Total work done by external force
A 1.5 kg object initially at rest is raised to a height of 10 m by a force of 40 N. What is the velocity of the object at this height ? What time is needed for this motion ? What is the total work done by external force ?
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BC Company uses a job order cost accounting system. During the month of April, the following events occurred.Raw materials requisitioned: $25,800 as direct materials and $10,500 indirect materials.
A shell is fired at an angle of 20 degree above the horizontal at a velocity of 200 m/s a) what is the range? b) What is its velocity at highest point of the trajectory?
There are 10 steps leading up to the library entrance. You walk up the stairs taking 1 step at a time, 2 steps at a time, or some combination of 1 and 2 steps. How many ways are there to go up the steps?
Determine the maximum height h achieved, the total flight time t, the net horizontal displacement x from point A, and plot the entire trajectory.
1) Assume that adults have IQ scores that are normally distributed with a mean of 105 and a standard deviation of 15. Find P15, which is the IQ score separating the bottom 15% frm the top 85?
Gorham Manufacturing's sales slumped badly in 2010. For the first time in its history, it operated at a loss. The company's income statement showed the following results from selling 600,000.
This machine would cost $3,800. Polaski Company has no assurance that the retail chain will purchase additional units in the future.
An engineer is going to redesign an ejection seat for an airplane. The seat was designed by pilots weighing between 150 lb and 191 lb. The new population of pilots has normally distributed weights with a mean of 157 lb and a standard deviation of 3
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