(124 unread) - smith3826@yahoS Sample Exam Physics 013bMy Questions | bartleby(43) Buddy Hield can't get emotixXNot secure huscience.org/phys013/index.php/sample-exam/C7. Calculate the dot product of a li+2j+1k and b 1i+1j-3k.8. Calculate the cross product of a = li+2j+1k and b=li+1j-3k.9. Calculate the dot product of vectors a and b if a 2, b=3, and the anglebetween them is 90 degrees.10. Calculate the magnitude of the cross product of vectors a and b if a=2,b 3, and the angle between them is 90 degrees11. A particle travels on the x axis. If its velocity is 10m/s at t 2s, what is itsvelocity at t0 seconds if it accelerates at 1m/s??12. What is the maximum height of a ball thrown upwards at 10 m/s?(assume g 10m/s213. How far does a ball go if it has an initial velocity of +10m/s verticallyand +10 m/s horizontally? (assume g=10m/s)

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Asked Oct 18, 2019

Number 7 and 8. Thanks.

(124 unread) - smith3826@yaho
S Sample Exam Physics 013
bMy Questions | bartleby
(43) Buddy Hield can't get emotix
X
Not secure huscience.org/phys013/index.php/sample-exam/
C
7. Calculate the dot product of a li+2j+1k and b 1i+1j-3k.
8. Calculate the cross product of a = li+2j+1k and b=li+1j-3k.
9. Calculate the dot product of vectors a and b if a 2, b=3, and the angle
between them is 90 degrees.
10. Calculate the magnitude of the cross product of vectors a and b if a=2,
b 3, and the angle between them is 90 degrees
11. A particle travels on the x axis. If its velocity is 10m/s at t 2s, what is its
velocity at t0 seconds if it accelerates at 1m/s??
12. What is the maximum height of a ball thrown upwards at 10 m/s?
(assume g 10m/s2
13. How far does a ball go if it has an initial velocity of +10m/s vertically
and +10 m/s horizontally? (assume g=10m/s)
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(124 unread) - smith3826@yaho S Sample Exam Physics 013 bMy Questions | bartleby (43) Buddy Hield can't get emotix X Not secure huscience.org/phys013/index.php/sample-exam/ C 7. Calculate the dot product of a li+2j+1k and b 1i+1j-3k. 8. Calculate the cross product of a = li+2j+1k and b=li+1j-3k. 9. Calculate the dot product of vectors a and b if a 2, b=3, and the angle between them is 90 degrees. 10. Calculate the magnitude of the cross product of vectors a and b if a=2, b 3, and the angle between them is 90 degrees 11. A particle travels on the x axis. If its velocity is 10m/s at t 2s, what is its velocity at t0 seconds if it accelerates at 1m/s?? 12. What is the maximum height of a ball thrown upwards at 10 m/s? (assume g 10m/s2 13. How far does a ball go if it has an initial velocity of +10m/s vertically and +10 m/s horizontally? (assume g=10m/s)

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check_circleExpert Solution
Step 1

7.

Dot product of two vectors

v aibj and v =ci+dj
then it will be
ac bc
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v aibj and v =ci+dj then it will be ac bc

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Step 2

The dot product of a and b is

a li 2j+1k and b li 1j-3k
a b-(1x1)(2x1)+(1x(-3))
=0
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a li 2j+1k and b li 1j-3k a b-(1x1)(2x1)+(1x(-3)) =0

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Step 3

8.

Cross product between ...

v aibjck and v = di ej
fk
then it will be
i j k
(bf -ce)i-(cd-af )j+(ae-bd)k
f
d e
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v aibjck and v = di ej fk then it will be i j k (bf -ce)i-(cd-af )j+(ae-bd)k f d e

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