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(a) What is the rate of energy loss in watts per square meter through a glass window 1.6 mm thick if the outside temperature is -8.3°F and the inside temperature is +84°F?
(b) A storm window having the same thickness of glass is installed parallel to the first window, with an air gap of 6.7 cm between the two windows. What now is the rate of energy loss if conduction is the only important energy-loss mechanism? (The thermal conductivity of window glass is 1.0 W/m·K, and of air is 0.026 W/m·K.)
An interstate highway has been built through a neighborhood in a city. In the afternoon, What is the average late-night sound level
If two adjacentnatural frequencies of an organ pipe are determined to be 475 Hzand 575 Hz calculate the frequency and length of the pipe
A compact disk on a CD player rotates clockwise. The disk completes one revolution in 0.234 s, what is the angular velocity of the disk and its speed at 1.42 cm from the axis of rotation
Two small metallic spheres, each of mass 0.20 g, are suspended as pendulums by light strings from a common point, what is the magnitude of the charge on each sphere
The bacterium Escherichia Coli (E. coli) is a single celled organism that lives in the gut of healthy humans and animals, For the segment BC in the bacteriums trajectory, calculate the x and y components of its displacement
A ball is thrown directly downward with an initial speed of 8.60 m/s, After what time interval does it strike the ground
A 8.0 kg block oscillates with an amplitude of 0.070 m on a light spring constant k= 13 N/m. What is the maximun value of the block's velocity
A 2-meter long prism with square cross-section of side 0.1m is made of stainless steel with a thermal conductivity k=14.9W/m degrees C. Determine the temperature distribution inside the prism
Three moles of an ideal monatomic gas are at a temperature of 393 K. Then 2568 J of heat is added to the gas, and 631 J of work is done on it. What is the final temperature of the gas
An electron has an initial velocity of 5.00 106 m/s in a uniform 3.00 105 N/C strength electric field. What is the direction of the electric field
High-speed stroboscopic photographs show that the head of a 250-g golf club is traveling at 52 m/s just before it strikes a 46-g golf ball at rest on a tee. Find the speed of the golf ball just after impact
Air molecules in a warm room
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