Define the tea in thermos, Physics

Assignment Help:

Define the Tea in Thermos?

One liter of tea at 90° C is poured keen on a vacuum-insulated container (thermos). The surface area of the thermos walls A=600 cm2. The volume among the walls is pumped down to Po~ 5.10-6 atm pressure (at room temperature). The emissivity of the thermal and the walls capacity of water C = 4.2.103 J/kg K. ignore the heat leakage through the stopper, estimate the

a) Net power transfer

b)  Time for the tea to cool from 90°C to 70°C.


Related Discussions:- Define the tea in thermos

Pendulum, how to create a graph on the acceleration due to gravity on a pen...

how to create a graph on the acceleration due to gravity on a pendulum

Can you explain single slit diffraction, Can you explain in single slit dif...

Can you explain in single slit diffraction intensity of 1 st secondary maximum is less than that of principal maximum by how many times?

Explain the supply current, For the circuit shown in Figure , verify the va...

For the circuit shown in Figure , verify the value of V1. If the total circuit resistance is 36Ω. Determine the supply current and the value of resistors R 1 , R 2 and R 3

Horizontal and vertical components , a cat climbs 20 m directly up a tree. ...

a cat climbs 20 m directly up a tree. what is the horizontal component of the cat''s displacement

Energy, What is potential and kinetic energy?

What is potential and kinetic energy?

Need neuroscience assignment help, Neuroscience is a scientific study of t...

Neuroscience is a scientific study of the nervous system. Usually, neuroscience has been seen considered as a branch of biology. Thus, it is now present an interdisciplinary scien

Standing waves on a string, When a string under tension is set into vibrati...

When a string under tension is set into vibration, transverse harmonic rays propagate along its length. When the size of string is same, reflected rays will also exist. The operati

What is the index of refraction, A 95.7-nm film of an unknown substance is ...

A 95.7-nm film of an unknown substance is able to prevent 555-nm light from being reflected when surrounded by air. What is the index of refraction of the substance   2d

Thermo electric current., When the two junctions of a thermo couple are mai...

When the two junctions of a thermo couple are maintained at dissimilar temperatures, then a light begins going through the loop called as thermo electric current.

Circuit theory, what is significance of kirchoff''s law?

what is significance of kirchoff''s law?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd