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1. The initial displacement in a 2-m-long string is given by 0.2 sin πx and released from rest. Calculate the maximum velocity in the string and state its location.
2. A string π m long is stretched until the wave speed is 40 m/s. It is given an initial velocity of 4 sin x from its equilibrium position. Determine the maximum displacement and state its location and when it occurs.
explain the factor, which inhibit the use of a very high resolution and a large number of colors for display in the case of raster scanning display devices.
a cylindrical stone mix concrete beam of diameter d 0.5 m initially at ti 20 c is exposed to hot gases at tinfin 500
temperature in state college pa on 31st december 2012 was 22 f. if the barometric pressure was 100 kpa and the humidity
a hollow sphere of aluminum with an inside radius of 0.01 m and an outside radius of 0.02 m has its outer surface
A current of 10 A rms flows when a single-phase circuit is placed across a 220-V rms source. The current lags the voltage by 60?. Find the power dissipated by the circuit and the power factor.
A cable drum for a crane is to rotate between 160 and 166 rpm. Design a gear drive for 25 hp in which the input pinion rotates at 925 rpm and the output rotates with the drum. The crane is expected to operate with a 50% duty cycle for 120 hours per w..
Verify that heating the wire may be treated as a lumped-capacity process, find the steady-state temperature of the wire and find how long it takes for the temperature of the wire to reach 100°C.
determine the work done in lifting a 250-lb refrigerator 4 ft vertically into a van. alternatively the refrigerator
Hydrogen is contained in a piston-cylinder device at 14.7 psia and 15 ft3. At this state, a linear spring (F 8 x) with a spring constant of 15,000 lbf/ft is touching the piston but exerts no force on it. The cross-sectional area of the piston is 3..
a steel thermal diffusivity 0.00001172 k43 cylinder 10 cm in diameter and 10 cm long is initially at 300degc. it is
a what is the approximate ductility el of a brass alloy that has a yield strength of 275 mpa? what is the tensile
1. Using the appropriate table, determine the change in specific entropy between the specified states, in Btu/ lb ? 8R.
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