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Grade: 11
        If 0.5icap+o.8jcap+ckcap is a unit vector.Find the value of C.
7 years ago

Answers : (6)

akash solanki
4 Points
							

DEAR NIMISH

 

 If

0.5icap+o.8jcap+ckcap is a unit vector then its magnitude should be 1. So the value of C is 0.33


7 years ago
goutam kunal
15 Points
							

111/2

check it it is 100% correct.

7 years ago
rupali sehgal
19 Points
							

Hello Nimish

modulus of 0.5i+0.8j+C k= √(0.5)2 + (0.8)2 + C

                                   = √0.25+0.64+C2

                                   = √0.89 + C2

But its a unit vector. therefore it''s magnitude should be equal to 1.

√0.89+C2 = 1

squaring both sides,

0.89+C2= 1

C2= 1-0.89 = 0.11

C = 0.33

 

All the best!

7 years ago
Nimish Singh
19 Points
							

Hey the answer was right but tell the way to solve it.

7 years ago
Abhishekh kumar sharma
34 Points
							

0.25+.64+c^2=1

then c=(11)^1\2

6 years ago
Don
20 Points
							The formula is _/a^2+b^2+c^2 = Magnitude Put value in the above formula _/(0.5)^2+(0.8)^2+c^2=1By calculating we get -/0.11
						
2 years ago
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