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

Thomson''s atomic model, THOMSON'S ATOMIC MODEL:- According to Thomson'...

THOMSON'S ATOMIC MODEL:- According to Thomson's atomic model positive charge is distributed uniformly over the entire body of the atom while the electrons are embedded in it. S

Why the earth is rotating itself?, The earth "spins" (rotates) on its axis ...

The earth "spins" (rotates) on its axis based on the action of the materials that accreted to form it, and also on any large collisions it might have undergone. Like the one in the

Find the current in the coil - electric current, A magnetizing force of 800...

A magnetizing force of 8000A/m is applied to a circular magnetic circuit of mean diameter 30cm by passing a current by a coil wound on the circuit. If the coil is uniformly wo

State the applications of JFET, State the Applications of JFET FET is u...

State the Applications of JFET FET is used as a (1)  Buffer amplifier (2)  Low Noise Amplifier (3)  Cascaded Amplifier (4)  Analog Switch (5)  Chopper (6)  Ph

Manufacturing of transformers, Before manufacturing of transformers we must...

Before manufacturing of transformers we must know the important parts of transformer which need to be manufactured. Following are the main parts of transformers. (a)          Fo

Echo vs reverberation, Echo vs. Reverberation Sound is a mechanical wav...

Echo vs. Reverberation Sound is a mechanical wave that travels by a medium from a single location to other. This motion by a medium occurs as one particle of the medium interac

Force constants, what is the force constants of Gd2MoO6?

what is the force constants of Gd2MoO6?

Electricity, is it the current or the voltage which is responsible for elec...

is it the current or the voltage which is responsible for electrc shock?

What is spectrum, The ordered arrangements of radiations according to wavel...

The ordered arrangements of radiations according to wavelengths or frequencies are called as Spectrum. Spectrum may be divide in two parts Emission spectrum and Absorption spectrum

What is a p-n junction, What is a P-N junction? How does it behave under fo...

What is a P-N junction? How does it behave under forward and reverse bias?  Describe with the help of circuit diagrams.

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