Aparticle called the pi-meson is made from an up quark and an antidown quark. what is the charge of this particle?

Positive Pion, Negative Pion and Neutral Pion

Explanation:  

Pi-meson or also known as pion is one of any of the three (3) subatomic particles which characterizes of being unstable of its nature. The charged pions  

π+

and  

π−

decay with a mean lifetime of 26.033 nanoseconds or 2.6033×10−8 seconds, and the neutral pion  

π0

decays with a mean lifetime of 84 attoseconds (8.4×10−17 seconds).

a maximum–minimum thermometer. the scales are fahrenheit on the inside of the u and celsius on the outside. the current temperature is 23 degrees celsius, the maximum recorded is 25, and the minimum is 15, both read from the base of the small markers in each arm of the u tube. the bulbs are hidden by a plastic housing.

six's thermometer is a registering thermometer which can record the maximum and minimum temperatures reached over a period of time, for example 24 hours. it is used to record the extremes of temperature at a location, for instance in meteorology and horticulture. it was invented by a british scientist james six, born in canterbury, in 1780; [1] the same basic design remains in use.

it is also commonly known as a maximum–minimum, minimum–maximum, maxima–minima or minima–maxima thermometer, of which it is the earliest practical design.

the thermometer indicates the current temperature, and the highest and lowest temperatures since last reset.