Answer:
A solenoid is a long coil of wire wrapped in many turns. When a current passes through it, it creates a nearly uniform magnetic field inside. Solenoids can convert electric current to mechanical action, and so are very commonly used as switches. The magnetic field within a solenoid depends upon the current and density of turns.
Explanation:
hope this helped its pretty long
An easy 20 points + brainiest.
Name the order of the planets in our solar system and our solar system's name.
Answer:
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, Milky Way ;-;
Review for qtr 3 exam
Answer:
Uhm where are the questions and answers?
Which list places different units of matter in the correct sequence from smaller to largest
Answer:
D. Protons, atoms, rock particles, bricks, buildings
Explanation:
The correct sequence that shows the units of matter from smaller to largest is option A, protons, atoms, rock particles , bricks and buildings.
What are units of matter ?The basic units of matter is called atoms. These atoms are made of subatomic particles namely, protons, electrons and neutrons. The protons and neutrons are located inside nucleus and the electrons are revolving around.
Every substance in the universe are made of atoms. Atoms of different elements combines to form compounds. Different solid compounds and molecules deposits to forms rocks.
Rocks can be molded to bricks and other shapes they are then used to construct buildings. Therefore, the correct sequence of the units of matter from smallest to largest is protons, atoms, rocks, bricks and buildings.
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Seat belt laws are a good idea because of which of the following law of motion?
A. Newton’s second law of motion
B. Newton’s first law of motion
C. Newton’s third law of motion
D. Murphy’s law of motion
E. None of the above
Please help
Answer:
B. Newton's first law of motion.
Explanation:
The law of inertia or the first law of motion.
Answer:
Newton's first law
Explanation:
This law states that
Every object remains in at rest or its motion unless any external force is appliedWhen car breaks sudden then we get pulled forwards so seat belt is for safety
Which two statements are true of electromagnetic waves?
Answer:
Where are the statements mate?
Two small speakers, 0.695 m apart, are facing in the same direction. They are driven by one 668 Hz oscillator and therefore emit identical sound waves in phase with one another at the respective points of origin. (The speed of sound waves in air is 343 m/s.)
(a) A sound engineer wishes to stand in front of one of the speakers, at the closest point (i.e., smallest x-value) where intensity is at a relative maximum. At what distance x from the nearest speaker should he position himself? (Enter your answer in m.)
(b) The sound engineer now wishes to stand at the closest point along that line where intensity is at a relative minimum. At what distance x should he position himself now? (Enter your answer in m.)
A) The distance x from the nearest speaker when intensity is at maximum ; 0.4272 m
B) The distance x from the nearest speaker when intensity is at minimum ; 0.8123 m
Given data :
Distance between speakers ( d ) = 0.695 m
Frequency of oscillator = 668 Hz
Speed of sound waves in air ( v ) = 343 m/s
A) Determine the distance x from the nearest speaker when he stands where intensity is at maximumGiven that
λ = v / f
= 343 / 668
= 0.5135
Also
Δx = [tex]\sqrt{d^2+x^2} - x[/tex]
Δx = λ for maximum intensity
λ = [tex]\sqrt{d^2+x^2} - x[/tex]
x = ( d² - λ² ) / λ
= ( 0.695² - 0.5135² ) / 0.5135
= 0.4272 m
B) Determine the distance x from the nearest speaker when he stands where intensity is at minimumGiven that
λ = v / f
= 343 / 668
= 0.5135
Also
Δx = S₁P - S₂P
Δx = [tex]\sqrt{d^2+x^2} - x[/tex]
since the intensity is minimum
Δx = λ/2
Therefore
λ/2 = [tex]\sqrt{d^2+x^2} - x[/tex]
x = ( d² - λ²/4 ) / λ
= ( 0.695² - 0.5135² / 4 ) / 0.5135
= ( 0.695² - 0.0659 ) / 0.5135
= 0.4171 / 0.5135 = 0.8123 m
Hence we can conclude that The distance x from the nearest speaker when intensity is at maximum ; 0.4272 m and The distance x from the nearest speaker when intensity is at minimum ; 0.8123 m.
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Which changes in an electric motor will make the motor stronger? select 3 options. using a stronger permanent magnet using a weaker permanent magnet increasing current in the electromagnet decreasing current in the electromagnet increasing the distance between the magnets decreasing the distance between the magnets
1. Using Strong Permanent. 2. increasing the current. 3. Decreasing the space between Magnets
Explanation:
Brainiest
The changes that make the motor stronger will be using strong permanent magnets, increasing the current, and decreasing the space between magnets.
What is an electric motor?An electric motor is a mechanism that turns electricity into mechanical energy.
The interaction between the motor's magnetic field and electric current in a wire winding generates force in the form of torque imparted to the motor's shaft in most electric motors.
An electric generator is physically equivalent to an electric motor, but it converts mechanical energy into electrical energy using a reversed flow of power.
When string magnets are used, a strong flux is produced, and the motor becomes more powerful. Internal flux has a significant impact on coil strength.
Increasing current results in greater power. In the same way, shortening the distance between magnets makes the motor stronger by increasing flux and torque.]
Hence the changes that make the motor stronger will be using strong permanent magnets, increasing the current, and decreasing the space between magnets.
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in a railyard a train is being put together from freight cars.An empty freight car coasting 10 m/s strikes a loaded car that is stationary and the cars couple together. Each of the cars Haas a mass of 3000kg when empty and the loaded car contains 12000kg of canned soda . with what speed does the combination of the two cars start to move?
Answer:m1v1 + m2v2 = (m1f + m2f)vf. 3000kg(10.0m/s) + (15000kg)(0.0m/s) = (18000kg)(vf).
Explanation:
If we say that a galaxy has a lookback time of 1 billion years, we mean that _________.
If we say that a galaxy has a lookback time of 1 billion years, we mean that its light traveled through space for 1 billion years to reach us.
have a great day!
What happens if you suspend a bar magnet so that it can swing freely.
How long is a wave that has a frequency of 2.70X102 Hz and is moving through copper at 3560 m/s?
The wavelength of a wave that has a frequency of 2.70X102 Hz and is moving through copper at 3560 m/s is 13.19m.
How to calculate wavelength?The wavelength of a wave can be calculated using the following formula:
λ = v/f
Where;
λ = wavelength (m)v = speed (m/s)f = frequency (Hz)According to this question, a wave has a frequency of 2.70X10² Hz and is moving through copper at 3560 m/s. The wavelength is calculated as follows:
λ = 3560/270
λ = 13.19m
Therefore, the wavelength of a wave that has a frequency of 2.70X102 Hz and is moving through copper at 3560 m/s is 13.19m.
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If a bar magnet's nuetral region is broken in two, what will most likely occur?
Answer:
If a bar magnets neutral region is broken into two, the newly cut faces will become the new north or south poles of the smaller pieces.
Answer:
Explanation:
You will create two separate bar magnets. Let's say we have a bar magnet with a north pole at the top region, and a south pole in the bottom region. The magnetic field lines will run from the north pole to the south pole. If the bar magnet were broken into the two, the portion containing the north pole will now have a south pole at the point where it was broken. Similarly, the section containing the south pole will have a north pole at the point where it was broken.
The reason for this is because magnetic monopoles do not exist. There are electric monopoles, those are called electrons. But there are no magnetic monopoles. There is no such thing as a magnetic charge. Mathematically, this is captured in Maxwell's equations. The divergence of the magnetic field is always zero, which means there is no such thing as a magnetic monopole. There is nothing theoretically stopping a magnetic monopole from existing. A lot of theories actually favor it. We just have no proof of it, so we assume they dont exist.
Individuals suffering from somatoform disorders often see several doctors about their symptoms because __________. a. doctors often refer their patients for a second opinion b. their symptoms often fall under several specialties c. doctors get frustrated with them and refuse to treat them d. they are looking to find a doctor to give them a diagnosis please select the best answer from the choices provided a b c d
Individuals suffering from somatoform disorders often see several doctors about their symptoms because doctors often refer their patients for a second opinion
What is doctors opinion?Doctors usually ask people to take different medications to be able to treat the cause and the symptoms of a disease.
For example, they might prescribe antibiotics to treat the infection and anti-inflammatory medication for the swelling and pain.
According to this, the statement that says that doctors often advise a combination of treatments to eradicate an infection and treat symptoms is true.
Hence Individuals suffering from somatoform disorders often see several doctors about their symptoms because doctors often refer their patients for a second opinion
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Answer:
D - they are looking to find a doctor to give them a diagnosis
Explanation:
just took the test
If a rock falls from a cliff, at what point are its kinetic energy and its potential energy the same? Ignore air resistance.
Answer:
The gravitational potential energy it had from being above the ground is converted to kinetic energy as the rock falls. As kinetic energy increases, the velocity of the rock will also increase.
Explanation:
Which of these is evidence of global warning?
A) Rising global temperatures
B) An overall decrease in sea levels
C) Stable precipitation patterns
D) An increase in the size of glaciers
Answer:
D
Explanation:
because the glaciers melt adding more water into the sea which make the sea levels rise.
How much energy is given to each coulomb of charge that flows through a 1. 5-v battery?.
Answer:
1.5 jouls for 1 coulomb
Explanation:
energy(U)=charge(q)*potential(V)
so U for 1 coulomb U=1*1.5=1.5 jouls
and for 1 electron U=(1.6*10^(-19))*1.5= 2.4*10^(-19) jouls
Think about the process of pulling down the spring and letting it go. For this event, list each form of energy associated with the spring and the weight. (Hint: Use the Energy Graph.)
Answer:
gravitational 2.force of gravityExplanation:
1.it ocours when an object is thrown into the sky. 2.iy ocurs when an object is falling or being pulled from the sky
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1. What is the name of the process taking place in the diagram? Describe the process.
sents a
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2. What is an ion?
Charged particle that has greater or fewer electrons than protons.
3. What is the solute in the diagram? Is the solute an electrolyte or a nonelectrolyte?
am
of three...
4. Will the solution conduct electricity? Explain.
Answer:
1) Ionization takes place as the Hydrochloric acid, a strong acid, ionizes completely in water to form the hydronium and chlorine (Cl−) ions
3) Water -- non electrolyte
4) it can conduct electricity because it forms ions
I hope my answer helps you.
What would happen to jupiter if we could somehow double its mass?.
Answer:
G M m / R^2 attraction of Jupiter to sun where m is mass of Jupiter
m V^2 / R centripetal force acting on Jupiter
R = G M / V^2
The radius would be unchanged, and its orbit would be unchanged
City leaders in a mid-sized city want to decrease carbon dioxide emissions associated with transportation in the
city.
Which two practices would most likely result in a decrease in carbon dioxide emissions?
Increase the fare for riding on buses.
Widen highways to allow for more cars.
Use electric buses instead of buses that use diesel fuel.
Increase the number of taxis allowed to operate in the city.
Provide community-owned bicycles to residents to use on errands.
The two practices are;
Use electric buses instead of buses that use diesel fuelProvide community-owned bicycles to residents to use on errands.Carbon dioxide emissionThe carbon dioxide emission results from the combustion of fossil fuels such as petrol, coal, firewood etc.
How to reduce carbon dioxide emissionCarbon dioxide emission can be reduced through the following practices;
The use of electric cars The use of solar energy to power our housesThe use of hydrogen fuel, etcThus, the two practices would most likely result in a decrease in carbon dioxide emissions are;
Use electric buses instead of buses that use diesel fuelProvide community-owned bicycles to residents to use on errands.Learn more about carbon dioxide emission here: https://brainly.com/question/11383616
How does nuclear fusion differ from nuclear fission
Answer:
They are the polar opposite of each other.
How?Nuclear fusion is when two or more atomic nuclei combine together to form a different atomic nuclei. Nuclear fission is when the atom splits into two smaller nuclei.
6. Aste owing questions 1. Answer question i and ii based on the information given below. In biology laboratory, Tashi observed a cell under a microscope. While on the cell, his attention was drawn to a tiny star like close to a large dense spherical body at the centre. He also observer many rod shaped structures scattered inside the cell. (i) Identify the cell organelles observed by Tashi. body a (ii) Is it a plant cell or an animal cell? 3. Study the diagram of a cell in Figure 1.8 and answer the following questions. i. In which group of organisms would you find this cell? Give reasons to support your answer. ii. Name the parts labelled A, B, C, and D. B TO D
The cell is an animal cell and the rod-shaped structures in the cell are mitochondria.
What are cell organelles?Cell organelles are membrane-bound structures found within the cell of eukaryotes which carry out specific functions in the cell.
Some cell organelles include:
mitochondria ribosomes Golgi bodies endoplasmoc reticulumThe rod-shaped structures in the cell are mitochondria.
Asters are star-shaped structures found within the cell which are found close to the nucleus d
at the early mitosis in an animal cell.
Asters do not form during mitosis in plants.
Therefore, the cell is an animal cell and the rod-shaped structures in the cell are mitochondria.
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Gasses and plasma are called bank because their shape is always changing
Answer:
It is because gasses, liquids, and plasma are always changing shape they are named and classified as ‘fluid’.
Is the sun making the side walk a chemical or phsical change
Answer: it is chemical .
Explanation: because chemical change that results in the formation of new chemical substances. During the sun tanning, both vitamin D and melanin are produced. your welcome <3 .
If the pressure exerted by the liquid of density 500kg/m3 is 20,000Pa. What is height of liquid column.
The height of the liquid column is 4.08 metres.
The peak of the liquid column is 4.08 metres.
What's strain exerted with the aid of a liquid?As we realize that any liquid exerts a strain at a factor relies upon on the density of the liquid and the vertical intensity. depth is given = h and the acceleration because of gravity is g.
calculation:-
pressure = ρgh
ρ = density of the liquid
g = accaleration due to gravity
h = depth from the surface
l = 500kg/m3
p = 20,000
g = 9.8 ms-2
20,000Pa= 500*9.8*h
h=4.08m
What's the stress density?The stress is the measure of pressure acting on a unit region. Density is the measure of the way intently any given entity is packed, or it is the ratio of the mass of the entity to its extent. The relation between strain and density is direct. exchange in stress will be contemplated in a exchange in density and vice-versa.
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Which of the following is not true about tectonic plates
Answer:
Scientists have identified about a dozen major and several minor tectonic plates
Two identical (same mass and shape) balls of clay are flying through the air. Ball A is
moving to the right at 4 m/s, while ball B is moving left at 6 m/s. They collide in a
perfectly inelastic collision. What is the velocity of the resulting mass (positive is to
the right)?
Answer in units of meters/second (m/s)
The velocity of the resulting mass after the perfectly inelastic collision of identical balls of clay A and B is 1 m/s to the left.
Conservation of linear momentum
The final velocity of the two identical balls is determined by applying the principle of conservation of linear momentum as shown below;
m₁u₁ + m₂u₂ = v(m₁ + m₂)
where;
u₁ is the initial velocity of ball Au₂ is the initial velocity of ball Bv is the final velocity of both balls after collisionm₁ and m₂ are masses of the two ballsm₁ = m₂ = m
let right direction = positive direction
let left direction = negative direction
m(4) + m(-6) = v(m + m)
4m - 6m = 2mv
-2m = 2mv
v = -2m/2m
v = - 1 m/s
Thus, the velocity of the resulting mass after the perfectly inelastic collision of identical balls of clay A and B is 1 m/s to the left.
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Please help answer the following questions ASAP
Answer:
renewable are fuels that can be reused while non renewable are fuels that can not be used again
Describe the rise and fall of a basketball using the concepts of kinetic energy and potential energy.
Answer:
in the beginning the kinetic energy is at a maximum level because the starting velocity is high comparatively.. and because of the gravitational acceleration acting on the ball in the opposite direction the kinetic energy drops proportionally because of the velocity drop. after the ball reaches it's maximum height the potential energy of the ball is high because of the height.. and again the kinetic energy starts to build because the ball again starts to fall down..
Explanation:
Hope this was helpful
Which of jupiter’s moons is the largest moon in the solar system?.
Answer:
Ganymede
Explanation:
Jupiter’s Moon Ganymede is the largest Moon in the solar system. It’s even larger than the planet Murcury.
I hope it helps! Have a great day!
Muffin ^^
Answer:
Ganymede
Explanation:
The largest moon is Jupiter’s moon, Ganymede. It is the largest out of all the moons we have in our solar system.
I hope it helps! Have a great day!
.-.
