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According to a Wakefield Research survey of adult women, 50% of the women said that they had tried five of more diets in their lifetime. Suppose that this result is true for the current population of adult women. A random sample of 13 adult women is selected. Use the binomial probabilities table or technology to find the probability of the number of women in this sample of 13 who had tried 5 or more diets in their lifetime is
a) at most 7
b) 5 to 8
c) at least 7
A man holds a ladder horizontally at its center. Treating the ladder as a uniform rod of length 4.40 meter and mass 10.59 kilogram, find the torque the man must exert on the ladder
The average speed of the atoms in a 1.6 g sample of helium gas is 651 m/s. Estimate the thermal energy of the sample
Microwaves of wavelength 5.40 cm enter a long, narrow window in a building that is otherwise essentially opaque to the incoming waves. If the window is 34.5 cm wide, what is the distance from the central maximum to the first-order minimum along a wal..
Obtain the magnitude and direction of the force between two parallel wires 30 meter long and 6 centimeter apart, each carrying 30 Amp in the similar direction. Find the magnitude of the force between two parallel wires
Suppose the force acting on a tennis ball (mass 0.040 kg) points in the +x direction and is given by the graph of Fig. 7-30 as a function of time. a) Use a graphical method to estimate the total impulse given the ball.
A 10 kg balloon is filled with helium. Its volume is 200 cubic meters. How much gold can it carry in air? How much gold can it carry in water?
Andy, age 16, lacks self-discipline, fails to plan ahead, and is rapidly frustrated by challenging tasks. He is nervous and overly critical of others. Make use of the psychoanalytic, humanistic and social-cognitive perspectives to give three contr..
What is an angular speed about the center of mass
A uniform sphere with mass 60 kilogram is held with its center at the origin, Obtain the direction and magnitude of the net gravitational force due to these objects on a third uniform sphere with mass 0.50 kilogram located at the x = 4.0 meter, y =..
A proton accelerates from rest in a uniform electric field of 640N/C. At some later time, its speed is 1.20 x 106m/s. Find the magnitude of the acceleration of the proton
a resting homogenous sphere starts at a vertical height h 45.6m above the floor at the upper end of a wavy track. it
An inductor has a 56.6-? reactance when connected to a 60.0-Hz source. What is the maximum current in the inductor
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