Which of the following statements best explains why a book resting on a table is in equilibrium?

The net force equals zero there is no friction involved only gravity and a normal force acts on it

“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