Answer:
a) 1.875 volts
b) 5.86 W
Explanation:
Given data:
transmission line resistance = 0.30/cable
power of the generator = 250 kW
if Vt = 80 kV
a) Determine the decrease V along the transmission line
Rms current in cable = P / Vt = 250 / 80 = 3.125 amps
hence the rms voltage drop ( Δrmsvoltage )
Δrmsvoltage = Irms* R = 3.125 * 2 * 0.30 = 1.875 volts
b) Determine the rate Pd at which energy is dissipated in line as thermal energy
Pd = [tex]I^2rms*R[/tex]
= 3.125^2 * 2* 0.30 = 5.86 W
A coin falls off a table and is traveling to the ground. Which claim about the forces acting on the coin must be true?
(Choice A)
There is a net force on the coin.
(Choice B)
There are no forces on the coin.
(Choice C)
There is no net force on the coin.
(Choice D)
There is not enough information.
A coin falls off a table and is traveling to the ground. There is a net force on the coin which is responsible for the motion of the coin. Thus, the correct option is A.
What is Net force?The net force can be defined as is the sum of all the forces which are acting on an object. Net force acting upon an object can accelerate its mass. Some other forces also acts on a body either at rest or motion. The net force is used in a system when there is a significant number of forces acting on the object.
A coin which falls off a table and is still traveling to the ground. Then, it can be concluded that there is a net force which is acting on that coin which is responsible for the motion of the coin.
Therefore, the correct option is A.
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A wave has a period of 2s and a wavelength of 5m. What is the speed of the wave?
Answer:
10m per Second
Explanation:
Jared is experimenting with a force that is attractive only and the weakest of the fundamental forces. He is experimenting with which force?
electromagnetic
strong
gravitational
weak
Answer:
C. gravitational
Explanation:
Took the test!
A child pulls on wagon with force of 20 N if the wagon models a total of 10 M in four seconds what is the average power generated by the child in watts
Answer:
[tex]power = \frac{(force \times distance)}{(time)} \\ power = \frac{(20 \times 10)}{4} \\ power = \frac{200}{4} \\ power = 50 \: watts[/tex]
Is pushing a car across a smooth road positive, negative or zero work?
An example of a waste product of cellular respiration is
a]feces
b]oxygen
c]carbon dioxide
d]ammonia
Answer:
(C) Carbon Dioxide!
Explanation:
This is what animals, and even plants, breath out. :)
Kennedy and Lilly are in science class. They are asked to prove that some forces are non-contact
forces. The girls list five examples of objects exerting a force on each other without touching. Do you
agree with their list? Tell why or why not?
1. Two like magnetic poles repel each other.
2. Putting on a wool sweater can make your hair get static electricity when it rubs against the
sweater.
3. When you bring two negatively charged balloons near each other they push each other away.
4. Magnets stick to a refrigerator.
Number 1 and 3 demonstrate non-contact forces because the magnets or electrically charged objects exert
forces on each other without touching.
3 is the only example of non-contact forces since like charges repel each other.
Number 1 and 4 are non-contact forces since they both use magnets.
All four are good examples of non-contact forces since they all use either magnets or electric charge which are
non-contact forces.
Answer:1,3 and 5
Explanation:
PLS HELP (50 POINTS) I WILL ALSO MARK BRAINLIEST!!!
Electromagnetic Spectrum Lab Report
if you've done this assignment or know what im talking about please helps me! if you get it correct i will give you brainliest!!!!!!!!!!!!!
Objectives(s):
In your own words, what is the purpose of this lab?
Hypothesis:
In this section, please include the predictions you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.
Procedure:
The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome. Using your summary questions at the end of your virtual lab activity, please clearly define the dependent and independent variables of the experiment.
The dependent variable is the one that changes as a result of the independent variable. The spectrum emitted by the unknown celestial object in this situation.
What is the electromagnetic spectrum?The electromagnetic spectrum refers to the variety of frequencies (the spectrum) of electromagnetic radiation, as well as the wavelengths and photon energies associated with each frequency.
The goal of the electromagnetic spectrum experiment is to determine what elements are present in the atmospheres of the planets and moons by examining their absorption spectrums.
The electromagnetic spectrum encompasses electromagnetic waves with frequencies ranging from below one hertz to above 1025 hertz,
The frequency corresponds to wavelengths ranging from thousands of kilometers to a fraction of an atomic nucleus's size.
The electromagnetic waves within each frequency band are given various names, starting at the low frequency (long wavelength) end of the spectrum.
Hence the dependent variable is the one that changes as a result of the independent variable.
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Answer:
Explanation: Electromagnetic Spectrum Lab Reportif you've done this assignment or know what im talking about please helps me! if you get it correct i will give you brainliest!!!!!!!!!!!!!Objectives(s):In your own words, what is the purpose of this lab?Hypothesis:In this section, please include the predictions you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.
What happens to the force between two charged particles if the distance between them is cut in fourth?
Answer: The force between the two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. Hence, if the distance between charges is halved (charges remaining kept constant), the force between the two charges is quadrupled.
Explanation: hope i helped c;
What happens to the force between two charged particles if the distance between them is cut in fourth is that the force between the two charges is directly proportional to the product of the charges and proportional to the square of the distance between them.
What do supernova have to do with heavy elements?
Answer:
When a star dies, it is called a supernova. A supernova contains massive amounts of energy, and the hydrogen and helium that was originally in the star turns into heavier elements ranging from oxygen to iron to gold.
Let me know if this helps!
Answer:
Read Below
Explanation:
During the supernova nucleosynthesis, the r-process creates heavy isotopes, which decay after the event to the first stable isotope, thereby creating the neutron-rich stable isotopes of all heavy elements. The neutron capture occurs in high neutron density with high-temperature conditions.
The resistance of a 24 W, 12 V filament lamp depends on the current flowing through the lamp. For currents up to 0.8 A, the resistance has a constant value of 2.5 Ω.
Calculate the potential difference across the lamp when a current of 0.8 A flows through the lamp.
Answer:
V=IR
V=0.8×2.5
V=2V
where V=potential difference
I=Current
R=Resistance
.........
The Law of Octaves is a relationship that can be observed when
elements are ordered by atomic mass. Newlands observed that every
____ element exhibited similar properties.
Answer:
8 elements
Explanation:
It’s right ✌
Which force is sometimes attractive and has an infinite range?
A.strong nuclear
B.weak nuclear
C.gravitational
D.electromagnetic
Answer:
C. gravitational
Explanation:
Answer:
c
Explanation:
edge
If a 1.8 m tall man that weighs 90 kg stands next to a 10 kg box resting on the ground, the total work done if he lifts the box to the top of his head will be 2,940 J.
True or False
Answer:
false
Explanation:
how does the sun rise and set
a.earth orbit around the sun
b.The sun is center of solar system
c.earth rotates on it tilted axis and orbit around the sun at the same time
Answer:
c. earth rotates on it tilted axis and orbit around the sun at the same time
Explanation:
Earth rotation can be defined as the amount of time taken by planet earth to complete its spinning movement on its axis.
This ultimately implies that, the rotation of earth refers to the time taken by earth to rotate once on its axis. One spinning movement of the earth on its axis takes approximately 24 hours to complete with respect to the sun. Thus, this makes us to experience day and night (sun rise and sun set) due to the rotation of planet about its axis.
Hence, the sun rise and set because the earth rotates on it tilted axis and orbit around the sun at the same time
write down your definition of work in the space below:
Answer:
Work is the energy transferred to or from an object via the application of force along a displacement.
Answer:
an occupation that people do to financally support themselves.
Explanation:
BRAINLIEST?
When you blow across the top of a
soda bottle, it acts like a closed
pipe. If the inside of the bottle is
0.150 m long, what is the
fundamental frequency you hear?
(Speed of sound = 343 m/s)
(Unit = Hz)
Answer:
572
Explanation:
Got it right on Acellus, you take the velocity and divide it by 4 times the length.
A boy is looking into a plane mirror .His nose is 30 cm in front of the mirror .How far is his nose from where its image appears to be ?
Answer:
60cm
Explanation:
30+30=60
Explain How do the attractions between particles in a fluid determine viscosity?
Answer: Viscosity is due to particle mass, particle shape, and the strength of the attraction between the particles of a liquid. In general, the stronger the attractive forces between particles, the higher the viscosity. For many liquids, viscosity decreases when heat is applied.
Explanation:
The magnitude of a force is:
A) How fast an object moves when it is pushed
B) How far an object moves when it is pushed
C) how hard an object is pushed or pulled
D) how long it takes to push or pull an object
Answer:
c
Explanation:
force is how hard it is pulled or pushed
What type of friction is it when two students are pushing a box that is at rest
Yub87654d HELP there is this person trying to kid,.,nap,./, kids so if you see an account called Hernyana report there questions and there account
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76ryvubiuoj78
Answer:
what???
Explanation:
Some snakes have special sensory organs that detect the infrared region of the electromagnetic spectrum.
Compared with human vision, these snakes can sense electromagnetic waves that have
a lower frequency and a shorter wavelength.
a higher frequency and a longer wavelength.
O a lower frequency and a longer wavelength.
O a higher frequency and a shorter wavelength.
Answer:
Some snakes have special sensory organs that detect the infrared region of the electromagnetic spectrum. Compared with human vision, these snakes can sense electromagnetic waves that have: a lower frequency and a shorter wavelength. a higher frequency and a longer wavelength.
Explanation:
Some snakes have special sensory organs that detect the electromagnetic spectrum's infrared region. These snakes can detect electromagnetic waves with a lower frequency and a shorter wavelength than humans. A higher frequency and a longer wavelength. As a result, option B is right.
What is electromagnetic spectrum ?The electromagnetic spectrum encompasses electromagnetic waves with frequencies ranging from less than one hertz to greater than 1025 hertz, corresponding to wavelengths ranging from thousands of kilometres to a fraction of the size of an atomic nucleus. This frequency range is divided into separate bands, and the electromagnetic waves within each frequency band are given different names; beginning at the low-frequency (long-wavelength) end of the spectrum, these are: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
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Two charged objects have a repulsive force of 0.050 N. If the charge of both of the objects is doubled, then what is the new force?
Answer: 4 times grease
Explanation: Force F= C · q1·q2/r². C = Coulomb's constant.
If charges double you have 2q1 and 2q2.
A circle graph shows that one-fourth of the students in a particular school ride the bus every day. What is this equivalent measurement in radians? In degrees?
Answer:
it's 1.57... radians and 90°
As par circle graph, π/2 radian part of total number of the students in a particular school ride the bus every day.
What is circle graph?Pie charts are another name for circle graphs. The graph is shaped like a circle, with many wedges that each represent a portion of the overall.
The circle graph is commonly referred to as a pie chart since these wedges frequently resemble pie slices. The circle graph's angles are proportionate to the quantity they each represent.
According to circle graph:
Total number of student in the particular school = 2π radian.
So, one-fourth of total number of student in the particular school = 2π/4 radian
= π/2 radian.
Hence, according to circle graph, π/2 radian part of total number of the students in a particular school ride the bus every day.
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A 101 Kg racer moves around a flat circular track with a radius of 55 m with a constant speed. The car makes one revolution around the track every 13 seconds. Find the speed of the car.
Answer:
26.6 m/s
Explanation:
[tex]v = r \alpha \\ v = r( \frac{2\pi}{t} ) \\ v = (55)( \frac{2\pi}{13} ) \\ v = 26.6 \: m {s}^{ - 1} [/tex]
All of the different desert animals living together in the Sahara Desert make up a(n)...
O Population
O Community
O Ecosystem
O Organ System
Your car is initially at rest when your hit that gas and the car begins to accelerate at a rate of 1.464 m/s/s. The acceleration lasts for 10.8 s. What is the final speed of the car and how much ground does it cover during this acceleration?
Answer:
A force 1500 n to a 100 kg car . what is the acceleration of the car
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A tow truck exerts a force of 2000 N on a car acceleration it at 1 m/s/s what is the mass of the ca...
A car starts from rest and accelerate at a constant rate. After the car has gone 50m it has a speed...
A force of 50 n is exerted to the right on a 15 kg car at the same time a 30 n force is exerted to ...
A 1100-kg car pulls a boat on a trailer. (a) what total force resists the motion of the car, boat, ...
Your own car has a mass of 2000 kg if your car produces a force of 5000 n , how fast will it accele...
If a 100-N net force acts on a 50-kg car, what will the acceleration of the car be?
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A car initially at rest undergoes uniform acceleration for 6.32 seconds and covers a distance of 12...
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You push forward on a car with a force of 150 N, but the car does not move. What is the net force o...
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A car has a mass of 1 500 kg and acceleration of 2.0 m/s2 what is the nat force acting on the car
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If a net force of 5.0 N forward acts on a 0.60 kg toy car what is its acceleration
Explanation:
how can you take my step sis out the washer machine?
From what I have seen, you do not take your step sis out of the washing machine, you ask her if she has games on her phone and play mine craft like a god obv.