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 uC , what is the magnitude of the electrostatic force on a 30 - uC charge placed at the origin ?

“other instruments such as gravimeters and magnetometers are also used in the search for petroleum. extracting crude oil normally starts with drilling wells into an underground reservoir. when an oil well has been tapped, a geologist (known on the rig as the "mudlogger") will note its presence. “ this is what i found on google i hope it

The reflection of the candle in the concave mirror formed an upside-down virtual image that is smaller than the candle.in other words. the answer is the third option, c