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Posted by Vamshik Shetty 1 year, 10 months ago
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Preeti Dabral 1 year, 10 months ago
{tex}\mathop {at\,0^\circ C}\limits^{ice} \to \mathop {at\,0^\circ C}\limits^{water} \to \mathop {at\,6^\circ C}\limits^{water} {/tex}
At equilibrium, heat released by 100gm of water = heat absorbed by 100gm of ice i.e.m1c1 (80 - 6) = m2 L + m2c1(6 - 0)[c1, m1, m2 and L are specific heat of water, mass of water, mass of ice and latent heat of fusion of ice respectively.)
{tex}\therefore{/tex}100 × 1 × 74 = 100 L + 100 × 1 × 6
{tex}\Rightarrow{/tex} L = (1 × 74) -6
{tex}\Rightarrow{/tex}L = 68 cal/gm
This is the required value of latent heat of fusion of ice.
Posted by Aanchal Sharma 1 year, 10 months ago
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Preeti Dabral 1 year, 10 months ago
In the steady-state,
Rate of flow of heat through cube A
= Rate of flow of heat through cube B.
or {tex}\frac{K_{1} A(100-T)}{x}=\frac{K_{2} A(T-0)}{x}{/tex}
or {tex}\frac{300 A(100-T)}{x}=\frac{200 A(T-0)}{x}{/tex}
or 300 - 3T = 2T or 5T = 300
T = 60°C
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I-shaped cross-section provides a large load bearing surface and enough depth to prevent buckling. Also it reduces the weight of the girder without sacrificing its strength.
Posted by Real Pradeep 1 year, 10 months ago
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The size of the mitochondria varies and the structure also varies according to the type of the cell. - Mitochondria is not like other cell organelles, where it is only visible if it is stained specifically.
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Preeti Dabral 1 year, 10 months ago
Time period T= time required to complete one oscillation.
At equilibrium T0=mg.
For small displacement θ
Restoring force =−mgsinθ
for small θ sinθ≈θ
{tex}\begin{aligned} & \Rightarrow \mathrm{fe}=-\operatorname{mg} \theta=-\mathrm{mg}\left(\frac{\mathrm{x}}{\mathrm{l}}\right) \\ & \text { acceleration } \mathrm{a}=\frac{\mathrm{fe}}{\mathrm{m}}=\frac{-\mathrm{g}}{1} \cdot \mathrm{x} \end{aligned}{/tex}
We know for SHM, a=−w2x
{tex}\begin{aligned} & \Rightarrow \text { On comparing we get } \mathrm{w}=\sqrt{\frac{\mathrm{g}}{\mathrm{l}}} \\ & \therefore \text { Time period of oscillation } \mathrm{T}=\frac{2 \Pi}{\mathrm{w}}=2 \Pi \sqrt{\frac{1}{\mathrm{~g}}} \end{aligned}{/tex}
Posted by Sejal Kumari 1 year, 10 months ago
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Preeti Dabral 1 year, 10 months ago
Latent Heat
When a substance adjustments phase, this is it is going from both a strong to a liquid or liquid to gas, the strength, calls for strength to do so. The potential energy withinside the interatomic forces among molecules desires to be conquered with the aid of using the kinetic strength of the movement of the particles earlier than the substance can change phase.
Latent Heat of Fusion and Vaporization
The strength required to extrude the section of a substance is referred to as latent heat. The phrase latent means were hidden. When the phase extrudes is from strong to liquid we ought to use the latent warmth of fusion, and whilst the phase extrude is from liquid to a gas, we ought to use the latent warmth of vaporization.
To initiate a phase change and whole it, a little energy withinside the form of heat is required. This heat is referred to as latent heat. Thus all of the energy provided all through this phase may be applied best for the phase change method and now no longer for increasing the temperature. Thus all through the discharge of latent heat, the temperature stays constant.
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