Which power station is the most efficient overall, the normal power station or the combined heat and power station? Give reasons for your answer.

Answers

Answer 1

Answer:

Cogeneration is a more efficient use of fuel or heat, because otherwise-wasted heat from electricity generation is put to some productive use. Combined heat and power (CHP) plants recover otherwise wasted thermal energy for heating.

Explanation:


Related Questions

Questions
What is the effect of the following variables on the strength of an electromagnet in terms of:
1. lightness of the wire coiled around the nail?
2. Number of coils of wire around the nail?
3. Number of dry cells used?
4. Size of nail?​

Answers

Answer:

1. The tightness of the wire has no effect on the strength of the electromagnet

2. The strength increases with the number of coils

3. The strength of the electromagnet increases with the number of dry cells used

4. The strength of the electromagnet increases with the wideness of the nail but not the length of the nail

Explanation:

The strength of an electromagnet is given by the following relation;

[tex]B = \dfrac{\mu_0 \cdot K \cdot N \cdot I}{L}[/tex]

Where;

B = The magnetic field strength at the center

μ₀ = The magnetic permeability of free space = 4·π × 10⁻⁷ N·A⁻²

N = The number of loops formed by the conductor around the core

I = The current flowing through wire coiled around the nail

K = The magnetic permeability of the nail

L = The length of the coil

Therefore, we have;

1. From the above equation, the tightness of the wire coil around the nail (or the radius, 'R', of the wire) does not does not affect the magnetic field strength

2. The number of coils, 'N', is directly related to the magnetic field strength, 'B', and therefore, increasing the number of turns or coils around the nail, increases the magnetic field strength

3. The current in the circuit is directly related to the magnetic field strength and the number of dry cell used increases the current in the circuit and therefore, can increase the magnetic field strength

4. The size of the nail used in a solenoid and the magnetic field strength are directly related. The wider the nail, the stronger the magnetic field

As distance increases, force decrease and vise versa, as distance decreases then, force increases. This is a ________________ relationship

A) directly proportional
B) toxic
C) inverse
D) reverse

Answers

It is indirectly proportional or inverse so it would be C

Select the correct answer. Which characteristic is not a characteristic of plastic? OA easy to mold O'B. good conductor of heat OC. lightweight and durable OD. repels water​

Answers

Answer:

O'B. Good conductor of heat.

Explanation:

Plastic is not a good conductor of heat because it has no delocalized electrons it's surface to transfer heart.

Answer:

I hope this helps

Explanation:

Find the value of 60 joule in ergs.

Answers

Answer:

600000000 ergs

Explanation:

Formula - multiply the energy value by 1e+7

Un campo magn´etico uniforme B, con magnitud 1.2 mT, apunta verticalmente hacia arriba a lo largo del volumen del sal´on en que usted est´a sentado. Un prot´on de 5.3 MeV se mueve horizontalmente de sur a norte a trav´es de cierto punto en el salon. ¿Qu´e fuerza magn´etica deflectora act´ua sobre el prot´on cuando pasa por este punto? Cu´al es su aceleraci´on, la masa del prot´on es de 1.67x10−27 kg. Resp. 6.1x10−15 N; 3.7x1012 m/s2.

Answers

Answer:

F = 6.12 10⁻¹⁵ N,    a = 3.66 10¹² m / s²

Explanation:

The magnetic force is

            F = q v x B

bold letters indicate vectors, the modulus of this expression is

            F = q v B sin θ

as they indicate that the magnetic field is vertical the proton moves horizontally the angle is 90º

suppose that the energy of the proton is totally kinetic

        E = 5.3 MeV (10⁶ 1.6 10⁻¹⁹J / 1 eV) = 8.48 10⁻¹³ J

       E = K = ½ m v²

       v = [tex]\sqrt{2E/m}[/tex][tex]\sqrt{2 \ 8.48 \ 10^{-13} / 1.67 \ 10^{-27}}[/tex]

       v = [tex]\sqrt{2 \ 8.48 \ 10^{-13} / 1.67 \ 10^{-27}}[/tex]

       v = [tex]\sqrt{10.155 \ 10^{14}}[/tex]

       v = 3.19 10⁷ m / s

we calculate

        F = 1.6 10⁻¹⁹  3.19 10⁷  1.2 10⁻³

        F = 6.12 10⁻¹⁵ N

       

The direction of this out is given by the right hand rule,

thumb in the direction of speed, south to north

fingers extended in the direction of the magnetic field, vertical

the probe points in the direction of the force for a positive charge,  East

To calculate the acceleration we use Newton's second law

        F = ma

        a = F / m

        a = 6.12 10⁻¹⁵ / 1.67 10⁻²⁷

        a = 3.66 10¹² m / s²

the direction of the acceleration is the same as the direction of the force

What is the variable unit for acceleration,gravity and height

Answers

Answer:

HLW ITS JESS BREGOLI

YOUR ANSWER IS HERE

At different points on Earth's surface, the free fall acceleration ranges from 9.764 m/s2 to 9.834 m/s2[2] depending on altitude and latitude, with a conventional standard value of exactly 9.80665 m/s2 (approximately 32.17405 ft/s2). Locations of significant variation from this value are known as gravity anomalies.

Explanation:

HOPE IT MAY HELP YOU !!

A puck is travelling at a speed of 28 m/s. If it has a mass of 200 g, what is its momentum?

Answers

Answer:

Explanation:

Momentum is equal to mass times velocity:

p = mv; therefore,

p = .200(28) and

p = 5.6 [tex]\frac{kg*m}{s}[/tex]

Write the equation which links gravitational potential energy,height and mass.

Answers

Answer:

PE = mgh

Explanation:

The equation of potential energy is mgh.

lol nerd go eat some grass

Answers

Answer:

ur mom hahahahahhahaahahahahahaha

Explanation:

loserrrrrrrrrrr

I only eat . Not grass here or anywhere near.

A constant unbalanced force is applied to an object for a period of time. What will happen to the objects acceleration?

a. It will accelerate in the direction of the net force.
b. It will accelerate opposite the direction net force.
c. There is no acceleration.
d. Not enough information to answer

Answers

Answer:

A

Explanation:

The moving object will accelerate as long as a net force is applied. If a net force is not applied, the object will continue to move at a constant speed along the same path in curved spacetime (due to gravity). If the net force continues the velocity of the object will continue to increase until nearly reaching the limit (speed of light).

One result of the water table reaching the surface is a lake. True False

Answers

Answer:

True

Explanation:

The water table maybe defined as the boundary between groundwater saturated spaces and the soil surface. In more explicit terms, the table table is the water level in shallow dug wells. That is when a well is dug, the position of water in the well is called the water table. The water table may rise during the rainy season or areas of high water volume such that the water table meets the the land surface, when this occurs, we have the formation of a spring. This flow is the channeled to streams, rivers or lakes.

Lakes are generally a body of water surrounded by land.

Can someone help me with this? I will give brainliest! Ridiculous answers will be reported. Thank you.

Answers

Can you post a more clear picture because It’s a little blurry

Please help!!!!! I will give brainliest. Describe four examples of acceleration you see during your day. Choose an object that is slowing down, one that is speeding up, one that is moving at a constant speed but changing direction, and one that is moving at a constant velocity with zero acceleration.

Answers

When the brake is applied to the car and comes to rest after some time is an example of an object that is slowing down.

What is acceleration?

The rate of change of velocity with respect to time is known as acceleration. According to Newton's second law, the eventual effect of all forces applied to a body is its acceleration.

1. When the brake is applied to the body and comes to rest after some time is an example of an object that is slowing down.

2. When a person accelerates the car and the velocity is increasing is an example of speeding up.

3. An object moves in a circular motion moving at a constant speed but changing direction,

4. Acceleration is the rate of change of velocity. If the change in the velocity is constant the acceleration is zero is an example of moving at a constant velocity with zero acceleration.

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What process is mostly responsible for the blue appearance of the sky

Answers

Answer:reflection by dust particles in air

explain the operation of a capacitor in a circuit

Answers

A capacitor is an electronic component that stores and releases electricity in a circuit.

How long will it take the cart to to travel 2.8m, starting from rest?

Answers

Answer:

0.748seconds

Explanation:

s = 1/2 *g*t^2

2.8 = 1/2 * 10* t^2

5.6 = 10 * t^2

0.56 = t^2

t = √0.56

t = 0.7483seconds


A light ray in medium 1 striking a boundary at an angle of theta Subscript 1 Baseline. In medium 2 is a second light ray that is at a larger angle from the normal with angle theta Subscript 2 Baseline. Medium 1 has the index of refraction of n Subscript 1 Baseline and in medium 2 has the index of refraction of n Subscript 2 Baseline.
Which medium (1 or 2) is more dense?
Medium


Answers

Answer:

The correct answer is 1

Explanation:

A light ray in medium 1 striking a boundary at an angle of theta Subscript 1 Baseline. In medium 2 is a second light ray that is at a larger angle from the normal with angle theta Subscript 2 Baseline. Thus, 1 is the correct option.

What is wavelength?

Wavelength is the distance between two identical or similar positions it means that it is the distance between crests or trough in the adjacent cycle of the waveform.

Wavelength is denoted by (lambda).

It is measured in meter, or centimeter, or millimeters.

Mathematically,

Wavelength is equal to velocity divided by frequency,

So,

Wavelength (lambda) = Velocity/frequency.

Velocity is in meter per second.

Frequency is in 1/second.

Prism is a transparent object in which if  sunlight is passed then it will be split in a VIBGYOR

where V = vilot, I = indigo, B = blue, G = green, Y = Yellow, O = orange, R = red.

In this series wavelength of red is higher and vilot is smaller and frequency of violet is higher and red is smaller.

Therefore, A light ray in medium 1 striking a boundary at an angle of theta Subscript 1 Baseline. In medium 2 is a second light ray that is at a larger angle from the normal with angle theta Subscript 2 Baseline. Thus, 1 is the correct option.

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The speed of light in a solid is 1.24 x 108 m/s.
Calculate the index of refraction

Answers

Answer:

125

Explanation:

According to the question, the refractive index of the solid is approximately 2.42.

What is meant by the Refractive index?

The refractive index may be defined as the measure of the bending of a light ray when passing from one medium to another. It can also be defined as the ratio of the velocity of a light ray in an empty space to the velocity of light in a substance, n = c/v.

The Refractive index for a medium may be defined as the ratio of the speed of light in a vacuum to the speed of light in that particular medium. It is a pure ratio and hence it does not have a unit.

According to the question,

The speed of light in a solid = 1.24 × 10⁸ m/s.

The refractive index of the solid = ?

The formula for the Refractive index of a medium = (Speed of light in vacuum) / (Speed of light in the medium).

The Speed of light in vacuum = 3 × 10⁸ m/s

[(3 × 10⁸)m/s] ÷ [(1.24×10⁸)m/s]

= (3×10⁸)/(1.24×10⁸)

= 3/1.24

≈ 2.42

Therefore, the refractive index of the solid is approximately 2.42.

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A radio has a 1.3 A current. If it has a resistance of 35 Ω, what is the potential difference?

Answers

Answer:

22

Explanation:

Answer:

45.5 v

Explanation:

I = 1.3 A

R = 35 Ω

V = I * R

V = 1.3 * 35 = 45.5 v

pleeese help me in this i will put the higher points

Answers

Answer:

b

Explanation:

A book having 50 sheets of paper has a thickness of 0.5cm. What will be the thickness of a single sheet in mm

Answers

Answer:

we have to find the thickness of a single sheet in mm.

so,

50 = 0.5 cm

we know that

0.5 cm = 5 mm

NOW THICKNESS OF 50 SHEETS OF PAPER IS 5mm

•°• thickness of one sheet of paper will

5/50

= 0.1 cm

we have to find the answer in mm so

0.1 cm = 1 mm

Explanation:

hope it may help you

A 1000 kg car accelerates from rest at a rate of 10 m/s² for 3 seconds. A) what is the final velocity of the car?

Answers

Answer:

Refer to the attachment!~

which forces are capable of affecting particles or objects from large distance

Answers

Answer:

only long-range force that affects all particles is the gravitational force.

Explanation:

In nature there are four fundamental forces: nuclear, weak, gravitational and electrical.

The last two are long-range, that is, the forces are zero for infinite distances, the current gravitational on all the particles and the electric one acts on the charged particles, without the chosen charge it is zero, the forces is also zero.

Consequently the only long-range force that affects all particles is the gravitational force.

En el proceso de diseño de ingeniería, ¿qué limitaciones deben tenerse en cuenta al utilizar un modelo / prototipo?

Answers

Answer:

Las limitaciones de un modelo o prototipo son;

1) Los parámetros ambientales (donde se opera el modelo, prototipo o producto) son diferentes y, por lo tanto, pueden producir relaciones y factores ambientales que serán diferentes de los factores ambientales y las relaciones del objeto real.

2) El análisis del problema puede ser inadecuado

3) La posibilidad de falta de satisfacción del cliente con un modelo, preferencia por la demostración real del producto.

4) Reproducción inexacta del entorno del producto durante la prueba del modelo

5) El factor de costo del modelo

6) Mayor complejidad introducida por el modelo / prototipo al análisis de la solución

Explanation:

El modelo o prototipo es la presentación del diseño articulado, construido para demostrar el producto real con el propósito de encontrar la existencia de errores en el diseño que serían corregidos, antes de que se realice la producción real

A Turkey is shot straight up, it takes the turkey 3.16 seconds to reach its maximum height. A) What is the velocity of the turkey at its maximum height. B) What was its initial velocity? C) What is the greatest height it reaches? D)What is its final position exactly 5.00 seconds after it is launched? (Assuming that upwards is positive​

Answers

Answer:

The velocity of an object thrown straight up would be zero at maximum height (just before it starts falling)

Find the initial velocity:

Time = speed/gravitational constant.

Speed = gravitational constant * time

Initial speed = 9.81*3.16

Initial speed = 30.9996

Maximum height:

h = Vinitial^2/ 2g

h = 960.9752/ 2*9.81

h = 48.979368

D)

Displacement after time = vinital * t - 0.5*g*t^2

So: 32.373

6. ¿Es importante conocer el sistema inglés? ¿Por qué?

Answers

Answer: Es importante conocer el sistema ingles porque luego podemos cmmunicar con otros que solo abalan ingles y les podes ayudar con espanol si solo abaln ingles

Explanation:

Parallel incident rays appear to bounce like they have all originated from the same point. What is this point called?

A. cross point

B. midpoint

C. bounce point

D. focal point

Answers

B midpoint because the rays appear to bounce like they have all originated from the same point.

Differentiate between a derived quantity and a derived unit.

Answers

Explanation:

Derived quantities are quantities dependent on fundamental quantities while derived units are the units of these quantities

uses of convex mirrors​

Answers

Explanation:

Two uses of convex mirror are: (i) It is used as a rear view mirror in vehicles. (ii) It is used as a vigilance mirror. (iii) it is used as a reflector in street lamps.

Explanation:

Inside buildings. You might have noticed that large office buildings, stores, hospitals, and other many other buildings have convex mirrors in the corners. ...

Sunglasses. We might have used sunglasses many times. ...

Vehicle mirrors. ...

Magnifying glasses. ...

For security purposes. ...

Street light reflectors.

A box at rest is in a state of equilibrium half way up on a ramp. The ramp has an incline of 42° . What is the force of static friction acting on the box if box has a gravitational force of 112.1 N ?

70 N
80 N
75 N
85 N

Answers

Answer:

75 N

Explanation:

Given that,

The angle of incline of the ramp is 42°.

The gravitational force of the box, W = 112.1 N

We need to find the force of static friction on the box.

We have that the component of the gravitational force acting along the inclined plane i.e.

[tex]F=W\sin\theta\\\\F=112.1\times \sin(42)\\\\F=75\ N[/tex]

So, the force of static friction is equal to 75 N.

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