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Problem: Sampling stuffed envelopes. A large retailer prepares its customers' monthly credit card bills using an automatic machine that folds the bills, stuffs them into envelopes, and seals the envelopes for mailing.
Required:
1. Are the envelopes completely sealed? Inspectors choose 40 envelopes from the 1000 stuffed each hour for visual inspection.
2. What is the population for this sample survey? What is the sample?
An Atwoods machine is made with masses M1=100g, M2= 120g, and pulley mass of 100g. What is the percent error in acceleration
When a certain air-filled parallel-plate capacitor is connected across a battery, it acquires a charge of magnitude 196 ?C on each plate. What is the dielectric constant of the dielectric slab
A hot-air balloon achieves its buoyant lift with heating the air inside the balloon, which makes it less dense than the air outside. Suppose the volume of a balloon is 1600 m3 and the needed lift is 2200 N (rough estimate of the weight of the equipme..
The corroded contacts in a lightbulb socket have 8.3Ω total resistance. How much actual power is dissipated by a 110 W (120 V) lightbulb screwed into this socket? Express your answer using two significant figures.
Two particles having equal signed charges of 12nc are placedat two of the vertices of an equilateral triangle, What is the magnitude of the electrical field at the third vertex of the triangle
At what distance from a single slit of width 0.155 mm should a screen be placed so that the width of the Fraunhofer central diffraction maximum is 15.5 mm (100 times the slit width), using light of wavelength 476 nm? Discover the angle locating the s..
An object moves in a circular path at a constant speed. What is the direction of the net force acting on the object?
Two masses undergo a front-to-back collision. The mass m has aninitial velocity 2v0, and the mass 2m has an initial velocity v0.After the collision, they stick together, forming a compound system. What is the final kinetic energy of the compound ..
A train starts from rest and accelerates at a rate of 1.70m/sfor 13.8s it runs at constant speed for 69.9s andslows down at a rate of 3.48m/s until it stops, find total distance covered
The two blocks in the figure are connected by a mass less rope that passes over a pulley. The pulley is 17cm in diameter and has a mass of 1.9kg. how long does it take the 4.0 kg block to reach the floor
A woman at an airport retrieves her 25.5 kg suitcase and begins to roll it on the floor by pulling on the strap. What is the magnitude of the acceleration of the suitcase
A jogger travels a route that has two parts. The first is involves a displacement that points due east and the second a displacement of 2.90 km due south. The resultant displacement + has a magnitude of 3.90 km.
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