Key concepts in science -see tasks attached Essay

Key concepts in science -see tasks attached - Essay Example Therefore, there was a need to have standard units of measurement to be used conventionally, especially that the world is becoming global. In a global village there is need of communication across-cultures for ease of communication in commerce and science, the driving engines of globalization. This means that there was need to harmonize units of measurement to enable coordination between the different disciplines in the world (Barry 797). This metric system is useful in several ways. It gives a standardized way of making measurements (using standardized units of measurement globally). It bring together various organization on the international scene to forge a common definitions for SI and set rules that govern writing and presentation of measurement in a universally accepted standard way. As already mentioned this development eases coordination between the several disciplines especially in commerce and science. Other advantages of the SI units include: global adoption (they have been adopted globally) and provides a universal framework for developments and research in measurements. In this system a power tong assembly in which a safety latch mechanism consists of a power portion equipped with two side connections of outlet, one that is linked to a control portion for controlling the cross section opening of the side connection of the tank. The power portion has a control element within the kind of a piston-shaped body value with equal magnitude surfaces on both subject end faces to the working medium pressure and with an opening running in the valve body movement direction. This opening has a conical expansion of its end of inlet flow. This blocks the direct link of the supply with tank return. Pressure and force interaction can be observed in the description of this system. In one type of control a lever valve within the unit is put