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The rear end of an air conditioner dumps 1.2 * 10^7 J/hr of waste heat into the air outside a building. A fan assists in the removal of this heat. The fan draws in 15 m^3/min of air at a temperature of 33 Celsius and ejects this air after it has absorbed the waste heat. With what temperature does the air emerge?
A dog sitting 3.7m from a vertical mirror thinks its image is another dog. How far is the image from the dog
The electron gun in an old TV picture tube accelerates electrons between two parallel plates 1.2cm apart with a 28kV potential difference between them. What is the electric field strength between the plates
find the magnitude and direction of the resultant force A + B that is applied to the stump. Specify the direction with respect to due east.
A diving board length = 5.60 that weighs 250 is supported by two pillars. One pillar is at the left end of the diving board; the other is distance = 1.65 away. Determine the magnitude of the force exerted by the left pillar while an 80.0 diver sta..
a projectile is fired with an initial velocity of 35 m/s at an angle of 30 degrees above horizontal of a 30 feet tall building. find the velocity of the projectile at the ground
three resistors of 75, 50 , 100 ohms are connected to a 9 volt source. determine the power dissipated by the circuit
Standard mathematical constants and symbols (e.g. pi), you may only use the symbols shown in the figure and question description - Which of the following plots correctly represents the electric field intensit
The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50.0° angle with the ground. Explain how far up the ladder can an 870 N person climb before the ladder begins to slip?
A certain kind of glass has nblue = 1.560 for blue light and nred = 1.510 for red light. what is the angle between the red and blue light
A truck initially going 10m/s slams on the breaks. If the coefficient between the truck's tires and road is %u03BC=0.4, what is the minimum stopping distance of the truck
An ideal gas expands isothermally, performing 4.36 multiplied by 103 J of work in the process. Calculate the change in internal energy of the gas
Consider a square loop. It has an edge length L = 0.38 m and carries a current I = 7.74 A (runing clockwise). What is the magnitude of the torque on the loop
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