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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 4.8 kg dog stands on an 19 kg flatboat and is 6.1 m from the shore. he walks 2.2 m on the boat toward shore and then
An old-style TV set places 25 kV across two plates of a parallel plate capacitor. An electron is released very close to one plate, compute the speed of the electron when it exits the hole
the microwave radiation left over from the big bang explosion of the universe has an average energy density of 3.88
a circular loop in the plane of the paper lies in a 0.60t magnetic field pointing into the paper. if the loops diameter
So, if we connected the coil to a 110V, 60hz, voltage the coil acts as a series LR connection. What is the current in the coil? What is the power loss of the coil?
Benjamin applies a force F over a distance x to a ropeconnected to a set of pulleys. THis raises a block of weight W toheigh h above its initial level. what is benjamin's work input
a model rocket is fired vertically from rest. It has a net acceleration of 17.5 m/s2. how long after liftoff does the rocket return to the ground
An ambulance siren has a frequency of 440 Hz as heard by the driver. What frequency is heard by a pedestrian as the ambulance approaches him at a speed of 32.0 m/s
A pendulum clock has a period of 0.683 s on Earth. It is taken to another planet and found to have a period of 0.828 s, Find the gravitational field strength on the other planet.
A beryllium ion with a single electron (denoted Be3+) is in an excited state with radius the same as that of the ground state of hydrogen. Find how much energy in eV is needed to ionize the ion from this excited state
Two balls are moving in the same direction. Ball A has half the mass of ball B, and is moving at twice its speed. Which ball has greater kinetic energy
The rope wrapped around the outer diameter of the disk is pulled at a constant speed of 1.06 m/s. If the outer radius is 1.39 cm, how fast does the hanging mass rise
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