The direction of an electric current is by convention the direction in which a positive charge would move. Thus, the current in the external circuit is directed away from the positive terminal and toward the negative terminal of the battery. Electrons would actually move through the wires in the opposite direction.
When an object is moving with uniform circular motion, the centripetal acceleration of the object d. is directed toward the center of motion.
We know that 20 m/s N is a vector quantity because N in the expression signifies the direction
<h3>What is a vector quantity?</h3>
This is a which have both magnitude and direction. Example include:
- Velocity
- Displacement
- Force
- Acceleration
- Moment
- Weight
<h3>How to determine whether 20 m/s N is a vector quantity</h3>
- 20 m/s indicates just the speed i.e magnitude
- 20 m/s N indicates the speed i.e magnitude why the N indicates the direction.
Thus, we can conclude that 20 m/s N is a vector quantity because it has both magnitude and direction.
Learn more about scalar and vector quantity:
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<span>The answer is C. temperature, light level, species of bacteria. All three variables are considerations regarding the reproduction rate of the bacteria. The other three answer choices can be eliminated easily because they each contain at least one irrelevant variable. In particular, all three contain a variable that makes reference to Jack's personal characteristics. These do not have any impact on the experiment and readily stand out to disqualify the entire answer choice.</span>
True is the correct anwser
