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Problem: A glass window 0.35 cm thick measures 79 cm by 36 cm. How much heat flows through this window per minute if the inside and outside temperatures differ by 15° C?
_____KJ/min
I need help to solve the above problem.
A few decades ago, trucks had chains hanging down from ther back trailers that contacted the ground. This was extremely important in the case of gasoline trucks! Now trucks are made with conducting tires.
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water
A 1.5m long stick with a mass of 0.3 kg is pivoted on a hinge at one end and held horizontally with a spring by spring constant 10N/m attached at the other end. What is the frequency, f (in Hz), of small up and down oscillations of the stick?
A box with a total surface area of 1.11 m2 and a wall thickness of 3.1 cm is made of an insulating material. A 12.9 W electric heater inside the box maintains the inside temperature at 16.3C above the outside temperature. Find the thermal conductivit..
A block that has a mass of 0.06 kg and a block that has a mass of 2.19 kg are attached to the ends of a rope. A student holds the 2.19-kg block and lets the 0.06-kg block hang below it, then he lets go. What is the tension in the rope while the block..
There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 hz that can travelup to 10 km. The intensity level of these sounds can reach98 dB, measured a distance of 4.5 m from the source.
A certain peculiar spring is found not to conform to Hooke's Law. Compute the work done in stretching the spring from x = 0.5 m to x = 1.0 m
A cargo plane is flying horizontally at an altitude of 20.0 km with a speed of 888 km/h when a large crate falls out of the rear loading ramp. How far is the crate from the aircraft when the crate hits the ground
At the surface of a freshwater lake the pressure is 106 kPa. Determine the pressure increase in going 34.9 meter below the surface
The field just outside a 2.43cm radius metal ball is 350 N/C and points toward the ball. what charge resides on the ball. final answer must be in C
In outer space a rock of mass 12 kg is acted on by a constant net force ‹ 30, ?14, 49 › N during a 3 s time interval. What was the rock's velocity at the beginning of the time interval
A particle initially has a speed of 0.31c. At what speed does its momentum increase
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