On its highest power setting, a microwave oven increases the temperature of 0.400 kg of spaghetti by 45.0 °C in 120 s. (a) What was the rate of energyabsorption by the spaghetti, given that its specific heat is 3.76 × 103 J/kg · °C ? Assume the spaghetti is perfectly absorbing. (b) Find the average intensity of the microwaves, given that they are absorbed over a circular area 20.0 cm in diameter. (c) What is the peak electric field strength of the microwave? (d) What is its peak magnetic field strength?
On its highest power setting, a microwave oven increases the temperature of 0.400 kg of spaghetti by 45.0 °C in 120 s. (a) What was the rate of energyabsorption by the spaghetti, given that its specific heat is 3.76 × 103 J/kg · °C ? Assume the spaghetti is perfectly absorbing. (b) Find the average intensity of the microwaves, given that they are absorbed over a circular area 20.0 cm in diameter. (c) What is the peak electric field strength of the microwave? (d) What is its peak magnetic field strength?
Chapter16: Electromagnetic Waves
Section: Chapter Questions
Problem 93AP: On its highest power setting, a microwave oven increases the temperature of 0.400 kg of spaghetti by...
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On its highest power setting, a microwave oven increases the temperature of 0.400 kg of spaghetti by 45.0 °C in 120 s. (a) What was the rate of energy
absorption by the spaghetti, given that its specific heat is 3.76 × 103 J/kg · °C ? Assume the spaghetti is perfectly absorbing. (b) Find the average intensity of the microwaves, given that they are absorbed over a circular area 20.0 cm in diameter. (c) What is the peak electric field strength of the microwave? (d) What is its peak magnetic field strength?
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