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Problem: What is the net power that a dog with surface area of 0.075 m2 radiates if his emissivity is 0.75, his skin temperature is 315 K, and he is in a room with a temperature of 290 K? The Stefan-Boltzmann constant is 5.67 x 10-8 W/(m2•K4).
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A uniform cylinder of radius 11.8 cm and mass 28.1 kg is mounted so as to rotate freely about a horizontal axis that is parallel to and 5.90 cm from the central longitudinal axis of the cylinder. calculate what is the angular speed of the cylinder
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A spherical steel ball bearing has a diameter of 2.54 cm at 22 degrees. what is the diameter as its termperature is raised at 88 degrees celcuis.
A four-turn circular wire coil of radius 0.565 m lies in a plane perpendicular to a uniform magnetic field of magnitude 0.340 T. what is the average induced emf in the wire during this time
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