![Anshuman2002](/avatars/32127.jpg)
Anshuman2002
12.12.2019 •
Physics
How is the thermal efficiency of a heat engine defined? how is the thermal efficiency of a heat engine defined? the efficiency is defined as the ratio between the work performed and the heat output at the lower temperature. the efficiency is defined as the ratio between the heat output at the lower temperature and the heat input at the higher temperature. the efficiency is defined as the ratio between the work performed and the heat input at the higher temperature. the efficiency is defined as the ratio between the heat input at the higher temperature and the heat output at the lower temperature.
Solved
Show answers
More tips
- F Food and Cooking How to Quickly Put your Child to Sleep?...
- F Food and Cooking Discover the Benefits and Properties of Dates...
- C Computers and Internet Dynamically Assigned IP Address: What Is It and How Does It Work?...
- S Style and Beauty How to Get Rid of Acne: Scientifically Proven Methods...
- H Health and Medicine Simple Ways to Lower Cholesterol in the Blood: Tips and Tricks...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
Answers on questions: Physics
- P Physics 1) In quantum physics, Heisenberg s uncertainty principle says that matter and antimatter can appear spontaneously in empty space and annihilate 2) At the beginning,...
- P Physics At time t, gives the position of a 3.0 kg particle relative to the origin of an xy coordinate system ( ModifyingAbove r With right-arrow is in meters and t is in...
- P Physics Earth is just one of the planets that revolve around the Sun in the Solar System, and 5 the Sun is just one of billions of stars within the Milky Way Galaxy. The...
- P Physics If sally is standing on a 200m tall cliff and throws a ball at 40m/s at a 30° angle to the horizontal: a. what is the ball s initial velocity in the y direction?...
- P Physics Gas at a pressure of 0.85 bar, volume 0.25m^3 and temperature 18°c, is compressed until the pressure is 2.8 bar and volume is 0.115m^3, calculate the compression...
- P Physics Adamped harmonic oscillator consists of a block (m = 2.00 kg), a spring (k = 10.0 n/m), and a damping force (f = −bv). initially, it oscillates with an amplitude...
- P Physics When a large star becomes a supernova, its core may be compressed so tightly that it becomes a neutron star, with a radius of about 18.0 km (about the size of a...
- P Physics Someone throws a ball upward with an initial velocity of vi. use the free fall equations to determine and show the final velocity vf the ball has when it returns...
- P Physics 2.5 g of helium at an initial temperature of 300 k interacts thermally with 9.0 g of oxygen at an initial temperature of 620 k . a) what is the initial thermal energy...
- P Physics Suppose you are standing on a number line of the x axis at x = 0 with positive numbers off to your left and negative numbers off to your right. a person wearing...
Ответ:
The efficiency is define as the ratio between the work performed and the heat input at the higher temperature
Explanation:
The efficiency of the heat engine work done using working substance at higher temperature relates to the wasted energy released to the environment through the derived formula below:
Qin = quantity of heat from a working substance such steam or water used to drive electric generator at higher temperature for example
Qout = quantity of heat remaining in the working substance after the work has been done
Qin = Wout + Qout where Wout is the significant work that the higher temperature working substance has been used to do
Wout = Qin - Qout
efficiency = Wout / Qin = ( Qin - Qout) / Qin = Qin / Qin - Qout / Qin = 1 - (Qout / Qin) and
Carnot theorem relates the efficiency with the formula below:
eff( max) = 1 - ( Tc/Th) where Tc is the temperature of the cold reservoir where the working substance is poured and Th is the temperature of the working substance before it input into the thermal engine.
Ответ:
(-2.3, 4.7) & (-1.5, 6.2)
X1. Y1. X2. Y2
M= Y2 - Y1 = 6.2 - 4.7
X2 - X1 -1.5 - (-2.3)
M= 6.2 - 4.7 = 10.7 = 13.375 = 13.4
-1.5 + 2.3 0.8