Concept explainers
a)
To identify: The muzzle velocity of a bullet is a scalar or a

Answer to Problem 140CR
The muzzle velocity of a bullet is a vector quantity. As it has both magnitude and direction.
Explanation of Solution
Given information: The given quantity is velocity.
Since velocity has both magnitude and direction.
Hence, the muzzle velocity of a bullet is a vector quantity.
b)
To identify: The price of a company stock is a scalar or a vector quantity.

Answer to Problem 140CR
The price of a company stock is a scalar quantity. As it has magnitude only.
Explanation of Solution
Given information: The given quantity is company stock.
Since price has magnitude only.
Hence, the price of a company stock is a scalar quantity.
c)
To identify: The air temperature of a room is a scalar or a vector quantity.

Answer to Problem 140CR
The air temperature of a room is a scalar quantity. As it has magnitude only.
Explanation of Solution
Given information: The given quantity is temperature.
Since temperature has magnitude only.
Hence, the air temperature of a room is a scalar quantity.
d)
To identify: The weight of an automobile is a scalar or a vector quantity.

Answer to Problem 140CR
The weight of an automobile is a vector quantity. As it has both magnitude and direction.
Explanation of Solution
Given information: The given quantity is weight.
Since weight has both magnitude and direction.
Hence, the weight of an automobile is a vector quantity.
e)
To identify: The volume of a fish tank is a scalar or a vector quantity.

Answer to Problem 140CR
The volume of a fish tank is a scalar quantity. As it has magnitude only.
Explanation of Solution
Given information: The given quantity is volume.
Since volumes have magnitude only.
Hence, the volume of a fish tank is a scalar quantity.
f)
To identify: The current of a river is a scalar or a vector quantity.

Answer to Problem 140CR
The current of a river is a vector quantity. As it has both magnitude and direction.
Explanation of Solution
Given information: The given quantity is current of a river.
Since current pertains to speed. And as speed has both magnitude and direction.
Hence, the current of a river is a vector quantity.
Chapter 6 Solutions
PRECALCULUS W/LIMITS:GRAPH.APPROACH(HS)
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