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1. Histogram or stemplot? Explain why we prefer a histogram to a stemplot for describing the returns on 1528 common stocks.
2. Automobile fuel economy. Government regulations require automakers to give the city and highway gas mileages for each model of car. Table 11.2 gives the highway mileages (miles per gallon) for 31 model year 2008 sedans. Make a stemplot of the highway gas mileages of these cars. What can you say about the overall shape of the distribution? Where is the center (the value such that half the cars have better gas mileage and half have worse gas mileage)? Three of these cars are subject to the "gas guzzler tax" because of their low gas mileage. Which three?
A microscope has an objective lens of focal length 6.00 mm. The objective forms an image16.5 cm from the lens. The focal length of the eyepiece is 2.80 cm and the distance among the lenses is 19.3 cm.
Two polarizers are oriented at 48° to each other and polarized light incident on them. what was the initial polarization direction of the incident light
Batman (mass = 95.9 kg) jumps straight down from a bridge into a boat (mass = 683 kg) in which a criminal is fleeing. The velocity of the boat is initially +8.67 m/s. What is the velocity of the boat after Batman lands in it?
A defibrillator consists of a 15.3-µF capacitor that is charged to 8.4 kV. What is the average power delivered to the tissues?
The position of the particle as a function of time expressed by the equation position vector r (t) = (at2 + bt) i + (ct + d) j with a, b, c, and d are constants that have the appropriate dimension. Determine the particle displacement vector between t..
A 24 GeV proton in cosmic radiation moves in Earth's magnetic field B, with a velocity v perpendicular to B, What is the radius of the proton's curved path in that region
The Earth is showered with particles from space known as muons. What will be the radius of the muon's resulting orbit
a wire carrying a current is shaped in the form of a circular loop of radius 3.0 mm. if the magnetic field strength at
A radioactive nuclide produces 2880 decays per minute at one time, and 1.52 hr later produces 738 decays per minute. What is the half-life of the nuclide
An electron has a velocity of 6.0 ? 106 m/s in the positive x direction at a point where the magnetic field has the components Bx = 3.0 T, What is the magnitude of the acceleration of the electron
A 180g block hangs from a spring with spring constant 13N/m . At t=0s the block is 13cm below the equilibrium point, What is the block's oscillation frequency
A wire rests on the y axis and has 3 A of current flowing in the y direction. Compute the force (in i j k notation) on a 10 cm section of the wire if it sits in a magnetic field described by a) B= 0.28 T i, b) B = -0.68 T j, and c) B= -0.5 T i + 0.6 ..
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