Sam uses a flame to heat a metal rod. He measures the temperature and finds that over time, temperature increases first closest to the flame and then farther away from the flame. How can Sam explain what is happening on the molecular level as the flame heats the metal rod through conduction?

What is the magnitude of the resultant vector round your answer to the nearest tenth

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?

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.