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In an experiment to estimate the acceleration due to gravity,a student drops a ball at a distance of 1m above the floor. His labpartner measures the time it takes to fall and obtains an estimateof 0.46s.
A. What do they estimate thhe acceleration due to gravity tobe?
B. Let s be the ball's position relative to the floor. Usingthe value of the acceleration due to gravity that they obtained,and assuming that the ball is released at t=0, determine s (in m)as a function of time.
Determine the magnitude of reaction at point A (in kips) of a 20' beam with 5kips at 4' of the beam and 2kips at 9' of the beam at 350lbs./ft.
A jet aircraft is flying in a standard atmosphere at an altitude of 4,000 m at 900 km/hr. The frontal intake area of the jet engine is 0.80 m2. The engine exhaust area is 0.56 m2. The temperature of the exhaust gas is 120°C.
The beam has a flange width b=8 in. If the maximum bending stress is not to exceed σallow=22 ksi, determine thegreatest weight of the machine that the beam can support. The center of gravity for the machine is at G, and the supports at Band C are smo..
it is found that the lifetimes of television tubes manufactured by a company have a normal distribution with mean of 2000 hours and standard deviation of 60 hours. if 10 tubes are selected at random
A present sum of $50,000 at an interest rate of 12% per year compounded quarterly is equivalant to how much money 8 years ago
salary 65000 per year, jane plans to retire in 25 years. Annual anticipated increaase is 3000 a year. she plans to deposite 5% of her yearly salery, into retirment fund that earns 7% intrest compounded daily.
If the system needs $5000 in operating and maintenance costs each year and has a salvage values of $25,000 at Year 10, what is the IRR of this system. If the company wants to earn at least 12% on all investments
Assume the components act independently and that they are equivalent in the sense that all 3 of them have an 85% success rate. Consider the random variable X as the number of components out of 3 that fail.
at one point on the highway, a 720 ft equal-tangent crest vertical curve exists. measurements show that at 3+40 stations from the PVC, the vertical curve offset is 3.5 ft. assess the adequacy of this existing curve in light of the reconstruction d..
Design a Portland cement concrete mix for a loading dock driveway slab. The concrete will be exposed to deicing chemicals and subjected to freezing and thawing in a moist condition. This is severe environmental exposure.
Carbon dioxide at 30 C and 320 kPa absolute pressure expands isothermally to an absolute pressure of 170 kPa. Determine the final density of the gas.
To provide a source of cooling on this hot Florida day, the piston is now pulled up until the air reaches a temperature of -100C. It can be assumed that the process is a polytropic one with.
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