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Problem:
Customer satisfaction. A department store mails a customer satisfaction survey to people who make credit card purchases at the store. This month, 45,000 people made credit card purchases. Surveys are mailed to 1000 of these people, chosen at random, and 137 people return the survey form.
Required:
(i) What is the population of interest for this survey?
(ii) What is the sample? From what group is information actually obtained?
an ideal gas of molar mass m is located in a uniform gravitational field whose free fall acceleration is g. a find the
Twenty-five individuals were subjected to strength tests and then were asked to perform a weight-lifting test in which weight was dynamically lifted overhead. The data are given here.
A 1.50m long ramp is inclined at 20 degree to the horizontal. A solid ball is released from rest at the top of the ramp. Find its translational acceleration
The filament of an incandandescent light bulb is a very thin solid cylindrical shape, with a total length of 450 mm and a diameter of 0.45 mm. What is the peak wavelength emitted by this light bulb
If the pion is made to travel at very high speed relative to a laboratory, its average lifetime is measured in the laboratory to be4.20×10-7s. Calculate the speed of the pion expressed as a fraction ofc.
In a museum devoted to the history of photography, you are setting up a projection system to view some historical 4.0 inch x 5.0 inch slides. How far from the lens should you put the slide
A snowmobile climbs a hill at velocity v-up. The slope of the hill is a 2 ft rise for every 70 ft of distance. The resistive force of the snow is equal to 4.12 percent of the weight of the snowmobile. How fast will the snowmobile move downhill, assum..
The Humber Bridge in England has the world's longest single span, 1410 m. Compute the change in length of the steel deck of the span when the temperature increases from -5.0 degree C to 18.0 degree C.
Finding An Object With Its Speed And Time
a small ball is launched with a speed of 40 m/s and an angle of 30 degrees toward the building shown. determine the time it takes for the ball to reach the building
Which of the following forces does the most work?
A bicycle break pad is pushed against the moving rim of the wheel with a force of 80 N and the dynamic coefficient of friction is 2.2, What is the shear modulus of the rubber that the pad is made from
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