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The amount of heat per second conducted from the blood capillaries beneath the skin to the surface is 240 J/s. The energyis transferred a distance of 2.0 x 10^-3 m through a body whosesurface area is 1.6 m^2. Assuming that the thermal conductivity is that of body fat (k = 0.20 J/(s·m·degrees C)),determine the temperature difference between the capillaries and the surface of the skin.a. 9.2 degrees Cb. 5.4 degrees Cc. 1.5 degrees Cd. 6.9 degrees Ce. 3.7 degrees C
A tungsten target is struck by electrons that have been accelerated from rest through a 76.1-kV potential difference. Find the shortest wavelength of the radiation emitted
Two identical small insulating balls are suspended by separate0.25m threads that are attached to a common point on the ceiling. determine the charge on each ball
A soccer ball with mass 0.242 kg is initially at rest and is kicked at an angle of 29.0° with respect to the horizontal. What is the impulse received by the soccer ball
A Van de Graa? generator has a potential di?erence of 2.35 MV between the belt and the outer shell. What minimum power is needed to drive the moving belt
a 11 g bullet is fired into a 12 kg wood block that is at rest on a wood table. the block with the bullet imbedded
to be safe the engineers making the ride want to be sure the normal force does not exceed 1.9 times each persons weight
A ball is rolling down a ramp. When it passes a particular point, you determine that the ball is traveling at an angular speed of 12.0 rad/s, Determine the magnitude of the balls angular acceleration
he rate P at which a star radiates energy in the form of electromagnetic waves can be calculated using the equation, Calculate a numerical value for the intensity of sunlight
An electric motor turns a flywheel through a drive belt that joins a pulley on the motor and a pulley that is rigidly attached to the flywheel, Find the tension in the lower (slack) segment of the belt
A long circular pipe with outside radius R = 3.00 cm carries a (uniformly distributed) current i = 13.8 mA into the page. A wire runs parallel to the pipe at a distance of 3.00R from center to center.
An electron is suspended at a distance of 1.48 cm above a uniform line of charge. What is the linear charge density of the line of charge
A Yo-yo has a rotational inertia of 952 g·cm2 and a mass of 107 g. Its axle radius is 2.27 mm, and its string is 117 cm long. What is the magnitude of its linear acceleration
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