1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
andrey2020 [161]
4 years ago
13

Find a unit vector that has the same direction as the given vector. −3i + 2j − k

Physics
1 answer:
svet-max [94.6K]4 years ago
7 0

Answer:

Explanation:

Suppose vector is given by

\vec{r}=-3\hat{i}+2\hat{j}-\hat{k}

unit vector in direction of \vec{r} is given by

\hat{r}=\frac{\vec{r}}{|r|}

where |r| is absolute value of \vec{r}

|r|=\sqrt{(-3)^2+(2)^2+(-1)^2}=\sqrt{14}

\hat{r}=\frac{-3\hat{i}+2\hat{j}-\hat{k}}{\sqrt{14}}

You might be interested in
Which group of words do you think is an idiom?
Lady bird [3.3K]

Explanation:

a chip on your shoulder is an example

6 0
3 years ago
Read 2 more answers
. A wave moves at a constant speed along a string. Which one of the following statements is false concerning the motion of parti
Ainat [17]

Answer:

The particle speed is constant.

Explanation:

Particles in gases travel quickly in all directions, frequently clashing with each other and the container's edge. The particles gather kinetic energy and travel faster as the temperature rises. The true average speed of the particles is determined by their mass and temperature; larger particles travel more slower around the same temperature than lighter particles.

Thus, the false statement about a wave moving through a constant speed is that:

The particle speed is constant.

4 0
3 years ago
HELP URGENT!!!!!!!!!!!!!!!!!!!!!!!!
nirvana33 [79]
D
Because the rest of the answers are illogical
5 0
3 years ago
Which statement an iron magnetic is true?
professor190 [17]
The answer is b. Please give braieies
4 0
3 years ago
Write an expression for the magnitude of the normal force, fn, acting on the block, in terms of f2 and the other variables of th
mario62 [17]
<span>If the force is fn, then it acting on the block, in the term of f2 and the other variables of the problems. then we assume the surface is rest on it's rigid, then the magnitude of the force is, fn =f2 sin(?) +m g</span>
7 0
4 years ago
Other questions:
  • When is the tide the highest
    13·2 answers
  • The table shows the commonly eaten foods of some groups of organisms.
    13·1 answer
  • A 56.0 kg box hangs from a rope. what is the tension in the rope if: the box has vy = 5.30 m/s and is speeding up at 5.10 m/s2 ?
    15·1 answer
  • The efficiency of a device such as a lamp can be calculated using this equation: efficiency = (useful energy transferred ÷ energ
    10·1 answer
  • Two identical soccer balls are rolled toward each other. What will be true after they collide head-on? (2 points)
    8·1 answer
  • give reason Nikki is walking on the road with the load on her head. she does not work against Gravity​
    8·1 answer
  • What is neptune made out of?
    5·2 answers
  • Please help guys please<br>#jesuslovesyou​
    15·1 answer
  • Can there be situation when velocity is constant but speed is not
    12·2 answers
  • An optometrist prescribes a corrective lens with a power of +1.5 diopters. The lens maker will start with glass blank with an in
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!