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The skin temperature of a nude person is 34 oC and the surroundings are at 20 oC. The emissivity of skin is 0.900 and the surface area of the person is 1.40 m2.
(a) What is the rate at which energy radiates from the person? (b) What is the net energy loss from the body in 2 min by radiation?
You have the task of measuring an unknown temperature using a constant-volume gas thermometer. hat is that temperature on the Celsius scale to the nearest degree
On a frozen pond, a 9 kg sled is given a kick that imparts to it an initial speed of v0 = 2.5 m/s. find the distance the sled moves before coming to rest
While helping an astronomy professor, you find a binary star system in which the two stars are in circular orbits about the system's center of mass. From their color and brightness, you decide that each star has the same mass as our Sun.
What is the magnetic flux through the coil? The magnetic field at the coil is increased steadily to 0.100 T over a time interval of 0.5 s. What is the magnitude of the emf induced in the coil during the time interval?
If the electric flux through a circular area is 5.0 Nm 2/C, what is the electric flux during a circle of double the diameter assuming the orientations of the circles are the same and the electric field is uniform?
A 3 centimeter radius 120-turn coil of 12.5 ohm resistance rotates about a diameter in a uniform magnetic field of 0.13 T. find how much charge would it record when the coil is flipped
You are given a force versus distance graph and the initial velocity at the origin. How do you calculate velocity at any point in time on the graph
The maximum tension that a 0.5m string can tolerate is 14N. A 2.5kg ball is attracted to the string being whirled in a vertical circle. What is the maximum speed the ball can have at the top of the circle.
An object with a mass of m = 1.10 kg is connected to a spring with a spring constant of 9.13 N/m. The object is displaced to the right of the equilibrum position by a distance of x(0) = 26.0 cm, What is the maximum speed reached by the object
There has recently been considerable interest in one-dimensional electrical conductors. In this problem, you are asked to calculate some free-electron properties for a system of length L containing N electrons. Thus, there are n =N/L electrons per..
draw an accurate sketch of the vector addition of the two known forces. use a protractor to draw the forces in the
A motorcycle has a constant speed of 30.0 m/s as it passes over the top of a hill whoseradius of curvature is 118 m. Find the magnitude of the normal force that acts on the cycle
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