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An insulated frame wall of a house has an average thermal conductivity of 0.0318 Btu/h-ft^2-R degrees. The wall is 6 in thick and it has an area of 160 ft^2. The inside air temperature is 70 degrees F and the heat transfer coefficient for convection between the inside air and the wall is 1.5 Btu/h-ft^2-R degrees.
On the outside of the wall, the convection heat transfer coefficient is 6 Btu/h-ft^2-R degrees and the air temperature is -10 degrees F. Ignoring radiation, determine the rate of heat transfer through the wall at steady-state in Btu/h
a proton high above the equator moves straight away from the earth with a speed of 395 ms.a find the acceleration of
A canoe has the velocity of 0.420m/s southeast relative to the earth. The canoe is on a river that is flowing at 0.570m/s east relative to the earth.
While on a vacation to Kenya, you visit the port city of Mombassa on the Indian Ocean. Calculate the muzzle velocity necessary to hit a pirate ship 300 meters from the base of the fort
A roller coaster car is going over the top of a 15-m-radius circular rise. At the top of the hill, the passengers "feel light," with an apparent weight only 60% of their true weight. How fast is the coaster moving
a an electrostatic field line is a continuous curve. that is a field line cannot have sudden breaks. why not?b explain
An asteroid is discovered to have a tiny moon that orbits it in a circular path at a distance of 103 km and with a period of 47.0 h. The asteroid is roughly spherical (unusual for such a small body) with a radius of 24.9 km.
A monoenergetic beam of electrons is incident on a single slit of width 0.95 nm. A diffraction pattern is formed on a screen 24 cm from the slit. what is the energy of the incident electrons
A team of tornado-chasing meteorology graduate students is out in search of tornados. What frequency of sound do the students hear
a 60kg diver jumps off a platform that is 10m above the surface of the water with an initial upward velocity of 3ms.
a boat is traveling upstream in the positive direction of thexaxis at14kmh with respect to the water of a river. the
A 2.5 kilogram solid sphere (radius = 0.10 meter) is released from rest at the top of a ramp and allowed to roll without slipping. Evaluate its transitional kinetic energy
A load of steel of mass 6000 kg rest on a flat bet truck. It is held in place by metal brackets which can exert a maximum horizontal force of 8000 N. When the truck is traveling 20 m/s, what is the minimum stopping distance if the load is not to s..
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