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zalisa [80]
3 years ago
6

Khjb ,mnbmnvcvn dsegjhb xfdgrtuhn

Physics
1 answer:
elixir [45]3 years ago
6 0
Zzzzzzzzzzzzzzzzzzzzzzzz
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Im doing edge too rn-

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3 years ago
Which describes how the talk test is used to check exercise intensity?
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4 years ago
Describe the magnetic field in the vicinity of a bar magnet.
Lapatulllka [165]
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3 0
3 years ago
Read 2 more answers
An engine absorbs 1.69 kJ from a hot reservoir at 277°C and expels 1.25 kJ to a cold reservoir at 27°C in each cycle.
Anna35 [415]

Answer

Given,

Energy absorbed, Q_H = 1.69\ kJ

Energy expels,Q_C =  1.25\ kJ

Temperature of cold reservoir, T = 27°C

a) Efficiency of engine

 \eta = \dfrac{Q_H - Q_C}{Q_H}\times 100

 \eta = \dfrac{1.69 - 1.25}{1.69}\times 100

\eta =26.03 %

b) Work done by the engine

 W = Q_H- Q_C

 W =1.69 - 1.25

 W = 0.44\ kJ

c) Power output

     t = 0.296 s

   P = \dfrac{W}{t}

   P = \dfrac{0.44}{0.296}

   P = 1.486\ kW

8 0
3 years ago
Which of the following is not used when prediciting volcanic erruptions
bixtya [17]

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earthquake activity is the answer

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4 years ago
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