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Rates versus counts. Customers returned 36 coats to Sears this holiday season, and only 12 to La Boutique Classique next door. Sears sold 1200 coats this season, while La Boutique sold 200.
(a) Sears had a greater number of coats returned. Why does this not show that Sears's coat customers were less satisfied than those of La Boutique?
(b) What is the rate of returns (percentage of coats returned) at each of the stores?
A 50.0 kilogram child stands at the rim of a merry-go-round of radius 2.15 meter, rotating with an angular speed of 2.70 rad/s. Find the child centripetal acceleration
What is the change in internal energy of a system that takes in 2.80 ? 106 J of heat, and does 4.50 ? 105 J of work while dissipating 9.00 ? 106 J of heat
A golf ball of mass 0.050 Kg is hit off the tee at a speed of 35 m/s. The golf club was in contact with the ball for. Find the average force exerted on the ball by the golf club
a balloonist records her altitude as 1208 meters. at the same time she measures the angle of depression of the landing
Three capacitors numbered 1, 2 & 3, each have the same value of capacitance, What is the effective total capacitance
A certain rain cloud at an altitude of 2 kilometer contains 3.20 x 107 kilogram of water vapor. Determine how long is this in years
a 70-kg bicyclist coasts down a hill that makes a 10degree angle with the horizontal at a speed of 10 ms.a if the drag
A brick is thrown upward from the top of a building at an angle of 45° to the horizontal and with an initial speed of 10 m/s. If the brick is in flight for 2.8 s, how tall is the building.
A softball of mass 0.220 kg that is moving with a speed of 5.5 m/s (in the positive direction) collides head-on and elastically with another ball initially at rest. Calculate the mass of the target ball
The terminals of a generator are connected to inductors. Inductor 1 is equal to 30.0 mH and the second inductor has a value of 60.0 mH. What is the value of the third inductor
A nuclear power plant draws 3.5 x 106 L/min of cooling water from the ocean. What is the water speed in each pipe
A spring is stretched between two posts. When a pulse is produced at one end of the spring, it makes 4 back-and-forth trips along the spring in 3.4 s. If the pulse has a propagation speed of 12 m/s, how far apart are the posts?
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