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At the end of the shock wave roller coaster ride, the 6000kg train of cars (including passengers) is slowed from a speed of 20m/s to a speed of 5m/s over a distance of 20 metres. Determine the braking force required to slow the train of cars by this ammount by using the following method; the laws of motion and d'alemberts principle.
To pour a concrete sidewalk takes 2 hours of preparation nd 3 hours of finishing. To pour a concrete patio takes 4 hours of preparation and 3 hours of finishing. ABC Concrete Company makes a profit of $450 on a sidewalks and $700 on a patio.
If investors invests $10,000 for one month in a company whose stock either goes up by 80% after a month with probability 1/2 or drops 60% with probability 1/2.
The percentage of households with a television tuned in to ad-supported cable increased linearly from 24.6% in 1995 to 42.5% in 2009. The percentage of households with a TV tuned into a major network decreased linearly from 47% in 1995 to 32% in 2..
Create 2 sets. Set A will be the list of the 5 items you personally need to buy the most (essential items). Set B will be the list of 5 items that you want to buy the most ( fun stuff).
In 1988, the speed of a central processing unit (CPU) of a personal computer was approximately 8 megahertz. In 1996, the speed of a personal computer's CPU was 200 megahertz. What percent increase in speed does this represent?
A particular company produces widgets. Each widget sells for $9, and the variable cost of producing each unit is 40% of the selling price. If the monthly fixed costs incurred by the company are $50,000, what is the break-even point?
Find the rate of change.
The formula r=2√5L can be used to approximate the speed r, in miles per hour, of a car that has left skid marks of length L, in feet. How far will a car skid at 30 mph?
Determine, using the limit comparison test, whether the series with terms (n^4 + 3n)/(5n^3 + 9) converges or diverges. Which series did you use for the limit comparison test.
A rectangular package to be sent by the U.S. Postal Service can have a maximum combined length and girth (perimeter of a cross section) of 180 inches.
Blending Coffees. The Coffee Counter charges $9.00 per pound for Kenyan French Roast coffee and $8.00 per pound for Sumatran coffee. How much of each type should be used to make a 20-lb blend that sells for $8.40 per pound?
The assembly line that produces an electronic component of a missile system has historically resulted in a 2% defective rate. A random sample of 50 components is drawn. What is the standard error of the proportion?
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