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The position of a particle is given by r =3.0tf +2.0t2]+ 5.0k , where t is in seconds and the coefficients have the proper units for r( t) to be in meters.
a) Find (t) of the particle, and
b) find the magnitude and direction of (t) at t=1.0s.
Fluid mechanics ch.9: A supertanker has length, breath, and draught (fully loaded) dimensions of 325m, 48m, and19m, respectively. In open seas the tanker normally operates at a speed of 115 kt (1 kt=0.515m/s).
A carpenter uses a hammer to strike a nail. Approximate the hammer's weight of 1.8lbs, as being concentrated at the head, and assume that at impact the head is traveling in the -j direction
Water leaves a turbine at 18.5 fps and enters a tailrace having an average velocity of 1.5 fps. What is the submerged discharge head loss? By what percentage is this loss reduced if the provision of a draft tube increases the discharge flow area to s..
A piston-cylinder device contains 0.85 kg R-134a at 263K. The piston is free to move and has a mass of 12 kg and diameter of 25 cm. The atmospheric pressure is 98 kPa. Heat is added to the cylinder until the R-134 temperature = 10 o C.
How long will it take for the water to flow out of the 3 mdiameter tank with an initial height of 2.75 m. Note that theorifice has a diameter of 3cm
A 2.25 Adisk spins within an oil-filled enclosure,having 2.4-mm clearance from flatsurfaces each side of the disk. The disk surface extends from radius 12 to 86 mm.What torque is required to drive the disk at 660 rpm if the oil's absoluteviscosity is..
Biomass is increasingly used as a fuel to produce power and heat. A sugarcane-? processing mill is powered by a biomass power plant with 140 MW of electricity and with 60 MW of heat in the form of steam for sugar extraction from the cane.
Two identical pool balls of 57.15 mm diameter may move freely on a pool table. Ball B is at rest and ball A has an initial velocity v=v0i. (a) knowing that b=50 mm and e=0.7, determine the velocity of each ball after impact.
If the diameters are 2 cm and 4 cm, respectively, calculate the fluid viscosity if the torque on the inner cylinder is measured to be 0.0026 N*m.
For each of the two cases below, determine the water pressure, pressure head, elevation head, and total head at points A, B, and C. Please solve the problem using: (a) the upper reservoir level as the datum
A pipe line of 1.25 m diameter has a circular gate at its end. This gate can be operated around its horizontal diameter. If the pipe is flowing full with velocity almost equal to zero, calculate the turning moment required to operate the gate
Determine the specifications (unstretched length and springconstant k) for the elastic cord to be used at a bungee-jumpingfacility. Participants are to jump from a platform 150 ft above the ground. When they rebound, they must avoid an obstacle that ..
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