INPUT ARTICLE: Article: This can be expressed as the ratio of grams of water vapor to the number of kilograms of dry air. This is called the "actual mixing" ratio. This data can be obtained online as measured from instruments such as a microwave water radiometer. Measuring the water vapor in the air is not something that can be done with household items. This is the point at which the air would be saturated with moisture and is called the saturation mixing ratio. The amount of water vapor the air can hold is dependent upon the temperature of the air. Tables are available online that will tell you the capacity of water vapor at a specific temperature.  The higher the temperature, the higher the water vapor capacity. To determine how much water vapor the air can hold at a certain temperature, reference the table at https://brownell.co.uk/datasheets/basics_humidity.pdf. This simple calculation produces the relative humidity. Thus, if the air currently holds 20 grams of water per kilogram of dry air and can hold 40 grams of water per kilogram of dry air, the relative humidity would be 20/40, or 50 percent.

SUMMARY: Determine how much water vapor is in the air. Determine how much water vapor the air can hold. Divide the actual mixing ratio by the saturation mixing ratio.


INPUT ARTICLE: Article: Mexican citizens must have a TN visa to enter the US and therefore, must apply at a US Consulate or Embassy abroad.  It is recommended that Mexican citizens apply in Mexico since officers in those consulates are more aware of the TN visa regulations and procedures. Appointments can be made online through the department of state website or by phone.  To be issued an appointment, complete and submit Form DS-160 online.  The application fee is $190 and can be paid online.

SUMMARY: Make an appointment with a US Consulate or Embassy. Pay the application fee and complete the application form.


INPUT ARTICLE: Article: If your parents are not okay with you having a girlfriend, you should not lie to them. Communicate with them and maybe you can find a compromise. Doing something your parents do not allow make it even more difficult if you’re caught. Take any opportunity to build their trust. Go to bed on time and do your chores when you’re told. Also, improving your grades shows that you are focused and understand your priorities. Getting your parent to support you will make things much easier down the road. For example, they can give you rides when you want to meet her or extra allowance if you want to buy her a small present to show her you like her. Respectful behavior is important to provide an example of how you will treat their daughter. A confident young man who does well in school and has aspirations for the future will keep most parents from stopping you from going out with their daughter unless you ever prove dishonest or impolite. If she says she is unsure or not allowed to date in middle school, it's not the end of the world. As much as you want to go out with her, it's much more important that you establish respect early on. Do not suggest that she lie to her parents or goes behind their back. That will only get her into trouble and make you seem selfish for disregarding what her parents want. You can suggest that you have a non-date at her house under her parents' supervision if her parents initially say no. Show them that you respect them and will follow their rules.

SUMMARY: Be sure that your parents are aware of what you are doing. Show your parents that you are responsible. Be polite when meeting her parents. Respect her and her family's views.


INPUT ARTICLE: Article: Each post should be 3 feet (0.91 m) away from each other—start by marking the first post location with chalk at one end of the wall. Now, move in 3 foot (0.91 m) increments along the line until you reach the end.  Use a taut string and stakes or a snapped chalk line to help you create a straight line. If you need to extend your wall with another post to create the final 3 feet (0.91 m) then do so. Space your posts 16 to 18 inches (41 to 46 cm) apart for load-bearing walls, which are walls that support something aside from their own weight such as a roof. Start by using a D-handle shovel to loosen the dirt along each side of the trench. Once it's loose enough, dig out the middle with a trench shovel. Continue loosening and digging into the soil with each of your shovels.  Call your local utility services number at least 3 to 4 days before digging to ensure it's legal and won't damage underground structures, such as power, sewer, water, or gas lines. Consider renting heavy equipment to dig your trench. Saw through large roots with a reciprocating saw or using the tip of your trench shovel. Use a steel bar to loosen rocks. for your posts. Thrust your shovel into the soil and jiggle it forward and backward and side to side. Once the soil is loosened, start digging down into the ground. Grip the middle of the shovel's handle with your non-dominant hand and the top of the handle with your dominant hand.  Use a steel bar to knock rocks loose. Remove large sections of loose soil with a clamshell digger. Saw through large roots by thrusting your shovel down into them or using a reciprocating saw.

SUMMARY:
Mark your post hole locations on the ground with chalk. Dig a 12 inch (30 cm) deep trench between your post locations. Dig 18 inch (46 cm) deep holes