FIGURE 1
FIGURE 2
FIGURE I Shows Faraday dise which is used to produce em
the roter and will be rotated by rotating the driving wheel
This device has a solid disc as
1 Discuss any inventions in history which are related to magnetism.
2. Faraday dise requires magnetic field to operate. Discuss the working principles of
Faraday disc by referring to FIGURE 2 as guideline.
3. Refer to FIGURE 2, for the indicated rotation (clockwise rotation viewed from
lenwand). Explain the existence of magnetic force and its direction on those electrons
along the conducting path,
4. Compare the magnitude of magnetic force on clectrons located at the rim and at near
the centre of the dise?
5. Discuss the required equations in order to determine the work done by magnetic force
in moving charge along the radial line between the centre and the rim? State the relation
between work done and generated emty
Answers
1. Some inventions in history which are related to magnetism include the compass, the electromagnet, and the electric motor. The discovery of magnetism dates back to around 600 B.C. in China when they found a naturally occurring magnetic rock, which is now called magnetite. They discovered that the magnetic rock had an effect on iron.
2. Faraday disc requires a magnetic field to operate. It works based on electromagnetic induction. The principles of the Faraday disc can be explained using FIGURE 2. When a magnetic field is applied perpendicular to a disc, it creates a voltage difference between the center and the outer edge of the disc. This voltage can be used to power an electrical device.3. The Faraday disc produces a magnetic force on electrons that are moving along the conducting path. The magnetic force acts perpendicular to the direction of the electron's velocity and the magnetic field.
.4. The magnitude of the magnetic force is greater on the electrons located at the rim than on the electrons located at the center of the disc. The magnetic force is directly proportional to the distance from the center of the disc. Therefore, the magnetic force is stronger at the rim than at the center.5. The work done by the magnetic force in moving a charge along the radial line between the center and the rim is given by the formula W = (1/2)mv². The relation between work done and generated emf is given by the formula W = qEMF.
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Related Questions
All the atoms/elements came from where including yourself
Answers
God created all things in the beginning of time
Explanation:
He said the things he wanted to make an they came into existence.
Im christian so if u dont like the answer or get mad i'm sorry i couldnt help you
A.149 kg baseball moving at 17.7 m/s is caught by a 57 kg catcher at rest on an ice skating rink, wearing
frictionless skates. With what speed does the catcher slide on the ice?
Do NOT put in units or it will be marked wrong! The answer's value only! Please round each answer to 3 places.
MaVa + MbVb = (Ma+b)(Va+b)
Answers
Answer:
v = 12.8 m/s
Explanation:
Applying the law of conservation of energy:
\(m_1u_1+m_2u_2=m_1v_1+m_2v_2\)
where,
m₁ = mass of baseball = 149 kg
m₂ = mass of catcher = 57 kg
u₁ = initial speed of ball = 17.7 m/s
u₂ = initial speed of catcher = 0 m/s
v₁ = v₂ = v = final speed of ball and the final speed of catcher = ?
both are same because ball is in hands of cathcer in the final state.
Therefore,
\((149\ kg)(17.7\ m/s)+(57\ kg)(0\ m/s)=(149\ kg)(v)+(57\ kg)(v)\\\\v = \frac{2637.3\ kgm/s}{206\ kg}\)
v = 12.8 m/s
what is the center of gravity
Answers
Answer:
The center of gravity is the average location of the weight of an object
Explanation:
which two technologies use waves to determine the location and velocity of objects
Lenses
X Rays
Sonar
Radar
Answers
Answer: sonar and radar
Explanation:
Picture
A 7.0 kg cannonball flying rightward at 12 hits a stationary rock. The cannonball keeps moving in the same
S
m
m
direction at 2.0 after the collision but sends the rock flying at 14 towards right
S
S
What is the mass of the rock?
Answers
Answer:
5.0 kg
Explanation:
use the equation; (m1v1i) + (m2v2i) = (m1v1f) + (m2v2f)
what is fire proof plastic
Answers
Explanation:
.Flame retar,dant plastic additi,ves are compounds added to plastics and other materials to inhibit, suppress or de,lay combustion. These compounds are useful in impending burning in the ign,ition phase of fire. They do not prevent char,ring or melting nor do they increase the heat resistance of a material
What should be done in order to decrease the gravitational force between two objects?
O Decrease the distance between the two objects.
O Increase the mass of one of the objects.
O Increase the mass of both of the objects.
O Increase the distance between the two objects.
Answers
Answer:
Decrease the distance between the two objects
Increase the distance between the two objects to decrease the gravitational force between two objects.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
The gravitational constant, denoted by the capital letter G, is an empirical physical constant involved in the calculation of gravitational effects in Sir Isaac Newton's law of universal gravitation and in Albert Einstein's theory of general relativity.
f = Gmm/r²
Increase the distance between the two objects to decrease the gravitational force between two objects.
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Suppose a rock weighing 10 lbs is tossed into a lake. The weight of the water displaced by the rock as it sinks is:
Answers
The weight of the water displaced by the rock as it sinks is 10 lbs.
When an object is submerged in water, it displaces a volume of water equal to its own volume. This is known as Archimedes' principle. In this case, the rock weighs 10 lbs, so it will displace 10 lbs of water. However, it's important to note that the weight of the water displaced is not the same as the volume of water displaced.
The volume of water displaced depends on the size and shape of the object and can be calculated using the formula V = m/p, where V is volume, m is mass, and p is density.
In conclusion, the weight of the water displaced by a rock weighing 10 lbs is also 10 lbs.
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Ik you didnt do the lab but like idek...
Which statement best describes what was demonstrated about speed and pitch in the "Doppler Effect" lab?
Speed and direction do not affect pitch.
Speed and direction affect pitch.
Direction affects pitch but not speed.
Speed affects pitch but not direction.
Answers
Answer:
Speed and direction affect pitch.
Answer:
The correct answer is B. Speed and Direction affect pitch
Explanation:
The Doppler effect, a quantitative analysis that demonstrates how the repetition heard by the stable perceiver depends on whether the perceiver sees the source approach, causes sound and light waves to increase and decrease in frequency due to the proportional motion between the wave source and its receivers. Accordingly, when the wave source is moving, waves are perceived at frequencies that are different from one another.
I know I'm answering a little later, but this will help any people in the future.
Please 5 star and say thx ty and hopes this helps
A charged acrylic rod is brought close to a pith ball. The pith ball attracted to the rod, makes contact, and is then repelled by the red. This an example of
A) grounding
B) static discharge
C) induction
D) conduction
E) none of the above
Answers
Answer:
It is induction
please help me im struggling
Answers
Answer:
right
Explanation:
Which option correctly describes a mod of methanol, CH3OH?
A. Two red spheres, four white spheres
B. One gray sphere, three white spheres, one red sphere
C. One gray sphere, four white spheres, one red sphere
D. One blue sphere, four white spheres, one red sphere
Answers
Answer:
the answer is "C" One gray sphere, four white spheres, one red sphere
Explanation:
I. Is the moon luminous or non-luminous? Give a reason for your answer.
Answers
Answer:
non-luminous
Explanation:
Moon doesn't give off light of its own, that's why the moon is considered a non-luminous body
A scientist adds different amounts of salt to 5 bottles of water she then measures how long it takes for water to boil what is the responding valuable variable in this experiment
Answers
The responding variable in this experiment (B). The amount of salt added to the water is correct option.
The time it takes for the water to boil is the dependent variable. This variable depends on the salt content, making it a dependent variable.
The boiling point of the water is the variable that responds to the different amounts of salt added, and it is the variable that the scientist is measuring and analyzing.
The responding variable in this experiment is the boiling point of the water. The scientist is measuring how long it takes for the water to boil, which is dependent on the amount of salt added to each bottle.
Therefore, the correct option is (B).
The complete question is,
A scientist adds different amounts of salt to 5 bottles of water. She then measures how long it takes for the water to boil. What is the responding variable in this experiment? A. The time it takes for the water to boil, B. The amount of salt added to the water, C. The kind of bottles used, D. The brand of salt used
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two objects are initially the same height above the ground. simultaneously, one is released from rest and the other is shot fof horizontally with a n initial speed of 2.5 m/s. the two objects collide after falling 20m. how far apart were the object initially?
Answers
We may use the equations of motion to calculate the initial distance between the two objects in this issue. Let's call the starting height of the objects "h." Because the first item is at rest, its initial vertical velocity is 0.
When the second item is launched horizontally at a speed of 2.5 m/s, its initial vertical velocity is also 0. When the items crash after falling 20 meters, we may apply the following equation of motion: h = 1/2gt^2 where g denotes gravity's acceleration and t the time it takes for the objects to collide. The horizontal velocity of the second item may be used to calculate the time t: distance = time x speed 20m = 2.5m/s x t t = 8 seconds Now we can use the equation of motion again to find h: h = 1/2gt^2 = 1/2 x 9.81 m/s^2 x (8 s)^2 = 313.92 m Therefore, the initial distance between the objects was 313.92 meters.
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A car of mass 1790 kg traveling at 18.44 m/s collides and sticks to a car with a mass of 1926 kg initially at rest. What is the resulting velocity of the two cars right after the collision, assuming that there's no friction present?
Answers
The resulting velocity of the two cars right after the collision, assuming that there's no friction present is approximately 16.94 m/s.
Mathematically, we can represent this as:m1v1 + m2v2 = (m1 + m2)vf
Where, m1 and v1 are the mass and velocity of the first car before the collision, m2 and v2 are the mass and velocity of the second car before the collision, and vf is the final velocity of the two cars after the collision.
Plugging in the values, we get:
1790 kg × 18.44 m/s + 1926 kg × 0 m/s = (1790 kg + 1926 kg) × vf
Solving for vf, we get:
vf = (1790 kg × 18.44 m/s) / (1790 kg + 1926 kg)
vf ≈ 16.94 m/s
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Which is a characteristic of tolerance? A.enjoying your hobbies B.accepting diversity C.having pride in your cultureD. knowing many types of people
Answers
Answer:
B
Explanation:
Because Tolerance Is The Level Of Ability That Someone Has To Recognise And Help Others Values And Differences.
A stone is thrown in the upwards direction at the velocity of 4 m/s. It attains a certain height and then it falls back. During its motion, it experienced an acceleration of 10 m/s2 in the downward direction. What is the maximum height it attained before falling back?
Answers
Answer: 0.8 m
Explanation:
Velocity of throw = 4m/s
Maximum Height attained(h) =?
Downward acceleration experienced = 10m/s^2
Using the relation:
v^2 = u^2 + 2aS
v = final Velocity = 0 (at maximum height)
u = Initial Velocity = 4
a = g downward acceleration = - 10
0 = 4^2 + 2(-10)(S)
0 = 16 - 20S
20S = 16
S = 16 / 20
S = 0.8m
Maximum Height attained = 0.8m
How does wheel and axle work ?
Answers
Answer:
This system uses angular momentum and torque to do work on objects, typically against the force of gravity. The wheel and axle simple machine is closely related to gears.
A power station that is being started up for the first time generates 6120 MWh of energy over a 10 hour period. (i) If the rated power at full capacity is 660 MW, calculate how long it takes the power station to reach its full power output. (You may assume a constant increase in power from zero to full power) (ii) State what type of power station can be started up fastest and explain why the start-up times for other types of power station are slower. Explain briefly, how this is relevant to optimising the usage of windfarms. c) What is the Bremsstrahlung effect and how can it be avoided in shielding design? d) Sketch the electromagnetic field output from an antenna, describing in detail the two main regions in the output field.
Answers
(i)Therefore, it takes approximately 9.27 hours to reach its full power output.(ii)It is necessary to have quick-start power sources, this helps maintain a stable and reliable electricity supply even when wind speeds fluctuate.(c)The Bremsstrahlung effect needs to be considered to ensure proper radiation protection.(d) The near-field region is characterized by strong electric and magnetic fields while the far-field region represents the radiation zone.
(i) To calculate the time it takes for the power station to reach its full power output, we can use the formula:
Energy = Power × Time
Given that the power station generates 6120 MWh of energy over a 10-hour period and the rated power at full capacity is 660 MW, we can rearrange the formula to solve for time:
Time = Energy ÷ Power
Converting the energy to watt-hours (Wh):
Energy = 6120 MWh × 1,000,000 Wh/MWh = 6,120,000,000 Wh
Converting the power to watt-hours (Wh):
Power = 660 MW × 1,000,000 Wh/MW = 660,000,000 Wh
Now we can calculate the time:
Time = 6,120,000,000 Wh ÷ 660,000,000 Wh ≈ 9.27 hours
Therefore, it takes approximately 9.27 hours (or 9 hours and 16 minutes) for the power station to reach its full power output.
(ii) The type of power station that can be started up fastest is a gas-fired power station. Gas-fired power stations can reach full power output relatively quickly because they use natural gas combustion to produce energy.
In contrast, other types of power stations, such as coal-fired or nuclear power stations, have longer start-up times. Coal-fired power stations require time to heat up the boiler and generate steam, while nuclear power stations need to go through a complex series of procedures to ensure safe and controlled nuclear reactions.
This is relevant to optimizing the usage of windfarms because wind power is intermittent and dependent on the availability of wind. This helps maintain a stable and reliable electricity supply even when wind speeds fluctuate.
(c) The Bremsstrahlung effect is a phenomenon that occurs when charged particles, such as electrons, are decelerated or deflected by the electric fields of atomic nuclei or other charged particles. As a result, they emit electromagnetic radiation in the form of X-rays or gamma rays.
In shielding design, the Bremsstrahlung effect needs to be considered to ensure proper radiation protection. These materials effectively absorb and attenuate the emitted X-rays and gamma rays, reducing the exposure of individuals to harmful radiation.
(d) The electromagnetic field output from an antenna can be represented by two main regions:
Near-field region: This region is closest to the antenna and is also known as the reactive near-field. It extends from the antenna's surface up to a distance typically equal to one wavelength. In the near-field region, the electromagnetic field is characterized by strong electric and magnetic field components.
Far-field region: Also known as the radiating or the Fraunhofer region, this region extends beyond the near-field region.The electric and magnetic fields are perpendicular to each other and to the direction of propagation. The far-field region is further divided into the "Fresnel region," which is closer to the antenna and has some characteristics of the near field, and the "Fraunhofer region," which is farther away and exhibits the properties of the far-field.
The transition between the near-field and the far-field regions is gradual and depends on the antenna's size and operating frequency. The size of the antenna and the distance from it determine the boundary between these regions.
In summary, the near-field region is characterized by strong electric and magnetic fields, while the far-field region represents the radiation zone where the energy is radiated away as electromagnetic waves.
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Suppose you are working on green house, which light you would
use for their growth?
Answers
Answer:
Fluorescent lighting is usually used.
Explanation:
Answer:
HPS lighting or LED light
Explanation:
HPS light is well known choice with a proven track record for growers. While you can also use LED lights as an alternative to incandescent or HPS fixtures for day length extension.
Fatima is watching her pet cat, Winter, napping in the sun. Fatima is curious about the heart rate of Winter when she is napping, so she develops this scientific question: Does a cat’s heart rate change while it is napping
Answers
We have that for the question, Does a cat’s heart rate change while it is napping?
Cats heart rate do not increase while napping.
The range of heart beat of a cat is 140 and 220 bpm
From the Question we are asked
Does a cat’s heart rate change while it is napping.
The answer is NO
Cats heart rate do not increase while napping. Cat have a normal heart beat maximum of 220 beats per minute consistently.The range of heart beat of a cat is 140 and 220 bpm
Therefore
There is something with a cat with heart rate above this number.
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which of these galaxies is most likely to be the oldest? (a) a galaxy in the local group (b) a galaxy observed at a distance of 5 billion light-years (c) a galaxy observed at a distance of 10 billion light-years
Answers
A galaxy in the local group is most likely to be the oldest.
How many light years old is the cosmos?As a result, the cosmos is estimated to be around 25 billion light years across. In 1958, Alan Sandage reduced the Hubble's constant value once more, but he still came up with an age range for the universe between 15 and 25 billion years.It is exactly because of the expanding cosmos that we can see things that are up to 46.1 billion light-years away. There will always be restrictions on the items we can view and the objects we might be able to access, regardless of how much time passes.Our own Milky Way galaxy, according to astronomers, is 13.6 billion years old. The most recent galaxy that we are aware of originated about 500 million years ago.To learn more about galaxy refer to:
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55 points question
please put the answer in order by up to down
please help me
Answers
Answer:
animal and plant
Explanation:
1st is animal
mitochondria
cell membrane
nucleus
endoplasmic reticulum
golgi body
plant cell
cell wall
cell membrane
chloroplast
nucleus
vacuole
endoplasmic reticulum
mitochondria
golgi body
A system containing 1 atm of an ideal gas is doubled in temperature and halved in volume: What is the new pressure? O 2 atm O 1 atm O 0.5 atm O 4 atm
Answers
At STP, an ideal gas has a volume of 22.41 L/mol. Measure the pressure p1 and the temperature T1 of your gas using this value, 22.4 L, Calculate the ratio of pressure to temperature using the formula: k = p1/T1.
What does Boyle's law say 1 atm is?760 mm Hg equals 1 atm. However, the Pascal is the accepted pressure measurement unit around the world. 1 atm Equals 101325 Pa. Through a series of pressure-related experiments, the English physicist Robert Boyle discovered a general law in 1662: the size of a gas inversely increasing pressure. PV is equal to 1.
Henry's Law is it currently?Henry's law constant values can be stated in units like atmospheres for air and moles a cubic meter in water (atm-m3/mol), or in a non - dimensional unit like KH′ = KH/(RT), where KH′ is the non - dimensional unit. Henry's law constant, R is the real gases constant (8.20575 10), and KH is the Henry's laws constant (atm-m3/mol).
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similarities eukaryotic and prokaryotic cells
Answers
Answer:v
Both prokaryotic and eukaryotic cells have similar features, like ribosomes, genetic material, a cytoplasm, and plasma membranes. There are two primary types of eukaryotic cells: animal and plant cells.
Explanation:
A coin released at rest from the top of a tower hits the ground after falling 1.5 s. What is the speed of the coin as it hits the ground? (Disregard air resistance. a = −g = −9.81 m/s 2 .)
Answers
Initial speed of the coin (u)= 0 (As the coin is released from rest)
Acceleration due to gravity (a) = g = 9.81 m/s²
Time of fall (t) = 1.5 s
From equation of motion we have:
\( \boxed{ \bf{v = u + at}}\)
By substituting values in the equation, we get:
\( \longrightarrow \) v = 0 + 9.81 × 1.5
\( \longrightarrow \) v = 14.715 m/s
\( \therefore \) Speed of the coin as it hits the ground/Final speed of the coin = 14.715 m/s
The speed of the coin as it hits the ground is 14.715 m/s.
We can solve the problem above using the equation of acceleration under gravity.
⇒ Equation:
v = u+gt................... Equation 1
⇒ Where:
The final velocity of the coinu = Initial velocity of the coing = acceleration due to gravityt = timeFrom the question,
⇒ Given:
u = 0 m/s (from rest)t = 1.5 sg = -9.81 m/s²Substitute these values into equation 1
v = 0+1.5(-9.81)v = -14.715 m/sNote the speed has a negative sign because it acts in the same direction as the acceleration due to gravity
Hence, the speed of the coin as it hits the ground is 14.715 m/s.
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Compare the physical sciences to the life sciences.
Answers
1.Life science involves fields of discipline catering to living organisms such as we humans while physical science caters to non-living organisms.
2.Life science has more fields of discipline than physical science.
3.Physical science relies on laws and theories to explain concepts while life science relies on biological explanations and can also rely on theories.
Physical science is concerned with the study of natural but non-living objects, while life science is the scientific study of living organisms. There is also a field called biophysics, which is where physics theories and methods are used to study biological systems.
How do I search for an element in a sorted and rotated array?
Answers
To search for an element in a sorted and rotated array, you can use a modified version of binary search.
Here are the steps you can follow:
Here is the code in C++ to search for an element in a sorted and rotated array:
```
int search(int arr[], int l, int h, int key)
{
if (l > h) return -1;
int mid = (l+h)/2;
if (arr[mid] == key) return mid;
/* If arr[l...mid] is sorted */
if (arr[l] <= arr[mid])
{
/* As this subarray is sorted, we can quickly
check if key lies in half or other half */
if (key >= arr[l] && key <= arr[mid])
return search(arr, l, mid-1, key);
return search(arr, mid+1, h, key);
}
/* If arr[l..mid] is not sorted, then arr[mid... r]
must be sorted*/
if (key >= arr[mid] && key <= arr[h])
return search(arr, mid+1, h, key);
return search(arr, l, mid-1, key);
}
```
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A chemist is likely to do which of the following
Answers
Answer:
I need to see the answer choices firsts silly
Explanation:
I need to see the answer choice firsts in order to answer because it can be many different answers