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A uniform rectangular block has mass M and sides 2a, 2b and 2c. Find the principal moments of inertia of the block (i) at its centre of mass, (ii) at the centre of a face of area 4ab.
Find the moment of inertia of the block (i) about a space diagonal, (ii) about a diagonal of a face of area 4ab.
An enclosure contains an array of circuit boards, 15 cm high and 20 cm long. The clearance between the tips of the components on the PCB and the back surface of the adjacent PCB is 0.3 cm. Each circuit board contains 75 square chips on one side, each..
a certain hydraulic system operates at 20.0 mpa. compute the percentage change in the volume of the oil in the system
Air at 300 K and a flow rate of 3 kg/h passes upward through a 30-mm tube, as shown in the sketch. A thin film of water, also at 300 K, slowly falls downward on the inner surface of the tube. Determine the convection mass transfer coefficient for ..
a solid circular rod with a diameter of d 18mm. the bar is ade of an aluminum alloy that has an elastic modulus of e
A cycle consisting of one constant pressure, one constant volume and two isentropic processes
A rocket has an empty weight of 500 lb and carries 300 lb of fuel. If the fuel is burned at the rate of 1.5 lb>s and ejected with a velocity of 4400 ft>s relative to the rocket, determine the maximum speed attained by the rocket starting from rest..
Hydrogen expands isentropically from 15 bar absolute and 340 k to 3 bar absolute in a steady flow process without heat transfer. 1) compute the final velocity if the initial velocity is negligible B) compute the flow rate if the final duct size is 10..
a gas over liquid lifting device has a 200 gallon reservior in which the pressure within the reservior is raised by 200
A voltage signal is produced by a transducer. The signal contains its strongest frequency component at 50 Hz (amplitude = 5.0 V), plus a weaker component at the second harmonic (100 Hz) with amplitude 2.0 V. In addition, there is noise at 60 Hz with..
The follower dwells for a sixteenth revolution and then returns 38 mm with parabolic motion in a quarter revolution, followed by a dwell for a sixteenth revolution of the cam. Use an abscissa 160 mm long.
a tennis racket hits a tennis ball with a force of where 1130 470 and is the time in milliseconds. the ball is in
An ideal gas is confined to one side of a rigid, insulated container divided into equal volumes by a partition. The other side is initially evacuated. The following data are known for initial state of the gas: p1 = 300 kPa, T1 = 380K and V1 = 0.025 m..
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