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A batter hits the baseball A with an initial velocity of v0 = 103 ft/sec directly toward fielder B at an angle of 34° to the horizontal; the initial position of the ball is 2.0 ft above ground level. Fielder B requires 0.43 sec to judge where the ball should be caught and begins moving to that position with constant speed. Because of great experience, fielder B chooses his running speed so that he arrives at the “catch position” simultaneously with the baseball. The catch position is the field location at which the ball altitude is 7.3 ft. determine the velocity of the ball relative to the fielder at the instant the catch is made.
5ft3 of ammonia is initially at 100 psi and a specific volume of 0.024ft3lbm is heated or cooled to make this an
an electric heater in the form of a horizontal disk of 57 mm diameter is used to heat the bottom of a tank filled with
design a combinational circcuit with three inputs x y and z and three outputs a b and c. when the binary input is 0 1 2
Air with free-stream velocity of 2m/s passes over a flat plate of length 5m and width 1m. This time, the temperature of the convecting air is Tinfinity = 350K and its relative humidity is 15%. The flat plate is at Ts = 300K and its surface is wetted,..
a fire clay brick rho 2000 kgm2 k 1.0 wm-k cp 800 jkg-k of dimensions 5 cm by 10 cm by 15 cm is removed from a kiln
The refrigerant R-410a is contained in a piston-cylinder device, as shown in the figure, where the volume is 13 L when the piston hits the stops. The initial state of the fluid is -30 °C, 150 kPa, with a volume of 10 L. The entire system is brought i..
temperature in state college pa on 31st december 2012 was 22 f. if the barometric pressure was 100 kpa and the humidity
A knowing that the normal stress magnitude in each link is not to exceed 24 ksi, the shearing stress in pin F is not to exceed 15 ksi, and the deflection of point A is not to exceed .08 in.
a venture necked-down section in a pipe develops a low pressure that can aspire fluid upward from a reservoir. derive
an object whose mass is 50kg is suspended at rest a height of 68 meters above the surface of the earth. the object is
As shown, a 3.1-lb ball is suspended at point D inside a box with dimensions w=9.50 ft, d=6.50 ft, and h=4.50 ft. The ball is held in place by three cables anchored at points A,B, and C on the surface of the box.
A steel plate of 950 kg accelerates from rest with 3 m/s^2 for a period of 10 s. What force (N) is needed and what is the final velocity ( in m/s and ft/s) ?
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