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A Thermo pane window consists of two glass panes, all 0.32 cm thick, with a sealed layer of air of thickness 0.7 cm among them. If the inside surface temperature is 18? Cand the outside surface temperature is 1?C,
Decide the rate of energy transfer during 2.5 m2 of the window. The thermal conductivity of the glass is 0.84 W/m/?C and of the trapped air 0.0234 W/m/?C. Answer in units of W.
What is the rate of energy transfer during 2.5 m2 of a single 0.7cm thick pane of glass? Answer in units of kW.
Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 410 N and F2 = 376 N. (Assume up and to the right as positive directions.), What is the resultant of these two forces
In the late nineteenth century one type of artillery was a heavy metal gun that had a mass of roughly 1 x103 kg and could fire an 8 kg shell. what is the speed of the recoiling gun
A solid wood door 1.00m wide and 2.00 m high is hinged along one side and has a total mass of 44.0 kg. Find the final angular speed of the door
the earth rotates once per day about an axis passing through the north and south poles an axis that is perpendicular to
On a soup production line, 100L of concentrated broth(c=1cal/g C) at 90 C will be mixed wth 200L of water. What should be the temperature of the water before mixing
A constant horizontal force F of magnitude 20 N is applied to awheel of mass 20 kg and radius 0.5 m. The wheel rolls withoutslipping on the horizontal surface, and the acceleration of its center of mass has magnitude 0.5 m/s^2.
A concave spherical mirror has a radius of 11.0cm. Anobjeect of height 1.5cm is placed 15.0cm from the mirrir. Where is the image and How tall is the image
A 1.2 kg brick is held a distance of 2 m above a manhole and then dropped. What is the change in potential energy
Four copper wires of equal length are connected in series. The cross sectional areas are 1 cm2, 2 cm2, 3 cm2, and 5 cm2, What is the voltage across the 2 cm2 wire in units of volt
question1an ideal gas expands at a constant pressure of 6.00 105 pa from a volume of 1.00 m3 to a volume of 4.00 m3 and
A ray of light, traveling in the air, strikes the surface of mineral oil at an angle of 27.9 degrees with the normal to the surface. What is the angle of refraction
A laser emits 1.00 x10^20 photons/sec. The laser has a wavelength of 473 nm. What is the power output of the laser
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