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JulijaS [17]
2 years ago
9

Please help! Vectors and angles

Mathematics
2 answers:
BaLLatris [955]2 years ago
6 0
The velocity of the ship = 22 ∠157° = (22 cos 157°) i+  (22 sin 157°) j

The velocity of current = 5 ∠213° = (5 cos 213°) i+  (5 sin 213°) j

So, the resultant velocity = 22 ∠157° + 5 ∠213°
 = (22 cos 157°) i+  (22 sin 157°) j + (5 cos 213°) i+  (5 sin 213°) j
 = (22 cos 157° + 5 cos 213°) i + (22 sin 157° + 5 sin 213°) j
 = -24.444 i + 5.873 j
 = 25.14 ∠166.5°

The correct answer is option (1)
<span>1) 25 knots at 166.5 degree</span>








Inessa [10]2 years ago
4 0
You're right, It was A!
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<span>Assuming the reaction is of 1st order, we can start using the formula for rate of 1st order reaction:</span>

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Integrating the equation from N = Ni to Nf and t = ti to tf will result in:

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Hope it works
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