Van, whose mass is 52 kg, has a work done of 1800 J while walking from the bottom of a roller coaster loop
during her school's physics field trip to the local
amusement park. Determine Van's acceleration at this
location if he covers 36 m distance in doing the task.

Asystematic approach to problem solving is called a (an)

A58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward third base with a velocity of 38.0 m/s.

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.