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(a). Modulus of elasticity and modulus of rigidity are important parameters to measure mechanical properties of materials. With the aid of drawings, explain these parameters and give some examples of how they vary for different materials.
(b). In a tensile test conducted on a sample of the material, a full range of stress-strain curve can be measured until the sample breaks, describe such a curve and explain properly for key terminologies such as elastic range, plastic range, yield stress, ultimate tensile stress etc.
(c). A circular metal column is to support a load of 860 Tonnes and it must not compress more than 0.2 mm. The modulus of elasticity is 220 Gpa, the column is 2.1 m long. Calculate the cross section area and the diameter.
(d). A punch must cut a hole 46 mm diameter in a sheet of steel 2.8 mm thick. The ultimate shear stress is 60 Mpa. Determine the minimum force that is required to cut the hole.
According to uncertainity stationary orbits are accepted or not?please give reason Ans) According to uncertainity stationary orbits are not accepted because according to station
Illustrates the formula of Rayleigh-jeans law? RAYLEIGH-JEANS LAW The energy distribution into the thermal spectrum is specified by given formula as follows: E λ = 8Πk
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Sample of ethane gas (molar mass & 30.1 g/mol) occupies 1.2 x 10 -2 m3 at 46°C and 2.4 x 105 Pa. How many moles of ethane are present in the sample? What is the mass of the
what is the physical significance of damping constent
Maxwell's equations (J.C. Maxwell; 1864): Four elegant equations that describe classical electromagnetism in its entire splendor are following.
short article...
What is damped and undamped eletromagnetic waves Ans) A damped wave is a wave whose amplitude of oscillation decreases with time, eventually going to zero.
Neglecting friction, what is the child''s gravitational potential energy at the top of the swing? What is the child''s kinetic energy at the top of the swing?
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