A occurs in the heating element. What is the resistance of the toaster's heat- ing element? Answer in units of Ω 012 (part 2 of 2) 10.0 points What is the average power input to the toaster? Answer in units of W.
012 (part 1 of 2) 10.0 points A cylinder with a(n) 1.9 cm radius and a length of 6.1 m is tightly wrapped with 2900 turns of wire. The current in the wire is decaying according tol-loe-at, with lo = 0.59 A and a-1.9 s-1 What is the electric field at a point 8.6 cm radially from the axis of the cylinder at t- 1.05263 s? Answer in units of V/m. 013 (part 2 of 2) 10.0 points A coil...
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