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Assume the skin temperature of a naked person is 35.1 °C when the person is standing inside a room whose temperature is 22.7°C. The skin area of the individual is 1.77 m 2.(a) Assuming the emissivity is 0.767, discover the net loss of radiant power from the body. (b) Decide the number of food Calories of energy (1 food Calorie = 4186 J) that is lost in 8.70 hours due to the net loss rate obtained in part (a). Metabolic conversion of food into energy replaces this loss.
A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, What are the magnitude and direction of the electric field
A 1.5-cm tall object is placed 0.50 m to the left of a diverging lens with a focal length of 0.20 m. What is the location of the final image with respect to the object
A 30cm string of linear density 7.0 g/m is stretched to a tension of 35N and fixed at both ends, Calculate the wavelengths and frequencies of the first fourharmonics
A thin, horizontal copper rod is 1.20 m long, What is the minimum current in the rod that can cause it to float in a horizontal magnetic field of 2.45 T
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. What is the amplitude A of each wave
Crossed magnetic and electric fields are established over a certain region. The magnetic field is .90 T vertically downward. Find what is the electrons speed
What is the ideal banking angle for a gentle turn of 1.80 km radius on a highway with a 110 km/h speed limit (about 68 mph), assuming everyone travels at the limit
a boy is laying on a sled wich is on an ice covered hillinclined at an anlge of 15 degrees if the boy and the sled have acombned mass of 54kg what is the force pulling them down the hill
a explain the important difference between classical and quantum particles. discuss the requirements that determine
A particular amplifying device supplies electrons in a manner such that the current passing out of the device, Determine the charge that passes out of the device if left on for 30 seconds
A person scuffing her feet on a wool rug on a dry day accumulates a net charge of -46 µC. How many excess electrons does she get, and by how much does her mass increase
Attached to each end of a thin steel rod of length 1.20 m and mass6.40 kg is a small ball of mass 1.06 kg.compute the retarding torque
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