Which describes how fast-moving particles assist in transferring thermal energy to a cup after hot tea is poured into it?

They replace slow-moving particles.
They collide with slow-moving particles.
They collide with other fast-moving particles.
They are replaced by slow-moving particles. Hey

How many times did thomas edison mess up the light bulb

Which of the following are guidelines to follow for obtaining accurate observations

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.