Blogs - OAE Physics

OAE Physics (035) Practice Tests & Test Prep by Exam Edge

(5.0) Based on 34 Reviews

OAE 035 Practice Test Features

Everything you need to pass your certification exam!

The more you know about the OAE Physics exam the better prepared you will be! Our practice tests are designed to help you master both the subject matter and the art of test-taking to be sure you are fully prepared for your exam.

Here are a few things to think about:

What is the OAE Physics certification exam?
Who is Responsible for the OAE exam?
Am I eligibility for the OAE Physics Exam?
What is the best way to ensure your success on the first try?
The benefits of using Exam Edge to pass your OAE Physics exam.

Testimonial Image ExamEdge's online practice test is that they mimicked the actual exam. I walked into the exam feeling confident I knew the material and walked out knowing my time studying with Exam Edge was well worth the effort."

Olivia R., Washington

Select Quantity

Buy one or save big with a practice test bundle for the OAE Physics exam.

# of Practice Tests

Regular Price

Your Savings

Your Price

15 practice tests

~~$449.25~~

Save $300.00

$149.25

Bonus 1: 100 Flash Cards --- Bonus 2: Study Guide Bonus: Flash Cards - Study Guide

10 practice tests

~~$299.50~~

Save $200.00

$99.50

Bonus 1: 100 Flash Cards --- Bonus 2: Study Guide Bonus: Flash Cards - Study Guide

5 practice tests

~~$149.75~~

Save $90.00

$59.75

Bonus : 100 Flash Cards Bonus: Flash Cards

1 practice test

no discount

$29.95

All transactions secured and encrypted
All prices are in US dollars

Get Instant Online Access Now!

OAE Physics Sample Test

1 of 5

When a vector is multiplied by a scalar, how does this change the vector?

Correct Answer:

the magnitude

when a vector is multiplied by a scalar, the resulting transformation affects the vector's magnitude and possibly its direction, depending on the scalar value. this operation is fundamental in vector algebra and has practical implications in multiple fields, such as physics, engineering, and computer graphics.

let's consider a vector $\vec{a}$ in a cartesian coordinate system defined by its components along the basis vectors $e_1 = (1,0,0)$, $e_2 = (0,1,0)$, and $e_3 = (0,0,1)$. the vector can be expressed as $\vec{a} = a_1 e_1 + a_2 e_2 + a_3 e_3$. when this vector is multiplied by a scalar $s$, each component of the vector $a_1, a_2,$ and $a_3$ is multiplied by $s$, resulting in a new vector $s\vec{a} = sa_1 e_1 + sa_2 e_2 + sa_3 e_3$.

the magnitude of the original vector $\vec{a}$ is calculated as $\sqrt{a_1^2 + a_2^2 + a_3^2}$. after scalar multiplication, the magnitude of the new vector $s\vec{a}$ becomes $\sqrt{(sa_1)^2 + (sa_2)^2 + (sa_3)^2}$, which simplifies to $|s|\sqrt{a_1^2 + a_2^2 + a_3^2}$. this shows that the magnitude of the vector has been scaled by the absolute value of the scalar $s$.

the direction of the vector, which is defined by the ratio of its components, is affected differently depending on the scalar $s$. if $s$ is positive, the direction of the vector remains unchanged because each component is simply scaled by $s$. however, if $s$ is negative, the vector reverses its direction since each component is multiplied by a negative number, effectively pointing the vector in the opposite direction.

in conclusion, multiplying a vector by a scalar changes the vector's magnitude by the absolute value of the scalar and may reverse its direction if the scalar is negative. this operation does not alter the direction if the scalar is positive. understanding these effects is crucial for correctly manipulating vectors in various applications.