To understand the formula for power radiated in the form of electromagnetic energy by an object at nonzero temperature. every object at absolute (kelvin) temperature t will radiate electromagnetic waves. this radiation is typically in the infrared for objects at room temperature, with some visible light emitted for objects heated above 1000 k. the formula governing the rate of energy radiation from a surface is given by p=eσat4, where p is the thermal power (also known as the heat current h). part a this formula applies to this formula applies to any object of total surface area a, kelvin temperature t, and emissivity e any object of cross-sectional area a, kelvin temperature t, and emissivity e any object of total surface area a, kelvin temperature t, and emissivity σ any object of cross-sectional area a, kelvin temperature t, and emissivity σ request answer part b
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Physics, 21.06.2019 19:00, MIYAISSAVGE2409
Like a key in a lock, the shape of the. must bind with the. of the recieving neuron
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Physics, 21.06.2019 21:30, canyonrico05
One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?
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Physics, 22.06.2019 04:30, leilaford2003
Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j
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Physics, 22.06.2019 07:30, amakayla57
Automobile fuel efficiency is often measured in miles that the car can be driven per gallon of fuel (mpg). heavier cars tend to have lower fuel efficiencies (lower mpg ratings). which variable (weight or fuel efficiency) is most naturally considered the explanatory (predictor) variable in this context?
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To understand the formula for power radiated in the form of electromagnetic energy by an object at n...
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