What is physical measurement? in Science​

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above