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The following are body mass index (BMI) scores measured in 12 patients who are free of diabetes and participating in a study of risk factors for obesity. Body mass index is measured as the ratio of weight in kilograms to height in meters squared.
25 27 31 33 26 28 38 41 24 32 35 40
Calculate the mean BMI (show answer to two decimal places)
What is the standard deviation of the mean BMI in question #1? Calculate to two decimal places.
100uC of charge flows through a conductor in 5ms. What is the current through the conductor
An astronaut arrives at a new planet, and gets out his simple device to decide the gravitational acceleration there. Prior to this arrival, he noted that the radius of the planet was 7040 km. If his 0.400-m-long pendulum has a period of 1.0 s, what i..
A recovery vehicle is towing a broken down lorry, of mass 42 tonne, up an incline of 1 in 10. Both vehicles start from rest and accelerate constantly up the incline at 0.1m/s2. If the resistance to motion (not the gravitational component) is:-
a small electric immersion heater is used to heat 100 g of water for a cup of herbal tea. the heater is labeled 200
A spectral line of a distance galaxy is shifted from 500nm to 750nm. What is the speed of the galaxy? Use Hubble's formula to approximate the distance of the galaxy.
An interstellar spaceship is leaving Earth at a speed of %u03B2 = 0.548 for a deep space expedition. What is the geometric mean of the down-shifted and the up-shifted frequency
A 225 gram arrow is shot vertically into the air from an initial height of 1.40 meter above the ground with an initial speed of 18.6 m/s. obtain the amount of mechanical energy dissipated by air friction
An object weighing 330 N in air isimmersed in water after being tied to a string connected to abalance. The scale now reads 255 N. Find the density of the object
An electron acquires 5.95×10?16J of kinetic energy when it is accelerated by an electric field from plate A to plate B
A steam power plant has, at the turbine entrance, saturated vapor with a pressure of 40 bar. The turbine exit is at 50 degrees C. The pump entrance is at 50 degrees C as well, and its exit is saturated liquid at 40 bar. The pump and turbine are is..
A coil is formed by winding 280 turns of insulated 14 gauge copper wire (diameter = 1.6 mm) in a single layer on a cylindrical form of radius 13 cm. What is the resistance of the coil? The resistivity of copper is 1.69 10-8 ·m. Neglect the thickness ..
If a heat engine absorbs 940.0 J of heat from the hot reservoir and exhausts 330.0 J of heat to the cold reservoir, what was the work done by the engine
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