Answer:
30.128 days
Explanation:
Given that:
Mean = 25
Standard deviation = 4
Confidence interval = 90% = 0.9
Since the confidence interval should not exceed 90%
Then using z test table
P(z) = 0.9
For 0.8997 , we get = 1.28
For 0.9015, we get = 1.29
∴
By solving
Z = 1.282
Thus, the duration to be used so that it will not exceed 90% C.I is:
Z = (x - μ)/σ
1.282= ( x - 25)/4
1.282 * 4 = x - 25
(1.282*4)+25 = x
x = 30.128 days
Answer: False
Explanation: For implementation of the safety and the health program, there is high requirement of the employees because they are the people who will participate in the program and can make it successful.
Apart from the management and the leader, who are there to manage the program and lead the program as head by taking responsibility of other respectively, employees participation is required.Employees are referred as the people who will do the activities and also teach other about it.Thus, the statement in question is false.
Answer:
they become oils with heat and pressure
they are non-renewable because they take millions of years to form
Answer:
one dependent and on or more independent variables are related.
Answer
given,
P₁ = 8 bar T₁ = 500 K V₁ = 150 m/s
P₂ = 1 bar T₂ = 320 K V₂ = 10 m/s
writing energy equation
h₁ + (KE)₁ + (PE)₁ + Q m = h₂ + (KE)₂ + (PE)₂ + W
ideal gas property of air
T₁ = 500 K h₁ = 503.02 KJ/kg S₁ = 2.21952 kJ/kgK
T₂ = 320 K h₂ = 320.29 KJ/kg S₂ = 1.7679 kJ/kgK
W = 193.93 KJ/Kg
calculation of energy destruction
=
=
=
=
=43.54 KJ/Kg