GEAS 10

A physical quantity that is completely described by a real number is called ___________.

• A. scalar

• B. vector

• C. tensor

• D. none of the above

A convenient means of representing physical quantities that have magnitude and direction.

• A. scalars

• B. vectors

• C. tensors

• D. none of the above

The product of a scalar and a vector is a

• A. scalar

• B. vector

• C. tensor

• D. none of the above

It is simply a vector whose magnitude is 1

• A. moment vector

• B. tensor

• C. unit vector

• D. vector unity

It is sometimes called the scalar product.

• A. dot product

• B. vector product

• C. cross product

• D. unit scalar

To calculate for the force exerted on a charged particle by a magnetic field, _________ is used.

• A. vector product

• B. scalar product

• C. dot product

• D. vector sum

It is sometimes called the vector product.

• A. dot product

• B. cross product

• C. tensor product

• D. unit vector

Which of the following statements is false?

• A. The cross product is commutative.

• B. The cross product is associative with respect to scalar multiplication.

• C. The cross product is distributive with respect to vector addition.

• D. The angle between two identical vectors placed tail to tail is zero.

When a force is represented by a vector, the straight line collinear with the vector is called the ________.

• A. line of apsides

• B. line of reaction

• C. line of vector

• D. line of action

A system of forces is __________ if the lines of action of the forces intersect at a point.

• A. parallel

• B. coplanar

• C. concurrent

• D. two-dimensional