I need to find the answer for this question this is hard and I can’t find it
What do the cells and tissues of the endocrine system release to help maintain homeostasis in the body?
The cells and tissue of the endocrine system release hormones to help maintain homeostasis in the body.
What is the endocrine system?The complex network of glands and organs that makes up the endocrine system secretes hormones—chemical messengers—directly into the bloodstream. The hormones then travel through the bloodstream to their target cells, where they must act.
The hormone-producing glands may or may not be nearby the target cells. The nervous system and endocrine system collaborate to start or stop movement and physiological function.
A body's homeostasis is maintained by a negative feedback mechanism (activation of one component does not activate the other). All body systems must be in a condition of balance for the body to survive and work properly.
Therefore, to support the body's homeostasis, the cells, and tissues of the endocrine system release hormones.
To learn more about the endocrine system, refer to the link:
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Are all types of respirators the same?
Plants convert ___________ energy from the sun to __________energy (photosynthesis)
Answer:
Plants convert _____Light______ energy from the sun to _____Chemical _____energy (photosynthesis)
Explanation:
Do u want an explanation?
how does a supercharger work?
Answer:
Supercharger works through a pair of rotors that blow air at a high speed into the intake port. As the port then contains a greater quantity of air, it becomes compressed. This enables a higher quantity of fuel to be injected into the combustion chamber, thus generating higher power.
Explanation:
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which of the following people is required by law to wear a seatbelt
Answer:
Car drivers and front seat passengers must wear a seat belt, unless they have a medical exemption certificate. Adults travelling in the rear of a car must also use seatbelts, if they're fitted. It's the responsibility of the adult passenger (not the driver) to make sure that they are using the seatbelt.
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Select the correct answer.
Which of these situations can be solved by an expert system?
A. predicting election results based on all previous election voting trends
B. deciding the sentence in criminal cases
C. predicting the winner of a baseball game based on the statistics of one team
OD.
updating its knowledge base to remove incorrect data
Answer:
A because i know thats it
A simple non-ideal Rankine cycle with water as the working fluid operates between the pressure limits of 15 MPa in the boiler and 125 kPa in the condenser. Saturated steam enters the turbine. Irreversibilities in the turbine cause the steam quality at the outlet of the turbine to be 70 percent. Determine the isentropic efficiency of the turbine and the thermal efficiency of the cycle. Use steam tables. The isentropic efficiency of the turbine is %. The thermal efficiency of the cycle is
Answer:
The right solution is "28.45%".
Explanation:
The given values are:
[tex]P_4=50\ kPa[/tex]
[tex]h_4=0.7(2304.7)+340.5[/tex]
[tex]=1953.83 \ KJ/Kg[/tex]
and,
[tex]P_3=15 \ mPa[/tex]
[tex]h_3=hg[/tex]
[tex]=2610.8 \ KJ/Kg[/tex]
[tex]s_3=sg[/tex]
[tex]=5.3108 \ KJ/Kgh[/tex]
At 45,
⇒ [tex]x_{45} = \frac{5.3108-1.0912}{6.5019}[/tex]
[tex]=0.66[/tex]
At [tex]P_4=50 \ Kpa[/tex],
[tex]h_f=340.54[/tex]
or,
[tex]V_f=0.001030 \ m^3/Kg[/tex]
then,
⇒ [tex]h_2=340.54+0.001030(15\times 10^{3}-50)[/tex]
[tex]=355.94 \ kJ/kg[/tex]
hence,
The isentropic efficiency of turbine will be:
⇒ [tex]n_T=\frac{h_3-h_4}{h_3-h_{45}}[/tex]
[tex]=\frac{2610.8-1953.83}{2610.8-1836.26}[/tex]
[tex]=84.818[/tex] (%)
The thermal efficiency of cycle will be:
⇒ [tex]n_C=\frac{W_T-W_P}{2_{in}}[/tex]
[tex]=\frac{(2610.8-1953-83)-(355.93-340.54)}{2610.8-355.93}[/tex]
[tex]=28.45[/tex] (%)
The isentropic efficiency of the turbine is; η_t = 76.35%
The thermal efficiency of the cycle is; η_th = 27.08%
We are given;
P₃ = 15 mPa
P₄ = 125 kPa
At P₃ = 15 mPa = 15000 kPa, from the first table attached, we have;
Enthalpy of saturation vapour; h_g = h₃ = 2610.8 kJ/kg
Entropy of saturation vapour; s_g = s₃ = 5.3108 kJ/kg.k
Similarly, At P₄ = 125 kPa, from the second table attached, we have;
Enthalpy of evaporation; h_fg = 2240.6 kJ/kg
Enthalpy of saturation; h_f = 444.36 kJ/kg
Entropy of saturation; s_f = s₄ = 1.3741
Specific volume; v_f = 0.001048 m³/kg
Since the the steam quality at the outlet of the turbine to be 70 percent, then;
h₄ = 0.7h_fg + h_f
h₄ = 0.7(2240.6) + 444.36
h₄ = 2012.78 kJ/kg
Formula for the quality of the steam is;
x,₄₋₅ = (s₃ - s₄)/(s₃ + s₄)
x,₄₋₅ = (5.3108 - 1.3741)/(5.3108 + 1.3741)
x,₄₋₅ = 0.5889
Formula for h₂ is;
h₂ = h_f + V_f(P₃ - P₄)
h₂ = 444.36 + 0.001048(15000 - 125)
h₂ = 459.959 kJ/kg
Formula for Isentropic efficiency is;
η_t = (2610.8 - 2012.78)/(2610.8 - (0.7*2610.8))
η_t = 0.7635
η_t = 76.35%
Formula for thermal efficiency here is;
η_th = [(h₃ - h₄) - (h₂ - h_f)]/(h₃ - h₂)
η_th = [(2610.8 - 2012.78) - (459.959 - 444.36)]/(2610.8 - 459.959)
η_th = 0.2708
η_th = 27.08%
Read more about Rankine cycle at; https://brainly.com/question/14894227
Use the graph to determine which statement is true about the end behavior of f(x).
Answer:
As the x-values go to negative infinity, the function’s values go to positive infinity.
Explanation:
if the ans choices are:
As the x-values go to negative infinity, the function’s values go to negative infinity.
As the x-values go to negative infinity, the function’s values go to positive infinity.
As the x-values go to positive infinity, the function’s values go to negative infinity.
As the x-values go to positive infinity, the function’s values go to zero.
the ans is the 2nd choice
Answer:
It's B: As the x-values go to negative infinity, the function’s values go to positive infinity.