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A tree nursery has been experimenting with fertilizer to increase the growth of seedlings. A sample of 35 two- year-old pine trees are grown for three more years with a cake of fertilizer buried in the soil near the trees' roots. A second sample of 35 two-year-old pine trees are grown for three more years under identical conditions (soil, temperature, water) as the first group, but not fertilized. Tree growth is measured over the three- year period with the following results. keep track "in their head" while 216 of the accountants do so. Using a 1% level of significance, what does the business researcher find?
a boat carrying passengers weighs 1200lbs. if the boat is moving in a circular path with a radius of 40ft and a
Steam at 2.5 MPa and 400 C enters an adiabatic steam turbine with a low velocity and leaves with a velocity of 180 m/s at a pressure of 15 kPa and a quality of 90 percent. Assume steady state for the current problem state. Neglect potential energy.
The bottom of a large, 5-gallon plastic bucket bows when the bucket is filled with water. The deflection of the bottom surface, ?, is a function of the bucket diameter, D, the depth of water, h, the specific weight of the water, ?, the thickness of t..
the driver of a car which is initially at rest at the top a of the grade releases the brakesand coasts down the grade
Briefly describe the meaning of the term mechatronics both in terms of the 'systems approach' and the technology involved.
A four-stroke engine has a total displacement volume of 10L, 125mm bore and 16.3:1 compression ratio. The engine produces a maximum of 210 kW at 2100 RPM. The intake air is at 45 degrees C and 22.5 g/s of air flow into each cylinder. Calculate the vo..
1. what happens to the cutting and thrust force as tool rake angle and cutting speed are increased?2. how does the
a particle travels along a straight line with an acceleration of a 10-0.2s ms2 where s is measured in meters.
Is there a good calculation model for the material flow through a combine harvester related to the harvesting speed?
A novelty company was producing 220,000 items for $3.80 each. Theysold these for $6.00 each. Recently, the demand for the items has dropped to180,000 units at that $6.00 price. The company can reduce production to 180,000units. Each unit would cos..
A Crate containing 40 bricks, each of mass 1.3kg, is placed on a storage framework as shown. Calculate the reaction force in each of the supports A and B. Calculate the moment of the force exerted by the crate around support A and the moment of the f..
a piston-cylinder contains 1.2 kg of saturated water vapor at an initial temperature of t1 200 oc.
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