1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ber [7]
3 years ago
10

The laws of thermodynamics state that, in a heat engine, _____.

Physics
2 answers:
Daniel [21]3 years ago
5 0

Answer: The correct option is "all the heat energy from a source cannot be converted to mechanical energy"

Explanation:

Heat engine is a system which converts heat energy to the mechanical energy. During this process, a lot of heat energy is lost to surrounding.

Heat engine is a device that uses heat to do work. It is impossible to extract an amount of heat from the reservoir at high temperature and use this heat to do some work.

Some heat is rejected to the reservoir at low temperature.

Therefore, the laws of thermodynamics state that, in a heat engine, all the heat energy from a source cannot be converted to mechanical energy.

olchik [2.2K]3 years ago
4 0
<span>There are four laws of thermodynamic which define and characterize the thermodynamic system at thermal equilibrium. 
The laws of thermodynamics state that, in a heat engine,  </span>all the heat energy from a source cannot be converted to mechanical energy.
You might be interested in
A series combination of two resistors, 7.25 ω and 4.03 ω, is connected to a 9.00 v battery.
almond37 [142]

a. 11.28\Omega

The equivalent resistance of a series combination of two resistors is equal to the sum of the individual resistances:

R_{eq}=R_1 + R_2

In this circuit, we have

R_1 = 7.25 \Omega\\R_2 = 4.03 \Omega

Therefore, the equivalent resistance is

R_{eq}=7.25 \Omega + 4.03 \Omega=11.28 \Omega

b. 5.8 V, 3.2 V

First of all, we need to determine the current flowing through each resistor, which is given by Ohm's law:

I=\frac{V}{R_{eq}}

where V = 9.00 V and R_{eq}=11.28 \Omega. Substituting,

I=\frac{9.00 V}{11.28 \Omega}=0.8 A

Now we can calculate the potential difference across each resistor by using Ohm's law again:

V_1 = I R_1 = (0.8 A)(7.25 \Omega)=5.8 V

V_2 = I R_2 = (0.8 A)(4.03 \Omega)=3.2 V

4 0
2 years ago
All matter is made up of tiny.------
Alinara [238K]
All matter is made up of tiny particles
7 0
3 years ago
Read 2 more answers
A series circuit that is connected to a 50 V, 60 Hz source is made up of 25 ohm resistor, capacite wieh X= 18 ohms, and inductor
Allisa [31]

Answer:

the impedance of the circuit is 25.7 ohms.

Explanation:

It is given that,

Voltage, V = 50 volts

Frequency, f = 60 Hz

Resistance, R = 25 ohms

Capacitive resistance, X_C=18\ ohms

Inductive resistance, X_L=24\ ohms

We need to find the impedance of the circuit. It is given by :

Z=\sqrt{R^2+(X_L-X_C)^2}

Z=\sqrt{25^2+(24-18)^2}

Z = 25.7 ohms

So, the impedance of the circuit is 25.7 ohms. Hence, this is the required solution.

6 0
3 years ago
Definition of termperature in thermodynamics
antoniya [11.8K]
"Temperature is the measure of the average kinetic energy of the particles in a substance, which is related to how hot or cold that substance is. Historically, two equivalent concepts of temperature have developed, the thermodynamic description and a microscopic explanation based on statistical physics"
3 0
2 years ago
A wooden plaque is in the shape of an ellipse with height 30 centimeters and width 22 centimeters. Find an equation for the elli
Volgvan

Answer:

Explanation:

height of Ellipse =30 cm  

i.e. 2 a=30

Width of Ellipse =22 cm

i.e. 2 b=22

Equation of a vertical Ellipse is

\frac{x^2}{b^2}+\frac{y^2}{a^2}=1

a=15 ,b =11

\frac{x^2}{11^2}+\frac{y^2}{15^2}=1

at y=4 cm

\frac{x^2}{11^2}+\frac{4^2}{15^2}=1  

x=\frac{11}{15}\times \sqrt{15^2-4^2}

x=10.6 cm  

5 0
2 years ago
Other questions:
  • Which part of an Adam is actively exchanged or shared in a chemical bond?
    12·1 answer
  • A new planet is discovered that has twice the Earth's mass and twice the Earth's radius. On the surface of this new planet a per
    15·1 answer
  • What percentage of the world's energy needs is supplied by fossil fuels?
    15·1 answer
  • A probe from earth, with a mass of 106 kg, is in orbit around planet Pud in another solar system. Pud has a radius of 106 m and
    14·1 answer
  • A runner accelerates to 4.2 m/s2 for 10 seconds before winning the race. How far did he/she run?
    10·2 answers
  • A child pushes horizontally on a box of mass m which moves with constant speed v across a horizontal floor. The coefficient of f
    14·1 answer
  • 2. How much work does gravity do in causing a 6 kg hammer to fall to the ground from a
    9·1 answer
  • Which is not a characteristic of a compound? Different samples have different properties Can be represented by a chemical formul
    10·1 answer
  • Which statement best describes energy and matter in a closed system?
    9·1 answer
  • Chester's dog Tab will not go into the flower garden because he gets shocked by the electric fence each time. What would be the
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!