6. Extension: Click Reset. Without changing any of the sled masses or heights, record the potential and kinetic energy
of each sled and find the total energy before the collision.
Click Play and then Pause after the collision. Record the
potential and kinetic energy of each sled after the collision,
and find the total energy.

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law

The ph is the a. independent variable b. the dependent variable c. control group

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.