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Problem: Sampling gravestones. The local genealogical society in Coles County, Illinois, has compiled records on all 55,914 gravestones in cemeteries in the county for the years 1825 to 1985. Historians plan to use these records to learn about African Americans in Coles County's history. They first choose an SRS of 395 records to check their accuracy by visiting the actual gravestones.
Required:
(i) How would you label the 55,914 records?
(ii) Use Table B, beginning at line 120, to choose the first 5 records for the SRS.
Assume it takes 8.00 min to fill a 25.0-gal gasoline tank. (1 U.S. gal = 231 in.3) (a) Calculate the rate at which the tank is filled in gallons per second. (Please provide numerical answer in gal/s)
An ideal gas occupies a volume of 3.0 cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container
A sinusoidal wave on a string is described by the wave function y = 0.19 sin (0.90x ? 62t) where x and y are in meters and t is in seconds. The mass per unit length of this string is 12.0 g/m. Determine speed of the wave. m/s. Determine wavelength of..
The coils of a motor's rotor have resistance of 2.0 Ω. When the motor runs at full speed, powered by 115V linevoltage it draws a current of 9A. What is the back electromagnetic field (emf) in this motor under those conditions? If the motor is preve..
Two ideal inductors (0.124 H, 0.433 H) are connected in series to an AC voltage source with amplitude 5.17 V and frequency 113 Hz. What is the peak current that flows in the circuit
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During an etiquette class, you walk slowly and steadily at 0.20 m/s for 2.5 meter with a 0.75 kilogram book balanced on top of your head. Find how much work does your head do on the book
determine the change in the internal energy of a system that absorbs 327 cal of thermal energy while doing 750 j of
A house painter is standing on a uniform, horizontal platform thatis held in equilibrium by two cables attached to supports on the roof. how large is the force exerted by the right-hand cable
The highest barrier that a projectile can clear is 14.5 m, when the projectile is launched at an angle of 13.0° above the horizontal. What is the projectile's launch speed
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A step-down transformer (turns ratio = 1:8) is used with an electric train to reduce the voltage from the wall receptacle to a value needed to operate the train. What is the current in the primary coil
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