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Repeat Prob. 2.83 for a left-handed pitcher whose release point is D.
Prob. 2.83
The manager of a baseball team plans to use a radar gun positioned at point A to measure the speed of pitches for a right-handed pitcher. If the person operating the radar gun measures a speed s when the baseball is one-third the distance from the release point at B to the catcher's glove at C, what is the actual speed of the pitch? Assume the pitch follows a straight-line path, and express your answer in terms of s: Note that the value s measured by the radar gun is the rate of change of the distance between point A and the ball.
air contained in a piston-cylinder assembly is initially at 350 k 150 kpa and a volume of 0.15 l. as the cylinder is
Create the basic, unconstrained geometry. Apply geometric constraints to lock the shape. Be sure to constrain one point on the sketch to the Origin Point.
Develop expressions for the droplet evaporation and cooling rates. Calcu- late the evaporation rate (kg/s) and cooling rate (K/s) when D = 3 mm, V = 7 m/s, T = 40°C, Too = 25°C, Tsur = 15°C, and oo = 0.60. The emissivity of water is sw = 0.96.
a gearbox is needed for an input shaft that rotates at 1000-1600 rpm and an output shaft that rotates at 75 plusmn1 and
A hydraulic jump at the base of a spillway of a dam is such that the depths upstream and downstream of the jump are 0.90 and 3.6 m, respectively (see Video V10.11). If the spillway is 10 m wide, what is the flowrate over the spillway?
A metal plate (k = 180 w/(m*k), p = 2800 kg/m^3, cp = 880 J/(kg*k)) with a thickness of 1 cm is being cooled by air at 5 degrees C with a convection heat transfer coefficient of 30 w/(m*k). If the initial temperature of the plate is 300 degrees C, de..
1. A long, circular aluminum rod is attached at one end to a heated wall and transfers heat by convection to a cold fluid. (a) If the diameter of the rod is tripled, by how much would the rate of heat removal change?
A cylindrical specimen of a brass alloy having a length of 60 mm (2.36 in.) must elongate only 10.8 mm (0.425 in.) when a tensile load of 50,000 N (11,240lbf) is applied.
A model of this pipeline is to be designed using a 2-in.-diameter pipe and water at 60°F as the working fluid. To maintain Reynolds number similarity between these two systems, what fluid velocity will be required in the model?
If the surface recession rate is known to be 0.1 mm/h, what is the rate at which mass is lost because of evaporation per unit surface area? What is the convection mass transfer coefficient?
A reversed Carnot engine provides 200kw of heating at 350K while operating between 350K and 280K. A carnot engine operating between 900 K and 300 K provides the power for heating. Determine the heat required for the Carnot engine.
Pulley B can be approximated as a uniform disk, and the mass of pulley C can be neglected. Determine the expression for the natural frequency of the system.
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