22. a football punter accelerates a 0.5 kg football from rest to a speed of 9.0 m/s in 0.30 s. what
constant force does the punter exert on the ball?

“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 rocks expand when there hot/warm  and contract when they are cold.

It is increased due to the doppler effect. (apex)