An electric current is passed through a wire 1.5 mm in diameter with a length of 15 cm. The wire is submerged in water at atmospheric pressure, and the current is increased until the water boils. Under these conditions, the convection coefficient is 5000 W/m2-K, and the water temperature is 1000C. How much electric power must be supplied to the wire to maintain the wire surface at 1200C? Why might assuming negligible radiation be a reasonable assumption here?

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