What is the weight of a person whose mass at sea level is 72 kg ?

Which of the following would not be taken into consideration when describing the quality of a sound

What is the function of the commutator in a dc motor? a. to spin the magnet b. to change direct current into alternating current c. to change alternating current into direct current d. to spin the wire coil

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?