Can someone help me on this one please thank you all
1 answer:
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(a)
Given:
is in xy plane and
is in the direction of k.
|a|=6 units, |b|=3 and θ = 90°
|a × b| = |a| × |b| sinθ
= |a| × |b| sin90°
= 6 × 3 × 1
|a × b| = 18
(b)
Let
is perpendicular to both
.
In this case,
x-component of is positive.
y-component of is negative.
z-component of is zero.
Now, this is for 3 months, and we're assuming, I guess it doesn't really matter, but using simple interest.
now, 3 months is not even a year, there are 12 months in 1 year, so 3 months is 3/12 years, or 1/4.
now, 3 months is not even a year, there are 12 months in 1 year, so 3 months is 3/12 years, or 1/4.