(a) the battery voltage is 385 v.
(0) state the amount of energy transferred when one coulomb of charge passes through a potential
difference of 385 v.
(ii) show that, when a charge of 18 c passes through the battery, the total amount of energy
transferred to the battery is about 70 mj.
(iii) during the charging process, energy is also transferred to the charging station from the mains
supply.
explain why the amount of energy transferred from the mains supply is more than 70 mj.

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

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.