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Problem: A state representative wants to know how voters in his district feel about enacting a statewide smoking ban in all enclosed public places, including bars and restaurants, as well as several other current statewide issues. He mails a questionnaire addressing these issues to an SRS of 800 voters in his district. Of the 800 questionnaires mailed, 152 were returned. The sample is
(i) the 800 voters receiving the questionnaire.
(ii) the 152 voters returning the questionnaire.
(iii) all voters in his district.
A rocket is fired straight up and accelerates upward at 12 m/s2 for 18 seconds. The rocket then runs out of fuel and coasts still going up. Ignore any air resistance effects on the rocket and use -9.8 m/s2 for the local acceleration due to gravity..
In a single-slit diffraction pattern on a flat screen, the central bright fringe is 0.9 cm wide when the slit width is 4.60*10 -5 m. When the slit is replaced with a second slit, the wavelength of the light and the distance to the screen remaining ..
A model rocket is constructed with a motor that can provide a total impulse of 29.0 N·s. The mass of the rocket is 0.250 kg. What is the speed that this rocket achieves
a concave spherical mirror has a radius of curvature of magnitude 17.4 cm. a determine the object position for which
A tiger leaps horizontally from a 6.5 m high rock with a speed of 4.1 m/s. How far from the base of the rock will she land
A major-league pitcher can throw a baseball in excess of 44.6 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches catcher who is 18m away from the point of release.
A capacitor is formed from a hollow copper sphere of outer radius 45.4 cm and inner radius 36.3 cm. Compute the capacitance of the sphere in microfarads.
A cord is used to vertically lower an initially stationary block of mass M = 14 kg at a constant downward acceleration of g/7. find the work done by the cord's force on the block
A silver wire 86.4 cm long and 1.04 mm in diameter have a mass of 6.85 g. Discover the number of electrons in the wire. (Silver has an atomic number of 47; that is, there are 47 protons in the Silver atom. Silver's atomic mass is 107.8682.)
When a uniform electric field directed horizontally (from left to right) is introduced, equilibrium is eventually established with the mass hanging at an angle
A worker is to paint the walls of a square room 7.90 ft high and 18.0 ftalong each side. What surface area in square meters must she cover
A nuclear power plant generates 3000 MW of heat energy from nuclear reactions in the reactor's core. What is the plant's actual efficiency
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