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a) Which measurement of the velocity of the ball do you think is the more dependable the projectile method or the pendulum method? why?
b)Which measurement contributes to large amount of error? how would you improve on these measurements if you repeated this lab exercise?
c)Where does the kinetic energy of the ball go when it collides with the pendulum besides into kinetic energy of the pendulum?
Congress banned the production of the speedy dry cleaning company's dry cleaning fluid in 2000. Speedy is using a new cleaning fluid. The new dry cleaning fluid has one-sixth the volatility of the former dry cleaning fluid.
A waste heat source is available at 400°C. A heat engine operates using heat from this source. It rejects heat to the surroundings at 38°C. The power from the engine runs an air conditioner to keep the air inside a building at 25°C
For an unknown alloy the stress at which plastic deformation begins is 400MPa and the modulus of elasticity is 120GPa. If the original specimen length is 76 mm, what is the max length to which it may be stretched without causing plastic deformatio..
Car B is driving straight toward the point O at a constant speed v. An observer, located at A, tracts the car with a radar gun. What is the speed |r(dot)B/A| that the observer at A records
In strong winds the force can be quite large. Suppose that a hole is introduced in the building’s roof at point A to make pi equal to the surface pressure there. At what angle ? should hole A be placed to make the net wind force zero?
A sample of moist soil has a volume of 40.5 cc mass weight of 59.2 gms. After drying it has a mass weight of 48.3 grams. The specific gravity of the solids are 2.68. Compute the degree of saturation, water content and void ratio.
For the profile shown, the initial ground water table is 5 ft belowthe surface. A proposed dewatering project will cause the watertable to drop 10 ft from the original level. Consolidation tests performed on clay samples produced the following result..
A horizontal curve on a single lane highway has its pc at station 124+10 and its pi at station 131+40.the curve has a super elevation of 0.06 and its designed for 70 mi/hr.what is the station of the pt" is pending
The center of gravity of the crane is 10 ft from the pin, and the crane weighs 200 lb. What is the tension in the horizontal cable.
Determine the maximum force (P) that can safely applied to a steel tee section (20 feet in length) with the point loads at 5 feet from each end. Fixed at one end, pin at the other.
Matt is building a stand made out of mud bricks ( ultimatecompressive strength approximately 100 psi and density 250lbs/cubit foot) in the shape of a tent
The following data apply to a closed link traverse. Compute preliminary azimuths, adjust them. and calculate departures and latitudes, misclosures in departure and latitude, and traverse relative precision.
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