(marking brainliest) pease help asap! both of the questions are in the pdf, and please let me know which is question one and which is question two, ty!
Answers
1) The relationship in between the electrical energy carriesd by the transmission wires and the amount of the heat loss in it is due to the reason that when the electricity is flown through the wires there are some resistance found in these wires which creates a disturbance in the efficient flow of electricty.Also we know that current have an heating effect when it is in motion as due to if a large amount or magnitude of electricity is flown through the transmission wires it will carry a larger heat effected and also due to the resistance is provided by the wires and so the process of heat loss takes place.
2)It is important to minimize current in transmission wires due to minimize the heat loss and resistance on flowing electric current to make the system more efficient
3)Given Resistance = 250 ohms
Electric potential = 150 volts
so we know Power =
volt^2/Resistance =
=(150^2/250)(ohms/volts)
=(22500/250)watt = 90 watt
4)Heat energy (H) = Power(P)×Time(t)
4)Heat energy (H) = Power(P)×Time(t)= (90×2)joules = 180 joules
Hope it helps
Related Questions
which one of the following is not a derived quantity a)speed b)velocity c)time d)force
Answers
Answer:
c) time
Explanation:
time is a fundamental quantity from which other quantities are derived
Which statement best describes the Sun Earth-Moon system?
Answers
Answer:
A
Explanation:
A. The Moon orbits the Earth, and the Earth-Moon system orbits the Sun
B. The Earth and Moon both orbit the Sun separately
C. The Sun orbits the Earth-Moon system
D. The Moon revolves around Earth but not the Sun
what is velocity Write its formula
Answers
v = Δs/Δt.
Answer:
Explanation:
plz help plz i cant do it
Answers
A : KE = 0 j & PE = 4 j
B : KE = 2 j & PE = 2 j
C : KE = 4 j & PE = 0 j
D : KE = 0 j & PE = 4 j
Answer:
Hey buddy this is the correct answer
Explanation:
A : KE = 0 j & PE = 4 j
B : KE = 2 j & PE = 2 j
C : KE = 4 j & PE = 0 j
D : KE = 0 j & PE = 4 j
HAVE A GREAT DAY<3
Please do it to me thank alot
Answers
Answer:
See explanations below
Explanation:
For resistors in series, the will be added for those in parallel, we will take the sum of their reciprocal
A) 3 2ohms resistors in series
Equivalent resistance = 2 + 2 + 2
Equivalent resistance = 6ohms
B) 2 4 ohms resisstors in parallal
1/R = 1/4 + 1/4
1/R = 2/4
R = 4/2
R = 4ohms
Equivalent resistance is 2ohms
C) 4 ohms with in series with 8ohms = 4 + 8
Equivalent resistance = 4 + 8
Equivalent resistance = 12ohms
D) 4 ohms and 2 ohms in parallel is expressed as;
1/R = 1/4 + 1/2
1/R = 1+2/4
1/R = 3/4
R = 4/3
4/3 ohms in series with 6ohms
Equivalent resistance = 4/3 + 6
Equivalent resistance =4+18/3
Equivalent resistance = 22/3 ohms
A spring with a spring constant of 2.5 N/m is stretched by 0.2 m. What is the potential energy in the spring
Answers
Answer:
Explanation:
PE = [tex]\frac{1}{2}k[/tex](Δ[tex]x^2[/tex])
where k is the spring constant and Δx is the displacement of the spring when an object is hung from it. Plugging in:
[tex]PE=\frac{1}{2}(2.5)(.2^2)[/tex] which gives us
PE = .05 J
A portion size is always equivalent to the serving size listed on the label. A. True B. False
Answers
Answer:
Hi, there your answer is False
Explanation:
the magnetic field 0.100 m from a wire is 4.20x10^-5 T. what is the field 0.200 m from the wire
Answers
Answer:
Your answer is given below:
Explanation:
PLEASE HELP WILL MARK BRAINLIEST *
Answers
what is force? and give its formula
Answers
Force is a push or pull that changes or attempts to change the shape or size of an object's position.
Formula Of ForceF = m × a
Here
F= Force
m= mass of object
a= Acceleration
Hope This Helps You ❤️can someone help me :/ a 30 kg cart is accerlerating at 3 m/s2 (tiny 2) How much force is involved?
Answers
Explanation:
Write what you know
F = ma
m = 30kg
a = 3
Plug and chug
fun fact:numbers that are exponents are called superscripts
a 5 kg block is on a frictionless surface. A 15 N force is applied to the block in a direction parallel to the surface. what is the acceleration of the block?
A. 3 m/s^2
B. 10 m/s^2
C. 20 m/s^2
D. 75 m/s^2
Answers
Answer:
D 75
Explanation:
I'm pretty sure it's just 5x15=75
Answer:
the answer would be 3/s^2
Explanation:
because all u have to do is divide 15 by 5 and u would get 3
Usami Bolt has a mass of 85kg and is running at a steady speed of 10m/s how much kinetic energy does he have
Answers
Answer:
Ek = 4250 J
Explanation:
Data:
m = 85 kgv = 10 m/sEk = ?Formula:
[tex]\boxed{\bold{Ek=\frac{m*(v)^{2}}{2}}}[/tex]Replace and solve:
[tex]\boxed{\bold{Ek=\frac{85\ kg*(10\frac{m}{s})^{2}}{2}}}[/tex][tex]\boxed{\bold{Ek=\frac{85\ kg*100\frac{m^{2}}{s^{2}}}{2}}}[/tex][tex]\boxed{\bold{Ek=\frac{8500\ J}{2}}}[/tex][tex]\boxed{\boxed{\bold{Ek=4250\ J}}}[/tex]It has 4250 Joules of Kinetic Energy.
Greetings.
Shane is riding his bike at a speed of 10m/s. He isn't watching carefully where he is going and almost hit a tree. He abruptly it's the brakes to stop in a time of 4 seconds. What is his acceleration show your work
(NO LINKS PLEASE)
Answers
Answer:
2.5m/s²
Explanation:
a = v/t
Where;
V = velocity (m/s)
a = acceleration (m/s²)
t = time (s).
According to the information provided in this question,
a = ?
v = 10m/s
t = 4
a = 10/4
a = 2.5m/s²
Describe how to determine the thickness of a sheet of a paper without a caliper.
Answers
Answer:
Divide the total measurement of the stack/ream of paper by the number of sheets. For example: 2 inches/100 pages = 0.01-inches sheets.
In case you measured the stack, and it gave you less than an inch, then you need to do the same. For example: 0.5-inches/100 sheets = 0.005-inches per sheet.
Answer:
Divide the total measurement of the stack/ream of paper by the number of sheets. For example: 2 inches/100 pages = 0.01-inches sheets.
In case you measured the stack, and it gave you less than an inch, then you need to do the same. For example: 0.5-inches/100 sheets = 0.005-inches per sheet.
Explanation:
Which is a valid ionic compound?
sodide chlorine
sodium chlorine
sodium chloride
sodide chloride
Answers
Answer:
sodium chloride
Explanation:
Sodium chloride is an ionic compound. The ions of the sodium chloride compound is sodium ion and chloride ion. The sodium ion is cation while the chloride ion is an anion. Sodium chloride is a very stable compound because of the mutual attraction of oppositely charged ions.
difference between acceleration due to gravity and gravity
Answers
Answer:
The gravitational force between earth and any object is known as gravity.
...
When a wave steepens until it collapses it becomes a ________. wave of oscillation forced wave breaker wave of translation swell
Answers
Answer:
Breaker
Explanation: A wave is a motion or disturbance that transfers energy from one location to another without any permanent displacement of the particles involved in the wave motion.
Wave motion can occur in various media such as water, air etc a wave is described as a breaker when it steepens and before it finally stops or losses its energy/collapses.
Calculate their speed between points A and B. Include the units.
What was their average speed for this ride? Include the units.
Answers
= Total Distance/Total time
= 30/3
= 10 km/h
Average speed for this rideAverage speed = Total distance travelled/time taken
= 50/6
= 8.3 km/h
A car starts from rest and goes due east reaching a speed of 40 m/s What additional information is needed in order to calculate the acceleration of the car?
O A. the total distance traveled by the car
B. the total time of the car's motion
Cthe car's mass
O D. the car's initial velocity
Answers
Answer:leter B the answer
Explanation:
The additional information is needed in order to calculate the acceleration of the car is the total time of the car's motion.
What is acceleration?The acceleration of an object is the rate of change of velocity with time.
a = Δv/t
where;
Δ v is change in velocity = final velocity - initial velocityt is the time of motionWhen the change in velocity of the object and time of motion is known, the acceleration of the object can be determined.
Thus, the additional information is needed in order to calculate the acceleration of the car is the total time of the car's motion.
Learn more about acceleration here: https://brainly.com/question/14344386
A skipper on a boat notices wave crests passing the anchor chain every 6.0 seconds. The skipper estimates the distance between crests at 30.0
m. What is the speed of the water waves?
Answers
Explanation:
given Time Period = 5 Sec
Amplitude = 1m, Wave length = 15 m
using time period = 1/ frequency , Frequency = 1/5 cycles per sec = 0.2 sec = 12 per min
wave speed= Frequency * Wave length
speed = 0.2*15 = 3m/s
In a recent year, wind machines in a country generated 183.1 billion kWh of electricity, enough to serve over 17 million households. The nation's total electricity production that year was 4,098 billion kWh. What percent of the total energy production was generated by wind machines
Answers
Answer:
The right answer is "4.4%".
Explanation:
Given:
Generated electricity,
= 183.1 billion kWh
Total electricity production,
= 4098 billion kWh
Now,
The wind energy percentage will be:
= [tex]\frac{183.1}{4098}\times 100[/tex]
= [tex]0.0446\times 100[/tex]
= [tex]4.4[/tex] %
What would make oppositely charged objects attract each other more?
increasing the positive charge of the positively charged object and increasing the negative charge of the
negatively charged object
decreasing the positive charge of the positively charged object and decreasing the negative charge of the
negatively charged object
increasing the distance between the positively charged object and the negatively charged object
maintaining the distance
tance between the positively charged object and the negatively charged object
Hurry I need answers quick I’m timed
Answers
Answer:
A). Increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object.
Explanation:
The two objects possessing opposite or unlike charges attract one another due to the electromagnetic force between the electrons, as well as, protons in order to develop ionic lattices.
As per the question, the objects having unlike charges would attract one another more when we 'escalate the positive charge of the object having a positive charge and enhance the negative charge of the object possessing negative charge.' This will lead the atoms that are losing electrons to be positively(+ve) charged and the atoms gaining electrons to be negatively
(-ve) charged. Thus, the electromagnetic force among them increases and a stronger ionic network develops leading them to attract each other more. Hence, option A is the correct answer.
Answer:
The person above me is wrong the answer is actually B
Explanation:
I put his/her answer and got it wrong and it showed me theat the answer is b not a
what 3 words or 3 phrases that would help you remember the steps to Covalent and Ionic bonding?
Answers
Answer:
non metals and non metals=covalent bond
metals and non metals =ionic bond
transfer all the valence electron to form ionic bond
share valence electron to form covalent bond
28. The mass of a steel building frame is 5500 kg. What power is used to raise it to a helght of 5.0 m If the work is done in 12.0 seconds?
Remember to include your data, equation, and work when solving this problem.
Answers
Answer:
2292W
Explanation:
Use the formula for energy first:
[tex]E=D*M[/tex]
Where E = Energy || D = Distance || M = Mass.
Solve that equation:
E = 5 * 5500 ==> 27500J
To find power, divide energy per time:
27500J / 12s =~ 2292W
Did it in a rush, any problems message me
A tire has a tread pattern with a crevice every 2.20 cm. Each crevice makes a single vibration as the tire moves. What is the frequency of these vibrations if the car moves at 38.0 m/s
Answers
Answer:
17.27 Hz
Explanation:
Applying
v = λf................ Equation 1
Where v = speed of the car, λ = Distance between successive crevice, f = number of crevice moved in 1 seconds(Frequency of the vibration)
make f the subject of the equation
f = v/λ............. Equation 2
From the question,
Given: v = 38 m/s, λ = 2.2 m
Substitute these values into equation 2
f = 38/2.2
f = 17.27 Hz
A group of students designed the string drip system to water plants without irrigation, as shown in the image. They placed a jug
next to a plant with the jug's mouth above the plant's pot. Then, they placed one end of a piece of cotton string at the bottom of
the jug and inserted the other end into the soil, about 8 cm deep, close to the plant's root. They kept the string out of direct
sunlight. Finally, they added water to the jug. After a few days, the students decided that their drip was too slow.
ago
How might the students modify their design to increase the controlled drip?
O A.
use a wider jug
B. use a longer string
O c. add more water to the jug
O D. add more strings to the design
Answers
Answer:
D add more string and water
An iron nail having threads along its cylindrical surface is
Answers
Answer:
A screw is a mechanism that converts rotational motion to linear motion, and a torque (rotational force) to a linear force.[1] It is one of the six classical simple machines. The most common form consists of a cylindrical shaft with helical grooves or ridges called threads around the outside.[2][3] The screw passes through a hole in another object or medium, with threads on the inside of the hole that mesh with the screw's threads. When the shaft of the screw is rotated relative to the stationary threads, the screw moves along its axis relative to the medium surrounding it; for example rotating a wood screw forces it into wood. In screw mechanisms, either the screw shaft can rotate through a threaded hole in a stationary object, or a threaded collar such as a nut can rotate around a stationary screw shaft.[4][5] Geometrically, a screw can be viewed as a narrow inclined plane wrapped around a cylinder.
Explanation:
The magnetic field 0.100 m from a
wire is 4.20 x 10-5 T. What is the field
0.200 m from the wire (twice as far)?
[?] *10^[?]T
Answers
Answer:
Your answer is given below:
Explanation:
A 15-watt bulb is connected to a circuit that has a total of 60. Ω of resistance. How many electrons are passing through that bulb every second?
Answers
Answer:
3.2075*10^16
Explanation:
Q=P/V just search up a converter and youll get 30V and so you do 15/30 which is a half and a single coulomb is 6.415*10^16 so you half it. I belive this is correct if you dont belive me wait for someone else smarter to answer and compare.