The amount of exhaust heat discharged per hour from the plant which produces electric energy at the rate of 1. 5 gw, is 9.36×10¹⁹ J/h.
How to calculate the heat discharged per hour?The heat is discharged per hour is equal to the different of total power and actual power.
The plant produces electric energy at the rate of 1. 5 gw. Let assume the efficiency of this power plant is 64% between the temperature of 660 degree C to 330 degree Celsius.
Thus, the maximum efficiency is,
[tex]\eta_{max}=1-\dfrac{660+273}{330+273}\\\eta_{max}=0.55[/tex]
The total power is,
[tex]P_t=\dfrac{P_A}{\eta_{max}\times0.64}\\P_t=\dfrac{1.5}{0.55\times0.64}\\P_t=4.26\rm\; GW[/tex]
Thus, the heat discharged per hour is,
[tex]Q=4.26-1.5\\Q=2.76\text{GW}\\[/tex]
Multiply the value with 3600 to convert it in s/h,
[tex]Q=2.76\times10^9\times3600\text{ J/h}\\Q=9.36\times10^{19}\text{ J/h}\\[/tex]
Thus, the amount of exhaust heat discharged per hour from the plant which produces electric energy at the rate of 1. 5 gw, is 9.36×10¹⁹ J/h.
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To three significant figures, the speed of light is _____.
Explanation:
300,000,000 ÷ 3.00 = 100,000,000 = 10^8
So we can write 300,000,000 = 3.00 x 100,000,000 = 3.00 x 10^8.
The speed of light is 3.00 x 10^8 m/s.
What is the law of conservation of mass? A. the law that states that matter can be created but not destroyed. B. the law that states that matter cannot be created or destroyed. C. the law that states that matter can not be created but can be destroyed.
Answer:
The answer is B
Explanation:
hope it helps :)
Which substance, when mixed with water, will produce the best conductor of electricity?.
Answer:
Table Salt
Explanation:
Table Salt has free ions in water that conduct electricity so when mixed with water produces the best conductance of electricity
What is the equivalent capacitance of the three capacitors in the figure (figure 1)?
The equivalent capacitance of the combination is [tex]\dfrac{1}{C} = \dfrac{1}{C_1}+\dfrac{1}{C_2}[/tex] where C1 and C2 are the capacitance of both capacitors in series.
What is equivalent capacitor?Let the capacitance of both capacitors be C1 and C2. For a series connected capacitors, same charge flows through the capacitors but different voltage flows through them.
Let Q be the amount of charge in each capacitors,
V be the voltage across each capacitors
C be the capacitance of the capacitor.
Using the formula Q = CV where V = Q/C... (1)
For the large capacitor with capacitance of the capacitor C1,
[tex]Q = C_1V_1;[/tex]
[tex]V_1 = \dfrac{Q}{C_1}...(2)[/tex]
where [tex]V_1[/tex] is the voltage across [tex]C_1,[/tex]
For the small capacitor with capacitance of the capacitor [tex]C_2[/tex],
[tex]Q = C_2V_2[/tex];
[tex]V_2 = \dfrac{Q}{C_2} ... (3)[/tex]
where [tex]V_2[/tex] is the voltage across [tex]C_2[/tex],
Total voltage V in the circuit will be;
[tex]V = V_1+V_2... (4)[/tex]
Substituting equation 1, 2 and 3 in equation 4, we have;
[tex]\dfrac{Q}{C} = \dfrac{Q}{C_1} +\dfrac{ Q}{C_2}[/tex]
[tex]\dfrac{Q}{C} = Q({\dfrac{1}{C_1}+\dfrac{1}{C_2})[/tex]
Since change Q is the same for both capacitors since they are in series, they will cancel out to finally have;
[tex]\dfrac{1}{C} = ({\dfrac{1}{C_1}+\dfrac{1}{C_2})[/tex]
This gives the equivalent capacitance of the combination.
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It makes no difference how many coils of wire there are, the same amount of voltage is produced with any number of coils.
True or false
The given statement is false. Because the induced emf is dependent on the number of coil.
What is Faraday law of electromagnetic induction?According to Faraday's law of electromagnetic induction the rate of change of magnetic flux link with coil is responsible for generating emf in the coil result in the flow of amount of current .
So in order to increase the current we need to increase the EMF;
so we can increase it by;
1) Increasing the number of turns
2) Increase the area of the loop
3) By moving the magnet faster
Hence, the given statement is false.
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A discrete spectral line occurs at an angle of 9.1° in the first order spectrum. If the grating has 3,660 lines/cm, what is the wavelength of this color of light?
Answer:
your answer would be c !
Explanation:
I need help with my homework please?
Answer:
1c 2d 9e 6n 3j 9i
Explanation:
That is at least half i will let you Finish it
Answer:
1=e
2=g
3=h
4=f
5=j
6=b
Explanation:
.......
23
Select the correct answer.
Jeff has 10 grams of water and 10 grams of vegetable oil in separate containers. Both liquids have a temperature of 24°C. Jeff heats both liquids
over a flame for five minutes. When he's finished, he discovers that the temperature of the oil increased more than the temperature of the
water. What can Jeff conclude from this experiment?
OA. Vegetable oil is a better conductor of heat than water.
OB. Water is a better conductor of heat than vegetable oil.
OC. Vegetable oil has a higher heat capacity than water.
OD. Vegetable oil has a lower heat capacity than water.
O E. Vegetable oil is a good insulator.
Reset
Next
Answer: Vegetable oil has a higher heat capacity than water. Option C is correct.
It is given 10 grams of water and 10 grams of vegetable oil in separate containers. Both liquids have a temperature of 24°C. Now Jeff heats both liquids over a flame for five minutes.
It is required to find why the temperature of the oil increased more than the temperature of the water.
What can Jeff conclude from his experiment?Heat capacity determines the heat that is supplied to the body that will be caused by heat of the body.
The vegetable oil warmed more when Jeff increased the temperature. This is because the hydrogen bonding present is responsible for this as oil catches fire easily.
Also to change the temperature of the water, we need more energy per gram of particular liquid.
Therefore, Vegetable oil has a higher heat capacity than water as water requires more energy.
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PLEASE ANSWER AS SOON AS POSSIBLE
THANKS :)
Answer:
A is core
B is convection zone
C is photosphere
D is Chromosphere
Explanation:
When is static electricity most noticeable and why.
Answer:
You've probably noticed that static electricity is more noticeable during the winter months. This is because the air is very dry. In the summer, the humidity and moisture in the air help electrons move more quickly, which makes it harder to build up a big static charge.
Explanation:
The load across a 12-v battery consists of a series combination of three resistances are 15 ω, 21 ω, and 24 ω, respectively
The magnitude of the circuit current is 0.20 A. The value of the current in the circuit is found with the help of the ohm's law.
What is ohm’s law?Ohm's law claims that the voltage across a conductor is directly proportional to the current flowing through it.
All the resistance combined in the series so that the equivalent resistance is;
[tex]\rm R_{eq}= R_1+R_2+R_3 \\\\ R_{eq}=15+21+24 \\\\ R_{eq}=60 \ ohm[/tex]
This current-voltage connection may be expressed mathematically by the Ohm's Law;
V=IR
[tex]\rm I_{total} = \frac{V}{R_{total}} \\\\ \rm I_{total} = \frac{12}{60} \\\\ I_{total} = 0.20 \ A[/tex]
Hence, the magnitude of the circuit current is 0.20 A.
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Acceleration depends on which two factors?
Answer:
a = (V2 - V1) / t equation defining acceleration
Acceleration depends on velocity change and the time interval involved.
Subject- Science 6th grade
please help with my hw. Thank you!
Cesium has 37 isotopes, the most of any element on the periodic table. One of Cesium's most stable isotopes undergoes beta decay to form Barium-135. Which of the following is the correct isotopic notation for the original Cesium isotope before it decayed?
Cesium has 37 isotopes. One of Cesium's most stable isotopes undergoes beta decay to form Barium-135. 135 Cs 55 is the correct isotopic notation for the original Cesium isotope before it decayed.
What is beta decay?Beta decay is a radioactive decay in which a proton is converted into a neutron or vice versa inside the nucleus of the radioactive sample.
In beta decay, an electron is ejected which increases the atomic number.
135Cs55 ⇒135Ba56 + 0e-1
Cesium Barium beta particle
Thus, 135 Cs 55 is the correct isotopic notation for the original Cesium isotope before it decayed.
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A 0.200-g ball hangs from a thread in a vertical electric field of 3.00 kN/C directed upward. What is the
charge on the ball if the tension in the thread is (a) zero and (b) 4.00 mN?
A 800hz tuning fork is vibrating, producing a sound wave in the air.
what is the frequency of the sound wave?
800 hz
what is the speed of the sound wave?
what is the wavelength of the sound wave?
Answer:
The frequency of the sound wave is 800Hz
The speed of sound in a is about 340m/s.
Velocity = frequency x wavelength
making wavelength the subject formula
wavelength = Velocity/frequency.
wavelength = 340/800
wavelength = 0.425m.
-. A 2000 kilogram (kg) weather satellite is orbiting Earth. The satellite
takes pictures of Earth to help forecast weather. At what altitude,
in kilometers (km), would the strongest gravitational force be
acting on the satellite while it orbits Earth?
F. 10 000 km
G. 15 000 km
H. 30 000 km
I. 40 000 km
Answer:
H
Explanation:
I think it's H hope that helps
Find the magnitude and direction of
the net force being acted on the
free body diagram below.(look at the picture I provided)
Explanation:
Pick your direction of the perpendicular forces.
Let down be negative and up be positive.
Remember that sum of all the forces is the net force,
So for the vertical forces, we have
[tex]45 + ( - 45) = 0[/tex]
Next, pick your direction of the parallel forces.
Let right be positive and left be negative so we have
[tex]15 + ( - 45) = - 30[/tex]
So our net force is 30 N to the left
Which statement best describes air pressure at high altitudes?
Question 12 options:
Air pressure does not change as altitude increases
It is impossible to accurately measure air pressure at high altitudes
Air pressure decreases as altitude increases
Air pressure increases as altitudes increases
Answer:
Air pressure decreases as altitude increases.
Explanation:
to verify the law of solid friction project work of physics
Create a cylinder with a height of 9 cm and a radius of 5 cm. Notice that the estimated volume calculation is 706. 9 cm3. Drag the orange dot to double the radius. What do you notice about the volume?.
Answer:
Its D , Its is four times larger
Explanation:
I really hope this helps :)
HCl, HBr and HI are all extremely corrosive acids. They are also all part of the same group the Halogens and completely separate when mixed with water. The only one in the group that doesn’t act as strong acid is HF. What make fluorine different from chlorine, bromine, and iodine?
Fluorine different from chlorine, bromine, and iodine,because it is the most electronegative and reactive element in the periodic table.
What is a periodic table ?The periodic table is an organization of all known elements in order of increasing atomic number and repeating chemical characteristics.
They are organized in a tabular format, with a row representing an era and a column representing a group.
Elements are ordered in increasing atomic number order from left to right and top to bottom.
Elements of the same group will have the same valence electron configuration and, as a result, will have comparable chemical characteristics.
Elements in the same period, on the other hand, will have an increasing order of valence electrons. Fluorine,chlorine, bromine, and iodine are halogens.
Hence,fluorine different from chlorine, bromine, and iodine because it is the most electronegative and reactive element in the periodic table.
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Fluorine is most electronegative element and halogen in periodic table
The tendency of attraction towards electrons is highest for Fluorine.In HF
There is a single bond between H and FThe electronegative nature of Fluorine makes the bond stronger and it's hard for H to get out of bond to give H+ Hence it's a very weak acid .The rate of change of velocity is called:.
Answer: Acceleration
Detailed Explanation:
Acceleration is defined as the rate of change of velocity.
Can someone please answer this, ill give you brainliest Would be very appreciated.
sugar dissolves in water = solubility (solvent)
causes ice cubes to get bigger in the ice tray = expand upon freezing
warm water but cold water in the spring = heat capacity/specific heat
"film" on top of water = surface tension
stickiness of water = cohesion
Answer:
See below ~
Explanation:
sugar dissolves in water ⇒ solubility (solvent)
causes ice cubes to get bigger in the ice tray ⇒ expand upon freezing
warm air but cold water in the spring ⇒ heat capacity/specific heat
"film" on top of water ⇒ surface tension
stickiness of water ⇒ cohesion
A 900 kg car speeds up from 33m/s to 45 m/s. How much work is done to increse the speed?
Hint: ( Work done = Change in energy, here it is change in K.E)
Answer:
f=ma
m=900
a=45-33=12÷1=12
12×900=f
f=10800
The 4000 v equipotential surface is 26. 0 cm farther from a positively charged particle than the 5000 v equipotential surface
The charge on the particle when the 4000 v equipotential surface is 26. 0 cm farther from a positively charged particle than the 5000 v equipotential surface is 2.89×10⁻⁵ nC.
How to find the point charge due?The point charge can be found using the following expression.
[tex]q=\dfrac{Vr}{K}[/tex]
Here, V is the potential of a point charge, r is the distance and K is the coulombs constant.
This equation can also be given as,
[tex]r=K\dfrac{q}{V}[/tex]
The 4000 V equipotential surface is 26.0 cm farther from a positively charged particle than the 5000 v equipotential surface. For this case, the distance at both point is,
[tex]r_1=K\dfrac{q}{V_1}\\r_2=K\dfrac{q}{V_2}[/tex]
Subtract both the distance which is equal to 26 cm.
[tex]r_1-r_2=K\dfrac{q}{V_1}-K\dfrac{q}{V_2}\\26=Kq(\dfrac{1}{V_1}-\dfrac{1}{V_2})\\26=(9\times10^9)q(\dfrac{1}{4000}-\dfrac{1}{5000})\\q=2.89\times10^{-14}\rm\; C\\q=2.89\times10^{-5}\rm\; nC[/tex]
Thus, the charge on the particle when the 4000 v equipotential surface is 26. 0 cm farther from a positively charged particle than the 5000 v equipotential surface is 2.89×10⁻⁵ nC.
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if a tree falls in the wood and no won sees it dose it exist
what is area expansivity
An increase in area of a solid when heated is called area or superficial expansivity.
What number and type of hybrid orbital(s) form(s) when one p and one s atomic orbital mix?
Two equivalent hybridized orbitals will form from the mixing of one s-orbital and one p-orbital, that is (sp) orbital.
What are orbitals?Orbital is the place around nucleus where mostly the electrons are present. There are four types of orbitals are present, s, p, d, and f.
The orbitals that are formed by the mixing of these orbitals are called hybrid orbitals.
Thus, two equivalent hybridized orbitals will form from the mixing of one s-orbital and one p-orbital, that is (sp) orbital.
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find the fundamental unit of density.
Answer:
The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre. For example, the density of water is 1 gram per cubic centimetre, and Earth's density is 5.51 grams per cubic centimetre.
Explanation: