Answer: 337J/kg
Explanation:
(a) For air, take k = 1.40, R = 287 J/kg ⋅ K, and cp = 1005 J/kg ⋅K. The adiabatic steady-flow energy equation (9.23) is used to compute the downstream velocity:+ = = + = +2 2 2p 21 1 1c T V constant 1005( 260) (75) 1005(207) V or .2 2 2
Ans2mV 335 s≈2 1 p 2 1 2 1 207 273 30Meanwhile, s s c ln(T /T ) R ln( p /p ) 1005 ln 287 ln ,260 273 140+ − = − = − ÷ ÷ +or s 2 − s1 = −105 + 442 ≈ 337 J/kg ⋅ K Ans.(a)
(b) For argon, take k = 1.67, R = 208 J/kg ⋅ K, and cp = 518 J/kg ⋅ K. Repeat part (a):2 2 2p 21 1 1c T V 518(260) (75) 518(207) V , solve .2 2 2 Ans+ = + = + 2mV 246 1 207 273 30s s 518 l n 208 ln 54 320 . (b)260 273 140
Answer: -10% To + 5% Voltage.
Explanation: ThANk yOu VeRY mUCh.
Answer:
(b) BC → A
Explanation:
For given instance of S, certain dependencies (that is to say, A → B and B → C) can be said that they are not violated by this instance of S.
It can be said that an FD holds with respect to a relationship is to make a claim about all appropriate instances of S.
BC → A does not hold over S. To confirm, let's look at the tuples (1, 2, 3) and (4, 2, 3).
Hence, the answer is (b) BC → A.
Answer:
Answer with explanation is in the following attachments
Explanation:
Answer:
Answer below :)
Explanation:
<u>SIZE OF THEODOLITE:</u> A theodolite is designated by diameter of the graduated circle on the lower plate. The common sizes are 8 cm to 12 cm while<em> 14 cm</em> to <em>25 cm</em> instrument are used for triangulation work.