Determine the total surface area of the leaves in cm 2 and record the value. Stepâ 2 Calculate the rate of transpiration/surface area. If you are using a gas pressure sensor to collect data, you can express these rate values as kPa/min/cm 2, where kPa (kilopascal) is a unit of pressure.Record the rate.etermine the total surface area of the leaves in cm 2 and record the value. Stepâ 2 Calculate the rate of transpiration/surface area. If you are using a gas pressure sensor to collect data, you can express these rate values as kPa/min/cm 2, where kPa (kilopascal) is a unit of pressure.
That's why cellphones are much more sophisticatedâand work in a completely different way. A cellphone handset contains a radio transmitter, for sending radio signals onward from the phone, and a radio receiver, for receiving incoming signals from other phones.
Cell Phones Good or Bad. Cell phones are not just distracting kids, but also distancing them from their families. Many people tend to believe that cell phones are devices that are for keeping in touch with families, but really are just distancing them. For example many kids have their cell phones where ever they go; no matter where they are going or what they are doing. Kids and teens always have to be nose deep into their cell phones. Clearly, this is how cell phones are distancing kids from relationships and families, and is why this distance needs to be closed. First, cell phones seem to be very useful to kids at first, but when they have all of these things like Facebook and Instagram it seems like they are always on their phones. This is a problem because it is bad for the child and their relationship with others.