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In an isolated container contains 1kg of ice at 0 oC. 1kg of warm water (323K) is poured into the container. How much ice (in kgs) remains after the system returns to thermal equilibrium? (by the end of the process?)

As this is an isolated container, we know that the heat transfer with the environment is zero. Since the specific latent heat of ice is a magnitude bigger than the specific heat of water, the container will ...
AM
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Explain, with reference to the Schwarzschild radius, why the sun isn’t a black hole.

The Schwarzschild radius of the sun can be calculated using Rs= (2GM)/c 2 . Substitute in the mass of the sun (M=2 10 30 ), the speed of light (c=3 10 8 ), and the universal gravitational constant (G=6.674 1...
LB
Answered by Libbie B. • Physics tutor
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Explain how the resistance of a filament lamp changes as the potential difference across it increase

As the potential difference across the filament lamp increases the current across the lamp also increases due to Ohm's law.The increase in current flow also causes the lamp to heat up which causes the resist...
FB
Answered by Fraser B. • Physics tutor
19742 Views

What are Newton's 3 laws of motion?

Newtons first law states that is an object is moving it will continue to do so in a constant direction and uniform velocity unless acted upon by an external force.Newtons second law states that the change in...
MZ
Answered by Martynas Z. • Physics tutor
3482 Views

How does a vacuum flask keep a beverage warm for long periods? (6 Marks)

Heat is lost in the fluid through Conduction convection radiation and evaporation. The silvered surfaces reflect infrared rays back into the liquid keeping heat in the fluid reducing heat lost by radiation. ...
LL
Answered by Lewis L. • Physics tutor
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