Resistance of the resistors
Assuming the resistance of the resistors to be normally distributed with mean 100 ohms and standard deviation 2 ohms, what percentage of resistors will have resistance between 98 ohms to 102 ohms.
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Assume the mean height of soldiers to be 68.22 inches with a variance of 10.8 (inches). How many soldiers in a regiment of 1000 would you expect to be over 6 feet tall?
At a lumberjack competition an axe with a mass of 1.25 kg is thrown at a target with a speed of 43 m/s. When it hits the target, it penetrates to a depth of 0.047 m. (a) What was the average force exerted by the target on the axe?
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A 0.075 kg toy airplane is tied to the ceiling with a string. When the airplane's motor is started, it moves with a constant speed of 1.33 m/s in a horizontal circle of radius 0.47 m, as illustrated in Figure 6-40. Find the angle the string makes
The formation constant for Cu(CN)43- is 2.0 x1030. What is the standard free energy change for the process (in kJ/mol)? (Express your answer to 3 significant figures.)
A simple random sample of size 400 was taken from the population of all manufacturing establishment in a certain stat: 64 establishments in the sample had 100 employees or more. Choose the proper interpretation of the 90% confidence interval for t
A car travels at a constant speed around a circular track whose radius is 2.0 km. The car goes once around the track in 360 s. What is the magnitude of the centripetal acceleration of the car?
If the helix descends 8 ft for every one revolution, determine the speed of the car in t=4 s. Also, how far has the car descended in this time? Neglect friction and the size of the car.
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