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In an investigation of whiplash resulting from rearend collision, sudden rotation of the head is modeled by using a homogeneous solid sphere of mass m and radius r pivoted about a tangent axis (at the neck) to represent the head. If the axis at O is given a constant acceleration a with the head initially at rest, determine expressions for the initial angular acceleration of the head and its angular velocity ? as a function of the angle ? of rotation. Assume that the neck is relaxed so that no moment is applied to the head at O.
a boiler receives a constant flow of 5000 kgh liquid water at 50 bar and 20 degrees c and it heats the flow such that
Steam at 550 lbf/in.2, 700oF enters a turbine operating at steady state and exits at 1 lbf/in.2. The turbine produces 500 hp. For the turbine, heat transfer is negligible as are kinetic and potential energy effects.
you decide to do a demonstration on a rooftop that requires water. there isnt a handy faucet so you put a barrel of
Sketch a dislocation loop in the form of a circle and specify the Burgers vector. Show portions of the dislocation that are screw-like and those that are edge-like in nature. Considering the energy per unit length of the screw dislocation being somew..
A bullet is fired vertically at a latitude of 50 degrees N with a muzzle speed of 1000m/s. Neglecting air friction, determine the landing point of the bullet.
What is the total rate of heat transfer to the air? What is the pressure drop associated with the airflow?
a frictionless piston-cylinder device fitted with stops above the piston contains 1.2 kg of air at 200degc and 700 kpa.
a steam power plant utilizing the rankine cycle has the following particulars- steam pressure and temperature at inlet
Methane is completely burned with 20% excess air, with 30% of the carbon going to CO. What is the partial pressure of the CO in the stack gas if the barometer reads 740 mm Hg, the temperature of the stack gas is 300°F.
the open water tank is resting on a frictionless plane. the capped orifice on the side has a 4-cm diameter exit pipe
Beryllium has an HCP unit cell for which the ratio of the lattice parameters c/a is 1.568. If the radius of the Be atom is 0.1143 nm, (a) determine the unit cell volume, and (b) calculate the theoretical density of Be.
how do you calculate the strain of a solid cantilever bending beam fixed at one end if given curvature of 0.0243 m and
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