Work-energy theorem to find the final speed of the object
A 190 kg object is moving 15 m/s. If a net work of 12500 J is done on the object to increase its speed, then use the Work-Energy Theorem to find the final speed of the object.
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A long cylinder carries a charge density which is proportional to the distance rom the axis: p = kr, for some constant K. Find the electric field inside and outside of the cylinder?
A 3 m x 3 m x 2.4 m room losses heat through the walls at a rate of 520 W. Determine the final temperature of the room after 2 hrs with the electric baseboard heater drawing 120 V and 4.5 A. The initial temperature of the room is 15 °C
The data below are the temperatures on randomly chosen days during a summer class and the number of absences on those days. Find the standard error of estimate, se, given that y = 0.449x - 30.27.
A Carnot Engine operates between two reservoirs maintained at 400 degrees celcius(673.15K) and T2, respectively. The heat transfer from the high temperature reservoir is 25kW.
A researcher wishes to test the effectiveness of a flu vaccination. 150 people are vaccinated, 180 people are vaccinated with a placebo, and 100 people are not vaccinated. The number in each group who later caught the flu was recorded. The results
The pressure of the air in the cylinder is 140kPa. Model the air as an ideal gas. Find the final temperature of the air in the cylinder.
In a pipe 0.3 m in diameter, 0.3 m3/s of water is pumped up a hill. On a hilltop (elevation 48 m), the line reduces to 0.2 m diameter. If the pump maintains a pressure of 690 Kpa at elevation 21 m, calculate the pressure in the pipe on the hilltop
The distribution of sample means will be normal regardless of the shape of the data in the population (i.e. calorie content of all frozen dinners of this type produced during this particular period).
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