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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 football quaterback runs 15.0 m staright down the playing field in 2.50s. what are the average velocities for the three intervals
What is the angular speed of a rotating wheel that has a moment of inertia of 0.330 kg.m^2 and a rotational kinetic energy of 2.75J
When a potential difference of 12 is applied to a wire 6.7 long and 0.31 in diameter the result is an electric current of 2.2. calculate the resistivity of the wire
assume a perfectly elastic collision between a 916g bat and a 145 g baseball. Find the bat's speed before and after the collision
A wheel (radius 0.6 m) is rolling on a horizontal surface with a center of mass acceleration of 0.7 m/s2. If the force applied to the center of the wheel is 27.036 N and the wheel has a mass of 10.409 kg, what is the friction force acting between the..
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.20×106N, What is the total work done by the two tugboats on the supertanker
Recalling that an object smaller than the wavelength illuminating it cannot be "seen", what is the minimum kinetic energy of electrons needed in an electron microscope in order to "see" an atoms whose diameter is 0.1 nm, about the size of a silicon a..
charges of 4.0 micro coulomb and -6.0 micro coulomb are placed at two corners of an equilateral triangle with sides of
A woman on a bicycle traveling at 10m/s on a horizontal road stops pedaling as she starts up a hill inclined at 3.0 degrees to the horizontal
Imagine the flow of water through a pipe which has a radius of 10 cm. what is the approximate flow velocity at the center of the pipe
Three beads are placed along a thin rod. The first bead has a mass m1=28g placed at a distance d1= 0.7 cm from the left of the rod. Calculate the numeric value of location of the center of mass relative to the middle bead in cm
Suppose you were to wrap the planet Mars in aluminum foil and place a charge Q on it, What is the capacitance of Mars in this case
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