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Question: Inflation. The purchasing power P (in dollars) of an annual amount of A dollars after t years of 5% inflation decays according to P = Ae-0.05t (Source: Viewpoints, VALIC)
(a) How long will it be before a pension of $60,000 per year has a purchasing power of $30,000?
(b) How much pension A would be needed so that the purchasing power P is $50,000 after 15 years?
here are 640 acres in a square mile. How many square meters are there in 7.20 acres
At low speed, air resistance is a force proportional to the velocity v of an object: F = -kv. Is this force conservative? What is the escape velocity (in m/s) from the Sun (M =2.0E30 kg) of an object that is a distance 9.1E7 km from the center of the..
While exercising, the following physiological changes occur for a certain person. Find which change has the strongest effect on blood flow
The end of the spring is next to the 20- mark on the ruler.If a 3.0- mass is now attached to the end of the spring, where will end of the spring line up with the ruler marks?
The normal range of hearing is about 20 to 20000 Hz. Assume that your hearing range is 27 to 19500 Hz. (Use 340 m/s as the speed of sound.) What is the greatest length of an organ pipe
At 19°C, a rod is exactly 18.07 cm long on a steel ruler. Both the rod and the ruler are placed in an oven at 250°C, What is the coefficient of thermal expansion for the material of which the rod is made
Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. Assume that the masses of the chains, pulleys, and ropes are negligible and the crate is rising with an acceleration of 3.3 m/s..
The gravitational force exerted on a baseball is 2.14 N down. Through what distance does it move before its release
A 82 person sits on a 3.5 chair. Each leg of the chair makes contact with the floor in a circle that is 1.5 in diameter. Find the pressure exerted on the floor by each leg of the chair
An empty rubber balloon has a mass of 0.0105 kg. The balloon is filled with helium at adensity of 0.181 kg/m3. what is the tension in the line
A uniform disc of radius 30 cm and mass 12 kg is pivoted so that it is free to rotate about an axis through its center. What is the acceleration of the disc
Nichrome wire of cross-sectional radius 0.791 mm is to be used inwinding a heating coil. estimate the length of wire you must use to wind the coil
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