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A straight, rectangular cross-sectional fin [k=200w/mdegrees celcius] 3.0 mm thick and 7.5 cm long protrudes from a flat surface.The base of the fin is maintained at 300 celcius and the ambient temperature is 50 celcius. The convection coefficient on all surfaces is h= 10 W/m^2-C. Calculate the heat loss from each fin per unit depth of material
A 62 kg student is standing atop a spring in an elevator that is accelerating upward at 3.3 m/s^2, By how much is the spring compressed
When each crosses the finish line, is the translational kinetic energy of the spool greater than, less than, or equal to that of the block? Energy analysis of the block-and-spool problem
A skier is gliding along at 4.4m/s on horizontal, frictionless snow. He suddenly starts down a 10 degree incline. His speed at the bottom is 16m/s. How long does it take him to reach the bottom
A potential dissimilarity of 2.60 V will be applied to a 29.00 m length of 18-gauge iron wire (diameter = 0.0400 in). Compute the current. Compute the magnitude of the current density. Compute the magnitude of the electric field within the wire.
Find out the magnitude of the electric field at a point P on the y-axis 0.529 m from the origin. The value of the Coulomb constant is 8.99 × 109 N • m2/C2.
An early method of measuring the speed of light makes use of a rotating slotted wheel. What is the constant angular speed of the wheel
A wire carries current to the north (towards the top of the computer screen) through a magnetic field. what is the direction of the magnetic force on the current-carrying wire
A 62-kg astronaut is in space, far from any objects that would exert a significant gravitational force on him. He would like to move toward his spaceship, but his jet pack is not functioning. He throws a 720-g socket wrench with a velocity of 5 m/..
A conservative force, f(x) = -2x+3x4 is applied to a mass m (f in Newtons and x in meters). what is the change in the potential energy of mass
A man pulls a toboggan for a distance of 40.0 meter along the snow with a rope directed 20.0 degree above the snow. Find how much work is done if the same tension is directed parallel to the snow
A converging lens with a focal length of 11.4 centimeter forms a virtual image 8.05 millimeter tall, 16.8 centimeter to the right of the lens. Obtain what the position of the object
A string wound around a cylinder of 10 cm radius has has a 150 gram mass attatched. When released, the mass accelerates at 500 cm/second. what is the angular acceleration
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