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A sampling of 20 inpatients in hospital x's intensive care unit revealed an average length of stay of 3.5 days with a standard deviation of 0.5 days. Construct a 0.95% confidence interval to show what values the true population length of stay falls between
Use the simulation in the cannon interactive in this section to answer the following questions. (a) Does cannonball's horizontal velocity change as it moves through the air? (b) Does its vertical velocity change? (c) If you enhance the cannonball's h..
A farm tractor tows a 3700 kilogram trailer up an 18o incline with a steady speed of 3.2 m/s. Determine what force does the tractor exert on the trailer
Assume both A1 and A2 are at atmospheric pressure, A1>>A2, h=1.0 meter, and A2 is a 2.0 cm diameter hole. At what rate is the water tank emptying
A 640-g hollow ball 19cm in diameter is suspended by a wire and is undergoing torsional oscillations at a frequency of 0.78 Hz
A thin circular hoop of mass 1.00 kg and radius 2.00 m is rotating round an axis during its center a perpendicular to its plane. It is slowing down at the rate of 7.00 rad/s2. What is the net torque acting on the hoop?
Show that the incident and scattered electric fields form a standing wave normal to the surface and a propagating wave parallel to the surface. What are the periods of the standing and propagating waves if the incident wavelength of the light is l..
A swimmer runs horizontally off a diving board with a speed of 3.58 m/s and hits the water a horizontal distance of 1.79 m from the end of the board. How high above the water was diving board.
A typical depth for the human mouth is about 7.80 cm , although this number can vary. (Check it against your own mouth.). We can model the mouth as an organ pipe that is open at the back of the throat. What are the wavelengths of the first four ha..
An alien spacecraft is flying overhead at a great distance as you stand in your backyard. You see its searchlight blink on for 0.190. The first officer on the spacecraft measures that the searchlight is on for 12.0.
A tank of gasoline (n = 1.40) is open to the air (n = 1.00). A thin film of liquid floats on the gasoline and has a refractive index that is between 1.00 and 1.40. What is the refractive index of the film
A 0.5-cm-wide diffraction grating has 1315 slits. What are the angles (in degrees) of the first two diffraction orders
A capacitor is charged to a potential of 12.0 V and is then connected to a voltmeter having an internal resistance of 3.50M%u03A9. What is the time constant of the circuit
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