All of the following are changeable
2 answers:
Answer:
Explanation:
A risk factor is something that increases the chance of getting a disease. Some are controllable, but some are not.
<u>Stress</u>, <u>eating habits</u>, <u>drug use</u>, exercise, smoking, hygiene, and amount of sleep are all controllable or changeable risk factors. Anybody can change these things in their life.
On the other hand, uncontrollable risk factors, such as age, gender, ethnicity and <u>heredity</u> cannot be changed. Nobody has control over these factors.
So, <em>heredity</em> is the uncontrollable risk factor.
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The maximum value of θ of such the ropes (with a maximum tension of 5,479 N) will be able to support the beam without snapping is:
We can apply the first Newton's law in x and y-direction.
If we do a free body diagram of the system we will have:
x-direction
All the forces acting in this direction are:
(1)
Where:
- T(1) is the tension due to the rope 1
- T(2) is the tension due to the rope 2
Here we just conclude that T(1) = T(2)
y-direction
The forces in this direction are:
(2)
Here W is the weight of the steel beam.
We equal it to zero because we need to find the maximum angle at which the ropes will be able to support the beam without snapping.
Knowing that T(1) = T(2) and W = mg, we have:
T(1) must be equal to 5479 N, so we have:
Therefore, the maximum angle allowed is θ = 37.01°.
You can learn more about tension here:
I hope it helps you!
Answer:
P = 1235.7646 W
Explanation:
Given data:
height of raised sewage = 5.49 m
rate of sewage =1.89*10^6 lt/day
density of sewage = 1.050 kg/m^3
power is written as
work = m g h
h -height
mass lifted per day
= 1984500 kg
time = 24 hours* 3600 seconds per hour
power
P = 1235.7646 W