Why is a switch used in an electric circuit?
a. it is used to increase the power.
b. it is used to open and close the circuit.
c. it is used to decrease the magnetism.

Which must be kept in mind when determining if an explanation is correct? check all that apply. which must be kept in mind when determining if an explanation is correct? check all that apply.

Which of these parts of the membrane large moecules pass through it ?

Suppose you use three different scale to weigh a bag of organges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of organges is 2.153 lb. which of the following best decribes these results?