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
Strike441 [17]
3 years ago
11

Can you make the work output of a machine greater than the work input?

Physics
2 answers:
ExtremeBDS [4]3 years ago
5 0

Answer:

It is<em> impossible</em> to construct a machine which produces the <em>work output greater than the work input.</em>

Let us consider the II law of thermodynamics.

According to Kelvin Plank's statement any engine/machine does not give hundred percent efficiency. And violating the PMM-II(Perpetual motion of machine II kind), Always some amount of energy transferred  to the sink or surroundings.

Therefore

                     W(ouput) = Q₁-Q₂

There are many reasons to lower the work output, just for an example friction between the mating parts reduces the work output.

VLD [36.1K]3 years ago
5 0

Answer:

No

Explanation:

A machine makes are work easier. The mechanical advantage of a machine tells us the ability of machine to multiply the input force. No machine is 100% efficient. It means it cannot convert all the input completely to output, let alone give a greater output. Some of the work that is input into the machine is always lost in overcoming friction produced.

You might be interested in
Check the photo and try me help​
finlep [7]

Answer:

<h2>Ohh your photo is blurd </h2>

Explanation:

<h2>Ohh your photo is blurd </h2>
6 0
2 years ago
Suppose you increase your walking speed from 6 m/s to 14 m/s in a period of 2 s. What is your acceleration? m/s2
saveliy_v [14]
4.5m/s you count the number between 6 and 14 and get 9 do 9 divided by 2 and you get 4.5 m/s increase. hope this helps. 
8 0
3 years ago
Charge is placed on two conducting spheres that are very far apart and connected by a long thin wire. The radius of the smaller
mrs_skeptik [129]

Answer:

surface charge density on each sphere is 440 \times 10^{-9} C

Explanation:

given data

radius of smaller sphere = 5 cm

radius of  larger sphere is 12 cm

electric field at surface of larger sphere = 660 kV/m = 660 × 1000 v/m

solution

we apply here electric field formula that is express as

E = (\frac{1}{4\pi\epsilon  })\times  (\frac{Q_{1} }{R^{2} } )    .................1

put here value

660000 = 9 \times 10^9 \times \frac{Q1}{0.12^2}  

Q1 = 1056 × 10^{-9}

and

here field inside a conductor is zero so that electric potential ( V ) is constant

\frac{Q{1} }{R} = \frac{Q{2} }{r}   ..................2

so Q2 will be

Q2 =  \frac{5}{12} \times 1056 \times 10^{-9}  

Q2 =  440 \times 10^{-9}  C

6 0
3 years ago
A 20" round duct is 275' in length. The duct is carrying 2,900 CFM at a friction loss of 0.12 inches WG per 100 feet.
ivolga24 [154]
50500000 FACTION : uo/80
3 0
2 years ago
Tres litros de oxigeno gaseoso a 15 grados centígrados y a presión atmosférica (1atm), se lleva a una presión de 10mm de Hg. ¿ c
lana [24]

Answer:

Three liters of gaseous oxygen at 15 degrees Celsius and at atmospheric pressure (1atm), is brought to a pressure of 10mm Hg. What will be the volume of the gas now if the temperature has not changed?

Explanation:

Given that, the temperature is constant

Then, using gay Lussac law

P1•V1 / T1 = P2•V2 / T2

Since temperature is constant

Then, T1 = T2 = T and they cancels out

So, we are left with

P1•V1 = P2•V2

Given that, .

Initial volume

V1 = 3 litres.

Initial pressure

P1 = 1atm = 101325 Pa

Final pressure

P2 = 10mmHg = 1333.22 Pa

Then, we want to find the final volume V2

Make V2 subject of formula.

V2 = V1•P1 / P2

V2 = 3 × 101325 / 1333.22

V2 = 288 litres

So, the final volume is 288 litres.

In Spanish

Dado que la temperatura es constante

Luego, usando la ley gay de Lussac

P1 • V1 / T1 = P2 • V2 / T2

Como la temperatura es constante

Entonces, T1 = T2 = T y se cancelan

Entonces, nos quedamos con

P1 • V1 = P2 • V2

Dado que, .

Volumen inicial

V1 = 3 litros.

Presión inicial

P1 = 1atm = 101325 Pa

Presión final

P2 = 10 mmHg = 1333.22 Pa

Entonces, queremos encontrar el volumen final V2

Hacer V2 sujeto de fórmula.

V2 = V1 • P1 / P2

V2 = 3 × 101325 / 1333.22

V2 = 288 litros

Entonces, el volumen final es de 288 litros

8 0
3 years ago
Other questions:
  • As a particle moves 10.0 m along an electric field of strength 75 N/C, its electrical potential energy decreases by 4.8 × 10-16
    15·1 answer
  • _____ is a measure of the force of gravity pulling down on an object. it is measured in newtons (N), the common unit for measuri
    5·1 answer
  • As a student is performing a double slit experiment to determine the wavelength of a light source, she realizes that the nodal l
    7·1 answer
  • UDAY WAS TOLD TO PUT SOME CONTAINERS IN ONE OF THE COLD STORES AT WORK. THE LABLES ON THE CONTAINERS READ STORE BELOW -5 C.THERE
    13·1 answer
  • An electrician must decide between 3 heaters. The wire that she is using is rated 15A maximum, anything beyond that is a fire ha
    12·1 answer
  • A 2,493-kg car is moving down a road with a slope (grade of 14% at a constant speed of 13 m/s. what is the direction and magnitu
    6·1 answer
  • What is the electric potential at the point on the x-axis where the electric field is zero?
    9·1 answer
  • How long is a pendulum with a period of 1.0 S on the moon which has 1/6 of the earths gravity
    14·1 answer
  • Which point on the wave diagram below are 90° out of phase with each other?
    12·2 answers
  • Artists can create emphasis in a competition using
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!