Rabbit's position vector (r) in the unit vector is 203.5î - 57j and the magnitude and directional angle of vector (r) are 195.35m and 0.004° respectively.
Given
x = 0.3t² + 7.2t + 28
y = 0.22t² - 9.1t +30
At t = 15s
x = 0.3(15)² + 7.2(15) +28 = 203.5
y = 0.22(15)² - 9.1(15) + 30 = -57
The rabbit's position vector (r) in unit vector notation is:
r = 203.5î - 57j
The magnitude of position vector (r)
r = √x² + y²
r = √(203.5)² - (57)² =√38163.25
= 195.35m
The directional angle of position vector (r)
tanθ = y/x = -57/203.5
θ = 
(-57/203.5)
θ = 0.004°
Hence, rabbit's position vector (r) in the unit vector is 203.5î - 57j and the magnitude and directional angle of vector (r) are 195.35m and 0.004° respectively.
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Answer: Option b, c and d
Explanation:
Chronic obstructive pulmonary disease is a life threatening condition in which the lungs gets affected and the ability of the lungs to breathe decreases.
In this case there is a damage in the airways and the tiny air sacs in the lungs. There is an excess of mucus secretion that ultimately hinders the airways causing difficulty in breathing.
The alveoli is also affected as the bronchi oles and alveoli gets narrow which affects the breathing pattern. The inflammation of the air ways also causes the obstruction in the airflow which causes difficulty in breathing.
Hence, the option B, C and D are all the pathophysiology examination of patient suffering from COPD.
Don't know if you typed this too fast spelt something wrong, so I'm not sure, sorry.
Hihi!
According to CDC "healthcare workers should wash hands with soap and water when hands are visibly dirty, contaminated or soiled and use an alcohol-based hand rub when hands are not visibly soiled to reduce bacterial counts."!
I hope I helped!
-Loliarual
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Carbon monoxide is a substance that is harmful to the body when inhale as they can be poisonous.
When carbon monoxide are inhale it can obstruct or prevent the human brain and other important organs in the body from receiving oxygen.
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Example of carbon monoxide are:
Inconclusion the strategy that is least likely to help one avoid the risks associated with carbon monoxide is: Learn what carbon monoxide smells like.
Learn more about carbon monoxide here:
brainly.com/question/21479464
