Heat and Theromdynamics – Page 2

the-molar-heat-capacity-of-constant-pressure-of-a-gas-varies-with-the-temperature-according-to-the-equation-n-c-p-a-b-c-2-where-a-b-and-c-are-constant-how-much-heat-transfered-during

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Question Number 58361 by Mohammad umar last updated on 22/Apr/19 $t h e m o l a r h e a t c a p a c i t y o f c o n s t a n t$ $p r e s s u r e o f a g a s v a r i e s w i t h t h e$ $t e m p e r a t u r e a c c o r d i n g t o t h e e q u a t i o n$ $n c_{p = a + b θ - c / θ^{2 \underset{}{}}}$ $w h e r e a . b a n d c a r e c o n s t a n t h o w m u c h h e a t t r a n s f e r e d d u r i n g a n i s o b a r i c p r o c e s s i n w h i c h n m a k e s o f g a s u n d e r g o a t e m p e r a t u r e r i s e f r o m θ_{i} t o θ_{f} ?$ $$\left({b}\right){the}\:{molar}\:{heat}\:{capacity}\:{of}\:{a}\:{metal}\:{at}\:{low}\:{temperature}\:{varies}\:{with}\:{the}\:{temperature}\:{according}\:{to}\:{the}\:{equation}\:{c}={b}\theta+\frac{{a}}{{h}}\theta^{\mathrm{3}}…

A-small-body-with-temperature-and-absorbtivity-is-placed-in-a-large-evaluated-capacity-whose-interior-walls-are-at-a-temperature-w-when-w-is-small-show-that-the-rate-of-heat-tra

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Question Number 58286 by Umar last updated on 21/Apr/19 $A small body with temperature θ and$ $absorbtivity τ is placed in a large$ $evaluated capacity whose interior$ $walls are at a temperature θ_{w} .$ $when θ_{w} - θ is small, show that the$ $rate of heat transfer by radiation is$ $$\:\:\:\:\:\overset{\bullet} {\mathrm{Q}}=\:\mathrm{4}\theta_{\mathrm{w}}…

The-molar-heat-capacity-of-a-metal-at-low-temperature-varies-with-the-temperature-according-to-the-equation-C-b-a-H-3-where-a-b-and-H-are-constant-How-much-heat-per-mole-is-transfe

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Question Number 58216 by Umar last updated on 20/Apr/19 $The molar heat capacity of a metal at$ $low temperature varies with the$ $temperature according to the equation$ $C = b θ + \frac{a}{H} θ^{3}$ $where a, b and H are constant .$ $How much heat per mole is transfered$ $during the process in which the$ $$\mathrm{temperature}\:\mathrm{change}\:\mathrm{from}\:\mathrm{0}.\mathrm{01H}\: \…

The-molar-heat-capacity-of-constant-presure-of-a-gas-varies-with-the-temperature-according-to-the-equation-C-p-a-b-C-2-where-a-b-and-C-are-constants-How-much-heat-is-transfer

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Question Number 58196 by Umar last updated on 19/Apr/19 $The molar heat capacity of constant$ $presure of a gas varies with the temperature$ $according to the equation$ $C_{p} = a + b θ - \frac{C}{θ^{2}}$ $where a, b and C are constants .$ $How much heat is transfered during$ $$\:\:\:\mathrm{an}\:\mathrm{isobaric}\:\mathrm{process}\:\mathrm{in}\:\mathrm{which}\:\mathrm{n}\:\mathrm{mole} \…

A-wolf-weighs-40-kg-how-many-kilo-calories-does-it-need-to-maintain-its-body-temperature-

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Question Number 186028 by mathlove last updated on 31/Jan/23 A wolf weighs 40 kg, how many kilo calories does it need to maintain…

Question-54584

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Question Number 54584 by peter frank last updated on 07/Feb/19 Answered by tanmay.chaudhury50@gmail.com last updated on 07/Feb/19 $t r y i n g$ $t_{e c h o f r o m b o t t o m} = \frac{2 (200)}{v_{s o u n d i n a i r}} + \frac{2 h}{v_{s o u n d i n w a t e r}}$ $${t}_{{echo}\:{from}\:{surface}}…

Question-119452

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Question Number 119452 by peter frank last updated on 24/Oct/20 Commented by TANMAY PANACEA last updated on 24/Oct/20 $f e e d i n g n o w b e c o m e s l o w \dots n o b o d y s h a r e o l y m p i a d q u e s t i o n$ Answered by Olaf last…

Two-carnot-emgines-A-and-B-are-operated-in-series-engine-A-receiepved-heat-from-a-reservoir-at-600-K-and-rejects-it-to-a-reservoir-at-temp-T-B-receives-heat-rejected-by-A-and-in-turn-rejects-it-to-r

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Question Number 52324 by prakash jain last updated on 06/Jan/19 $Two carnot emgines A and B are operated in$ $series . engine A receiepved heat ? from$ $a reservoir at 600 K and rejects it to$ $a reservoir at temp T . B receives$ $heat rejected by A and in turn rejects$ $it to reservoir at 100 K .$ $$\mathrm{Find}\:\frac{\eta_{{B}} }{\eta_{{A}} }…

Two-hot-cubes-are-at-same-temperature-and-both-are-cooled-by-forced-convetion-the-cube-are-made-from-the-same-material-but-one-has-side-of-L-metre-and-other-one-2L-metre-which-cube-is-at-quicker-

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Question Number 51148 by peter frank last updated on 24/Dec/18 $T w o h o t c u b e s a r e a t s a m e$ $t e m p e r a t u r e a n d$ $b o t h a r e c o o l e d b y f o r c e d$ $c o n v e t i o n t h e c u b e a r e m a d e$ $f r o m t h e s a m e m a t e r i a l$ $b u t o n e h a s s i d e o f L m e t r e$ $a n d o t h e r o n e 2 L m e t r e .$ $${which}\:{cube}\:{is}\:{at}\:{quicker}\:…

Two-similar-spherical-bodies-of-radius-R-and-2R-are-initially-are-at-same-temperature-if-they-are-kept-to-cool-under-the-same-condition-show-qualitatively-which-of-the-two-spherical-body-will-cool-

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Question Number 51098 by peter frank last updated on 24/Dec/18 $T w o s i m i l a r s p h e r i c a l$ $b o d i e s o f r a d i u s R a n d 2 R$ $a r e i n i t i a l l y a r e a t s a m e$ $t e m p e r a t u r e . i f t h e y a r e$ $k e p t t o c o o l u n d e r t h e s a m e$ $c o n d i t i o n . s h o w q u a l i t a t i v e l y$ $w h i c h o f t h e t w o s p h e r i c a l$ $${body}\:{will}\:{cool}\:{faster}.…

Category: Heat and Theromdynamics