Athree-point transverse bending test is conducted on a cylindrical specimen of aluminum oxide having a reported flexural strength of 390 mpa (56,600 psi). if the specimen radius is 2.5 mm (0.10 in.) and the support point separation distance is 30 mm (1.2 predict whether or not you would expect the specimen to fracture when a load of 620 n (140 lbf) is applied. calculate the value of flexural strength for this test.

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented

At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.