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The coefficients of friction are µs = 0.40 and µk = 0.30 between all surfaces of contact. Determine the smallest force P required to start the 30-kg block moving if cable AB
(a) is attached as shown,
(b) is removed.
an airplane has a mass of 30mg and its engines develop a total thrust of 50kn during take-off. if the drag d exerted
a proton and an electron form two corners of an equilateral triangle of side length 3.0 multiplied by 10-6 m. what is
Calculating Test Mach Number, The temperature in a reservoir of a supersonic tunnel is 519 deg.R. In the test section, the flow velocity is 1385 ft/s.
Explain what is meant by ‘inversion of control' in application frameworks. Explain why this approach could cause problems if you integrated two separate systems that were originally created using the same application framework.
Determine an expression for the number of cycles to failure, Nf if the initial crack size is a0. State any assumptions you make.
a well-insulated chamber is divided in two parts my a thin membrane. the left side with a volume of 2000 cm3 is filled
a 70kg rectangular door measures 1.2m wide by 2.3m tall. it closes automatically using two hinges with torsional
Using static equilibrium calculations, calculate how far from the fulcrum the tweezers must be held to avoid damaging the sliver.
An aluminium bar is subjected to uniaxial tensile loading. If the lateral strain (perpendicular to the load direction) is measured to be -0.00025, determine the axial stress required to induce this strain (round to the nearest ksi).
A 100L rigid tank contains nitrogen (N2) at 900K, 3 MPa. The tank is now coole to 100K. What are the work and heat transfer for this process?
A shell-and-tube heat exchanger is used to cool a flow of steam using a stream of cooling water. The steam enters the heat exchanger at 0.1 bar and a quality of 91% (state 1), and exits as a saturated liquid at the same pressure (state 2). The mass f..
consider the interface between atmospheric air and a body of water both at 17 degc.a. what are the mole and mass
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