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3 years ago

What is the thermal efficiency of a gas power cycle using thermal energy reservoirs at 627°C and 90°C?

Physics

1 answer:

vlada-n [284]3 years ago

5 0

Answer:

The value is $\eta = 63\%$

Explanation:

Generally the thermal efficiency is mathematically represented as

$\eta = 1 - \frac{T_L}{T_H} * 100$

substituting [ 627°C + 273 = 900K ] for $T_H$ and [ 90°C + 273 = 333K ] for $T_L$

$\eta = 1 - \frac{333}{900} *100$

=> $\eta = 63\%$

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Find the order of magnitude of your age in seconds

Natali5045456 [20]

The order of magnitude of my age in seconds is 10^9. I think you'll find that this is true for anyone who is 32 or older.

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Naily [24]

Answer:

The value of the centripetal forces are same.

Explanation:

Given:

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$F_{c} = \dfrac{mv^{2}}{r}$

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3 years ago

A first order reaction, A -> products, has a rate reaction of .00250 Ms-1 when [A] = . 484 M. (a) What is the rate constant,

tamaranim1 [39]

Answer: a) The rate constant, k, for this reaction is $0.00516s^{-1}$

b) No $t_{\frac{1}{2}}$ does not depend on concentration.

Explanation:

Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

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Given: Order with respect to $A$ = 1

Thus rate law is:

a) $Rate=k[A]^1$

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b) Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

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k = rate constant

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

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3 years ago

Object A of mass M is moving east at speed v. It collides with object B of mass 2M that was initially at rest. The motion of the

Firlakuza [10]

Answer:

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