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inna [77]
2 years ago
7

Find both the scalar projection compvuand the vector projection projvuof the vectoru=〈1,−1,1〉onto the vectorv=〈1,0,1〉. answer:.

. . . . . . . . . . . . . . . . . . .
Physics
1 answer:
forsale [732]2 years ago
4 0

Its Scalar projection \sqrt{2} and Vector projection 1 (i+0j+k).

<h3>How to find scalar projection and vector projection ?</h3>

We have been given two vectors <1 -1 1> and vector <1 0 1> , we are to find out the scalar and vector projection of vector <1 -1 1> onto vector <1 0 1>

We have vector a = <1 -1 1>  and vector b = <1 0 1>

The scalar projection of vector a onto vector b means the magnitude of resolved component of vector a in the direction of vector b and is given by

The scalar projection of vector a onto vector b = \frac{vector b . vector a}{|vector b| }

                                                                             = \frac{(1-1+1)(1+0+1)}{\sqrt{1^{2} }+0+1^{2}  }

                                                                             =\frac{1^{2}  + 1^{2} }\sqrt{2}

                                                                             = \sqrt{2}

The Vector projection of vector a onto vector b means the resolved component of vector a in the direction of vector b and is given by

The vector projection of vector a onto vector b .

                                    = \frac{vector b . vector a}{| vector  b|^{2}  } (i+0j+k)

                                   = \frac{(1-1+1)(1+0+1)}{{1^{2} }+0+1^{2}  }. (i+0j+k)

                                   =  \frac{1^{2}  + 1^{2} }{\sqrt{2} } (i+0j+k)

                                   = 1 (i+0j+k).

Thus from the above conclusion we can say that scalar projection scalar projection \sqrt{2} and vector projection 1 (i+0j+k).  

Learn more about the vector projection here: brainly.com/question/17477640

#SPJ4

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I need help please and thank you in advance
forsale [732]
Try to go to Google and type the Answer and it will show you
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4 years ago
"if the left-hand mass is 2.3 kg ,what should the right-hand mass be so that it accelerates downslope at 0.64 m/s2?"
VARVARA [1.3K]

m₁ = 2.3 kg <span>
θ₁ = 70° </span><span>
θ₂ = 17° </span><span>
g = 9.8 m/s² 

->The component of the gravitational force on m₁ that is parallel down the incline is: </span><span>
F₁ = m₁ × g × sin(θ₁) </span><span>
F₁ = (2.3 kg) × (9.8 m/s²) × sin(70°) = 21.18 N </span><span>

->The component of the gravitational force on m₂ that is parallel down the incline is: </span><span>
F₂ = m₂ × g × sin(θ₂) </span><span>
F₂ = m₂ × (9.8 m/s²) × sin(70°) = m₂ × (2.86 m/s²) </span><span>

Then the total mass of the system is: 
m = m₁ + m₂ </span><span>
m = (2.3 kg) + m₂ </span><span>

If it is given that m₂ slides down the incline, then F₂ must be bigger than F₁, </span><span>
and so the net force on the system must be: 
F = m₂×(2.86 m/s²) - (21.18 N) </span><span>

Using Newton's second law, we know that 
F = m × a 
So if we want the acceleration to be 0.64 m/s², then 
m₂×(2.86 m/s²) - (21.18 N) = [(2.3 kg) + m₂] × (0.64 m/s²) </span><span>
m₂×(2.86 m/s²) - (21.18 N) = (1.47 N) + m₂×(0.64 m/s²) </span><span>
m₂×(2.22 m/s²) = (22.65 N) </span><span>
m₂<span> = 10.2 kg</span></span>

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4 years ago
Explaining Wave Speed through Different Media
Serggg [28]

Explain why the speed of light is lower than

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--------------------

the molecules are forced to vibrate. that vib causes re emission. speed of emiited waves less than in vac.


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4 years ago
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OverLord2011 [107]
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If a total of 1250 offspring were obtained from your cross, determine the number of offspring that you would expect to obtain th
irakobra [83]

Answer:

106 single crossover events

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Total number of offspring = 1250

<u>Determine the number of offspring that would be expected </u>

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( value of the Rf of double crossovers ) * ( Total number of progeny )

= (0.322 * 0.125) = 0.04025  * 1250 = 50

Hence the number of offspring expected to obtain/represent a single crossover event between pr and vg

=  156 - 50 =  106

3 0
3 years ago
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