What do scientists mean by the word theory? a. an uncertain idea. b. an obsolete idea c. an idea which allows you to try to predict future events d. an idea which cannot be checked. so although it may sound convincing, we need to keep an open mind

Option C.

Explanation:

A scientific theory or simply theory can be defined as an explanation which is well validated of some natural aspects based on factual set proved by repeated experimentation.

The facts when found correct after experimentation and can be unified results in the formation of theory which can further be applied to predict some of the future occurring phenomena or events in the nature or world.

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27