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The electromagnetic waves utilized in a microwave oven have a wave length of 12.24 cm.
a) What is the frequency of this radiation?
b) Electromagnetic waves in a microwave can exhibit standing waves. If there is a standing wave in your microwave oven, what is the distance among nodes?
c) Based on your answer in part (b), why do you think microwave ovens contain rotating carousels?
The wattage of a commercial ice maker is 212 W and is the rate at which it does work. The ice maker operates just like a refrigerator and has a coefficient of performance of 3.60. The water going into the unit has a temperature of 16.0°C, and the ..
A 48 kg woman cheats on her diet and eats a 507 Calorie (507 kcal) jelly donut for breakfast, How many joules of energy are the equivalent of one jelly doughnut
A man pushes a 2.0 kg broom at a constant speed across the floor.The broom handle makes a 50 degree angle with the floor. He pushes the broom with a 5.0 N force. Sum the forces in the y-direction. What is the value of the normal force?
If you see the displayed waveform on an oscilloscope screen,given that voltage scale is 50 millivolt/division, and the timescale is 100 milliseconds/div What is the peak-to-peak amplitude for the waveform ?
State and explain equipartition theorem. What is the physical meaning of equation: Uthermal = N f k T. Why is Uthermal not the total energy of a system?
we know that the magnitudes of the negative charge on the electron and the positive charge on the proton are equal.
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of -0.7250N when separated by 50 cm, center-to-center. Thespheres are then connected by a thin conducting wire. When the wireis removed, the spheres r..
An iron rod is heated by a welder's torch. Initially it glows a dull red, then a brighter orange, and finally very bright white. Discuss this sequence in terms of black-body radiation.
A 45.0-kg girl is standing on a 158-kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. What is the velocity of the plank relative to the surface of ice
An undamped 1.42-kg horizontal spring oscillator has a spring constant of 29.9 N/m. While oscillating, it is found to have a speed of 2.53 m/s as it passes through its equilibrium positio
F = G.Mm/r2 where F is the gravitational force, M and m are masses, and r is a length. Force has the SI units kg · m/s2. What are the SI units of the proportionality constant G
Determine the mass of a 4.6 meter beam, if it is balanced on a fulcrum 2.16 meters from the left end. A 820 N man stands on the very left end
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