A certain brand of hotdog cooker works by applying a potential difference of 147 V across opposite ends of a hot dog and allowing it to cook by means of the thermal energy produced. The current is 10.8 A, and the energy required to cook one hot dog is 63.1 kJ. If the rate at which energy is supplied is unchanged, how long will it take to cook three hot dogs simultaneously?

A certain brand of hotdog cooker works by applying a potential difference of 147 V across opposite ends of a hot dog and allowing it to cook by means of the thermal energy produced. The current is 10.8 A, and the energy required to cook one hot dog is 63.1 kJ. If the rate at which energy is supplied is unchanged, how long will it take to cook three hot dogs simultaneously?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 9OQ

See similar textbooks

Similar questions

A heart defibrillator is used to enable the heart to start beating if it has stopped. This is done by passing a large current of 12 A through the body at 25 V for a very short time, usually about 3 milliseconds. How much energy is transferred from the defibrillator to the body? Choices: 0.30 J 0.90 J 900 J 300 J
Switch S shown in Figure P28.71 has been closed for a long lime, and the electric circuit carries a constant current. Take C1 = 3.00 μF, C2 = 6.00 μF, R1 = 4.00 kΩ, and R2 , = 7.00 kΩ. The power delivered to R2 , is 2.40 W. (a) Find the charge on C1 . (b) Now the switch is opened. After many milliseconds, by how much has the charge on C2 changed?
A piece of a conductive square-shaped material with a side length of 3 cm and placed in an electric field of 3v / m and passed through it a current of density 3A / m ^ 2 How much electrical resistance does this piece have?
What current (in A) must be produced by a 12.0 V battery-operated bottle warmer in order to heat 70.0 g of glass, 200 g of baby formula, and 3.50 ✕ 102 g of aluminum from 20.0°C to 90.0°C in 4.70 min? (Assume the specific heats of glass, baby formula, and aluminum are 840 J/(kg · °C), 4,186 J/(kg · °C), and 900 J/(kg · °C), respectively.)
A well-insulated electric water heater warms 107 kg of water from 20.0°C to 41.0°C in 29.0 min. Find the resistance (in Ω) of its heating element, which is connected across a 240 V potential difference. Ω (b) What If? How much additional time (in min) would it take the heater to raise the temperature of the water from 41.0°C to 100°C? min (c) What would be the total amount of time (in min) required to evaporate all of the water in the heater starting from 20.0°C? min
A spool of tungsten wire 200 m long and with a diameter of 0.360 mm is at 20.0°C. For tungsten, the resistivity is 5.60 ✕ 10−8 Ω · m and the temperature coefficient of resistivity is 4.50 ✕ 10−3 (°C)−1. (a) What is the magnitude of the electric field (in V/m) in the wire if it carries a current of 0.450 A? V/m (b) What is the electric power (in W) delivered to the spool while it carries a current of 0.450 A? W (c) What is the power (in W) delivered to the spool if the potential difference across the wire is held constant and the temperature is increased to 310°C? W
A person standing barefoot on the ground 20 m from the point of a lightning strike experiences an instantaneous potential difference of 300 V between his feet. If we assume a skin resistance of 1.0 kΩ, how much current goes up one leg and back down the other?
20. TTWO resistors, R1 = 15 Q and R2 = 30 Q are connected parallel to a potential difference of 60 V. What is the electric current flowing through the 15 0 resistor ?
The discharging current in the atmosphere due to the small conductivity of air is known to be 1800 A on an average over the globe. Why then does the atmosphere not discharge itself completely in due course and become electrically neutral? In other words, what keeps the atmosphere charged?
The current in a wire varies with time according to the relationship I = 55 A - (0.65 A/s2)t2. (a) How many coulombs of charge pass a cross section of the wire in the time interval between t = 0 and t = 8.0 s? (b) What constant current would transport the same charge in the same time interval?
A spool of iron wire 260 m long and with a diameter of 0.320 mm is at 20.0°C. For iron, the resistivity is 10.0 ✕ 10−8 Ω · m and the temperature coefficient of resistivity is 5.00 ✕ 10−3 (°C)−1. (a) What is the magnitude of the electric field (in V/m) in the wire if it carries a current of 0.550 A? V/m (b) What is the electric power (in W) delivered to the spool while it carries a current of 0.550 A? W (c) What is the power (in W) delivered to the spool if the potential difference across the wire is held constant and the temperature is increased to 280°C? W
If connected to a 3 V potential difference, a certain resistor dissipates 0.5 W. How much energy would the resistor dissipate if it is connected to a 1 V potential difference? A. 0.056 W. B. 0.167 W. C. 0.5 W. D. 1.5 W. E. Cannot be determined.