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For what value of m will resonance occur for an unhampered spring-mass system with spring constant k at 3x10^5 N/m under a harmonic excitation f(t)=200sin(50t)?
Four kilograms of water initially at 200 degree Celsius and 0.5 MPa undergo an isothermal, internally reversible compression process to the saturated liquid state. Determine the work and heat transfer involved in the process (in kJ). Sketch the proce..
A closed rigid tank contains water in equilibrium at a temperature of 225 °C and a quality of 0.35 (35%). The mass of the liquid water present is 0.25 kg. What phases are present in the system? (Give justification) What is the mass of vapor that is p..
calculate the enthalpy change of the universe during the process. Cp=Cv = 4.18 kj/kgK
nylon strips are fused to glass plates. when the assembly is moderately heated the nylon will become soft while the
A four-stroke engine has a total displacement volume of 10L, 125mm bore and 16.3:1 compression ratio. The engine produces a maximum of 210 kW at 2100 RPM. The intake air is at 45 degrees C and 22.5 g/s of air flow into each cylinder. Calculate the vo..
a random sample of 25 resistors from a large production run has a sample mean value of 1001.5 ohms and a sample
a 5.70kg block hangs from a spring with spring constant 1900nm . the block is pulled down 6.80 cm from the equilibrium
consider an investment in a project having a first cost of 500000 operating and maintenance costs of 35000 per year a
the wheel of the slider-crank mechanism shown in the figure is rotating counterclockwise at a constant rate of 10 rads.
the turntable of a record player rotates initially at the rate 33 revmin and takes 14.07 s to come to rest. what is the
light bulbs are rated by their power consumption in watts w. electricity is sold in units of energy which is power
the twin ion engine tiestarfighter. the outer surfaces of the first and second death stars were made from quadanium
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