The author uses the example of the flameless candle to illustrate that 1. engineering maks products safer, 2. elements of nature are easy to replicate 3. there are many elements within a system, 4. products of engineering often become household objects

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

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