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Alchen [17]
3 years ago
8

After the body has begun shivering, what explains why it would stop shivering?

Physics
2 answers:
Alexus [3.1K]3 years ago
4 0

Answer: The internal temperature of the body is maintained by the phenomenon known as homeostasis.

Explanation: Homeostasis is the phenomenon by which the internal temperature of the body is maintained.

Once the body feels cold, it starts shivering to maintain warmth in the body by the movement of skeletal muscles.

This phenomenon of maintaining the body temperature is known as Homeostasis. Once the body temperature is maintained shivering stops.

Oksana_A [137]3 years ago
3 0
The body shivers to produce energy and it uses the energy to keep it warm. The body would stop shivering when it has produced enough energy to keep it warm and the atmosphere around it has got warmer
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A piston-cylinder device contains Helium gas initially at 150 kPa, 20 o C, and 0.5m 3 . The helium is now compressed in a polytr
Molodets [167]

Answer:

Explanation:

Given

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T_1=20^{\circ}C

V_1=0.5 m^3

T_2=140^{\circ}C

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R for Helium R=2.076

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Similarly V_2 can be found

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

V_2=0.264 m^3

Work done W=\int_{V_1}^{V_2}PdV

W=\frac{P_2V_2-P_1V_1}{n-1}

W=\frac{mR(T_2_T_1)}{n-1}

Since it is a polytropic Process

therefore PV^n=c

P_1V_1^n=P_2V_2^n

(\frac{V_1}{V_2})^n=\frac{P_2}{P_1}

(\frac{0.5}{0.264})^n=\frac{400}{150}

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W=\frac{0.123\times 2.076(140-20)}{1.533-1}

W=57.48 kJ    

From Energy balance

E_{in}-E_{out}=\Delta E_{system}

Neglecting kinetic and Potential Energy change

Q_{in}+W_{in}=change\ in\ Internal\ Energy

Change in Internal Energy \Delta U=u_2-u_1

\Delta U=mc_v(T_2-T_1)

\Delta U=0.123\times 3.115(140-20)

\Delta U=45.977 kJ

Q_{in}+57.48=45.977

Q_{in}=-11.50 kJ  

i.e. Heat is being removed

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Answer:

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