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As shown in figure,find that at what distance body A will retain a velocity of 3m/s when starts from rest.assume coefficient of friction as 0.2 for block and surface and pulleye are frictionless
The sides of a triangle measuring 40 m, 32 m, and 16 m increase at the rates of 2 m/s, 5 m/s, and 3 m/s, respectively. How fast is the area of the triangle changing?
a. 138.42 m^2/s
b. 113.69 m/s
c. 127.33 m^2/s
d. 113.69 m^2/s
Design an interior floor panel of 5.0m x 5.0m (effective dimensions) of an RC framed building. LL = 3kPa and floor finish = 1 kPa. Use M20 and Fe415
As shown in figure, find that at what distance body A will attain a velocity of 3 m/s when starts from rest. Assume coefficient of friction as 0.2 for block and surface and pulleys are frictionless and weightless
The hoist in a mine shaft has a mass of 5 tons. The vertical distance of the mine shaft is 500 m. the hoist is moving at a constant velocity upwards in the mine shaft. a. Determine the work done of the hoist. b. If it takes the hoist 5 minutes to reach the surface, then calculate the power.
Air is heated in a 4cm×4cm sheet metal duct with a uniform surface
heat flux of 590 W/m2. The mean velocity is 3.2 m/s. The sheet
metal has an average roughness 0.05 mm. If the air enters at 20 ºC
and leaves at a mean temperature of 120 ºC, determine the following
(ignore entrance effects):
[a] The required length of the duct.
[b] The maximum surface temperature.
The pressure of a gas in piston-cylinder varies with volume according to PV=C. The initial pressure is 350KPa and initial volume is 0.03 cubic meter, and the final volume is 0.07 cubic meter. Determine the work done in this expansion process. Express your answer in kiloJoules.
A particle moves on the path of 20 ft radius so that its arc distance from a fixed point on the path is given by s= 4³-10t where s is in feet and t in seconds. Compute the total acceleration at the end of 2 sec.
A non-inverting amplifier is working on 120 mV with input resistance of 300 and feedback resistance of 1500. Calculate its gain and design the circuit by showing all parameters.
A series RL circuit consists of resistor with a resistance of 50.0 Ω and an inductor with an
inductance of 200 µH. The instantaneous voltage across the resistor (VR) is given as
VR = ( 10.5 V) cos (2000π t)
a) Derive an equation for the instantaneous current that flows in the circuit. (2 marks)
b) Calculate the reactance of the circuit. (1 mark)
c) Derive an equation for the instantaneous voltage across the inductor, VL. (3 marks)
d) Sketch a phasor diagram of the circuit. (1 mark)
e) Determine the equation for the instantaneous voltage of the ac source, Vs. (3 marks)
