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The inner and outer glasses of a 4-ft x 4-ft double-pane window are at 60°F and 48°F, respectively. If the 0.25-in. space between the two glasses is filled with still air, determine the rate of heat transfer through the window.
a thin rod, of length L = 0.80 m and negligible mass that can pivot about one end to rotate in a vertical circle. what is the change in the gravitational potential energy of the ball-Earth system
A 2.0 gram bullet leaves the barrel of a gun at a speed of 325 m/s. Calculate the average force exerted by the expanding gases on the bullet as it moves the length of the 41 cm long barrel
A toy train rolls around a horizontal 1.2-m-diameter track. The coefficient of rolling friction is 0.10. What is the magnitude of the train's angular acceleration
A rock weighing 7404 N rock with a volume of 29 L is completely submerged in mercury. The density of mercury is 13.6 kg/L. Decide the density of the rock. Decide the buoyant force on the rock.
Two parallel wires with centers separated by 8.7mm each carry 11A in the opposite direction. Find the magnitude of the force per unit length on each wire
A commuter train blows its horn as it passes a passenger platformat a constant speed of 40.0 m/s. What is the frequency observed bya person on the platform
two antennas located at points a and b are broadcasting radio waves of frequency 95.0 mhz perfectly in phase with each
define How long are the skid marks. calculate the time it takes the sled to go 21 m down the slope.
Protons in cosmic rays have been observed with kinetic energies as large 2.10x108 eV. How fast are these protons moving
A uniform 1.5T magnetic field passes perpendicular through the plane of a wire loop 0.3m in area. What flux passes through the loop
a 2340 kg satellite used in a cellular telephone network is in a circular orbit at a height of 770km above the surface
An 9.0 kg object is moving 5m/s in the positive x direction has a one dimensional collisions with a 3.0 kg object moving 4.0 m/s in the opposite direction. What is the total kintetic energy of the two-mass system
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