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A) As our bodies burn food as fuel, we radiate energy. Assume a person has a body surface area of 1.80 m2 and an emissivity of 0.620 (a reasonable value for someone wearing clothes). What is the power radiated by the person? (Normal body temperature is 37.0A?°C.) ___ W
B) A light bulb filament has an emissivity of 0.29. At a temperature of 2790 K, the filament radiates 55 W of power. What is the surface area of the filament? ___ m^2
There are many evaluates of the number of stars in the universe. evaluate how many stars there are in the universe. It perhaps goes without saying
after boarding an airpalne you carry your 14.0 kg suitcase down the aisle to your seat a distance of 24.0 m
A parallel-plate capacitor has circular plates of 9.27 cm radius and 1.79 mm separation. Calculate the capacitance in picofarads (pF)
Unpolarized light passes through 5 parallel ideal polarizing filters. What is the ratio of the initial intensity to the final intensity of the light
The drawing shows a sulfur dioxide molecule. It consists of twooxygen atoms and a sulfur atom. A sulfur atom is twice as massiveas an oxygen atom. Using this information and the data provided inthe drawing, find the coordinates of the center of ma..
Two small charged spheres, each has a mass of 8.00 x 10^-2 kg hang in equilibrium as shown. The length of each string is L = 0.120 m and the angle = 7.00 degrees. The charge on one sphere is q while on the other sphere is 4q. Decide the magnitude of ..
Which one of the following statements is correct concerning resonance in a system that can oscillate? Which one of the following statements is correct concerning theintensity, I, of a wave?
The emissivity of the human skin is 97.0 percent. Use 35.0 °C for the skin temperature and approximate the human body by a rectangular block with a height of 1.58 m, Calculate the power emitted by the human body
Engineers can determine properties of a structure that is modeled as damped spring oscillator-such as a bridge-by applying a driving force to it, What is the oscillator\'s damping constant? (kg/s)
a high speed cooling fan has a maximum angular speed of 15.0 rad/sec, calculate the angular acceleration when the device goes from idle speed to operational speed
A technician wraps wire around a tube of length 37 cm having a diameter of 8.2 cm. what is the self-induced emf in the solenoid
An ordinary glass is filled to the brim with351.0mL of water at 100°C. If the temperature decreased to29°C, how much water could be added to the glass
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