List and explain 4 factors you need to observe while stick welding to make a good "consistent" bead

The water behind Hoover Dam is 206m higher than the Colorado river below it. At what rate must water pass through the hydraulic turbines of this dam to produce 100 MW of power if the turbines are 100 percent efficient?

Identify the following statements as True or False? 1. Copper has a higher thermal conductivity than aluminum. 2. The density of copper is closer to that of aluminum than it is to iron. 3.

A desktop computer is to be cooled by a fan whose flow rate is 0.34 m3 / min. Determine the mass flow rate of air through the fan at an elevation of 3400 m where the air density is 0.7 kg/m3.

What is a thermal reservoir?

What is the relative % change in P if we double the absolute temperature of an ideal gas keeping mass and volume constant?

Which of the following should NOT be done to keep people from slipping on floors?

1. What types of fire can plain water be used on?

Pressurized steam at 400 K flows through a long, thin-walled pipe of 0.6-m diameter. The pipe is enclosed in a concrete (stone mix) casing that is of square cross section and 1.75 m on a side.

If traffic is approaching on your left and there is a child riding a bike to your right, you should: A. Move closer to oncoming traffic B. Move closer to the bicyclist C. Pull over until the road is clearer

Alloy parts were cast with a sand mold that took 160 secs for a cube-shaped casting to solidify. The cube was 50 mm on a side. (a) Determine the value of the Chvorinov's mold constant.