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A cannon fires a 9 lb projectile with an initial velocity of 60 m/s, at an angle of 15 degrees. Assuming that air resistance performs 2.50 kJ of work against the projectile, what is the maximum height of the projectile? What is the ratio of the maximum height obtained with neglecting air resistance to the maximum height attained with air resistance? NOTE: Assume that the zero point of the potential energy is level with the ground, and the height of the cannon above the ground is negligible.
The venturi flowmeter shown in the figure is used to measure the flow rate of water in a solar collector system. The flowmeter is inserted in a pipe with diameter 1.9 {rm cm}; at the venturi of flowmeter the diameter is reduced to 0.64 {rm cm}. Th..
A tire is filled with air at 15°C to a gauge pressure of210kPa. If the tire reaches a temperature of38°C, what fraction of the original air must be removed
A laboratory vacuum pump can reduce the pressure to 1.0 × 10^-7 Pa. If the volume of the chamber is 0.500m^3 and the temperature is 27°C
Three fire hoses are connected to a fire hydrant. Each hose has a radius of 0.014 m. Water enters the hydrant through an underground pipe of radius 0.096 m. Find the water speed in each hose
A generator connected to an RLC circuit has an rms voltage of 130V and an rms current of 33mA, what is the inductive reactance of the circuit
A commercial airliner is undergoing its initial ascent while the pilot maintains a cabin environment of T = 23 C, r = 0.35, and p = 880 hPa. At the 670 hPa level an exit door ruptures and cabin pressure rapidly decompresses. Will clouds form in the c..
A 40.0 kg box initially at rest is pushed 4.05 m along a rough, horizontal floor with a constant applied horizontal force of 145 N. find the work done by the applied force
A 5.0-, 0.732- wire is used to support two uniform 235- posts of equal length, What is the frequency of the sound this wire produces
q1 a deformation of cross-linked polymeric microgel particle carbopol is explained by the kelvin-voigt model a spring
a child throws a penny off of the eiffel tower h 324m with a downward velocity of magnitude v0 13 ms. find the speed
A quarterback throws a pass at an angle of 40° above the horizontal with an initial speed of 22.0 m/s. Determine the initial vertical velocity Voy
Two objects attract each other gravitationally with a force of 2.5 * 10^-10N when they are .25m apart. There total mass is 5.00kg. Find their individual masses
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