A point charge Q is placed on the x axis at x = 2.0 m. A second point charge, − Q, is placed at x = 3.0 m. If Q = 40 μC, what is the magnitude of the electrostatic force on a 30- μC charge placed at the origin?

i think the answer would be b

graph slopes whilst gas cools, then it is flat whilst conensation to liquid happens, the coolong liquid then graphs as a slope when it solidifies graph is flat

latent heat

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

i really dont know but i will try okay.

so i think u would just add all them up and get your answer..