uld
result in the same current as you'd get from two
12- resistors connected in series to the same
battery? (In other words, what is the equivalent
resistance of a pair of 12- resistors connected in
series?)
2. What is the equivalent resistance of a 6- and

Answer:

velocity= 135m/s

Explanation:

velocity = 300×0.45

= 135m/s²

Answer:

A. White light is the absence of all color.

Explanation:

It is false that white light is the absence of all color. In fact, white light is the presence of all colors in the spectrum.

Electromagnetic waves are waves that do not require any material medium for propagation. It is the interaction of electric and magnetic fields.

Answer:

A:75 seconds

Explanation:

1.5 km/72 km/h = 0 0208 h = 1.25 minutes = 75 seconds

Many electrical appliances and circuits are earthed in order to prevent electrocution.

Electrocution is defined as the outcome of an electric shock that occurs when electric current with high voltage passes through the body of a living organism.

The clinical manifestations of electrocution include the following:

When electrical appliances and circuits are constructed, a pathway for a faulty current to flow to the earth is mare to prevent electric shock which may lead to an electrocution.

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When conducting an experiment, researchers need to be aware of the ethics, or rules of conduct recognized in respect to the rightness or wrongness of certain actions on subjects.

The moral standards that should guide how researchers do their job are known as research ethics. These values guide the creation of research laws that have been approved by organisations like university governing bodies, local communities, or governments. All researchers are expected to abide by any rules that may be relevant to their work.

A collection of rules that guide your study designs and procedures are known as ethical concerns in research. Voluntary engagement, informed permission, anonymity, secrecy, the possibility of damage, and outcomes communication are some of these principles. Therefore, option (B) is correct.

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This indicates that in order to reduce reverberation and control the flow of sound, the walls have been reinforced with specific materials, such as foam or fabric.

Acoustic remedies primarily consist of foam. This is due to the fact that open cell foam stops sound from reflecting off of solid objects. The studio's proximity to adjacent rooms also reduces outside noise.

To reduce fuzzy background noise, absorb echoes, and produce excellent sound clarity for the sounds you are trying to record, acoustic sound panels can be put on the walls or ceiling of your studio.

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la característica de los elementos

Answer:

They transmit by vibration through mediums such as air.  So #3 is most logical answer.

Explanation:

It is in fact vibration of air (sound waves) which is transformed by the tympanic membrane in the ear of human to audible sounds.

++++++++++++++++++++++++++++++++++++++++++++++

Sound travels slower than light

Move faster in water than air.

Wind blowing through leaves and other objects creates sounds.

Answer:

(Question) Which type of wave needs a medium to travel?

(Answer) sound waves, because they travel by oscillating molecules

(Question) What do both sound and light waves transfer?

(Answer) energy

(Question) How does an increase in amplitude affect sound and light waves?

(Answer) louder sound and brighter light

(Question) What happens to the wavelength when the frequency increases?

(Answer) The wavelength decreases.

(Question) Which of the following is true about sound waves?

(Answer) Sound moves faster in the ocean than in the air.

Explanation:

i just did the quick check

Answer:

It will be B

Explanation:

Answer:The answer is B

Answer:

the faster you move the greater, the drag force acting against the object.

Explanation:

Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Also remember to rate answers to help other students, While leaving thanks to answers that help you. Have a great day!

Answer:

Explanation:

If angle of incidence and angle of refraction be i   and r respectively ,

sini / sinr = μ ( refractive index )

sin r = sin i / μ

If angle of incidence i be constant and medium becomes denser that means μ becomes higher in value , the value of sin r will be low ( because of increase in value of denominator )

As sin r decreases , r also decreases also.

Hence when medium becomes denser , angle of refraction becomes less .

The volume of the bubble just before the surface is 4 cm^3.

V1=volume of the initial stage

P2= pressure at the final stage

V2= volume at the final stage

=(1×4)/1

=4cm³

Thus , we can conclude that the volume of the bubble just before the surface of water is 4cm³.

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The power delivered by both secondary coils A and B is the same (P_A = P_B), the comparison shows that the power delivered by secondary coil A is equal to the power delivered by secondary coil B.

Transformer A has a primary coil with 400 turns and a secondary coil with 200 turns. Transformer B has a primary coil with 400 turns and a secondary coil with 800 turns. The same current and voltage are delivered to the primary coil of both transformers, and the secondary coils are connected to identical circuits.

Step 1: Calculate the turns ratio for each transformer.
Transformer A:

Turns ratio (N) =

\(= N_{secondary} / N_{primary\)

= 200 turns / 400 turns

= 0.5
Transformer B:

Turns ratio (N)

= \(N_{secondary} / N_{primary\)

= 800 turns / 400 turns

= 2

Step 2: Determine the voltage and current ratios.
For transformers, the voltage ratio (V) and the current ratio (I) are inversely proportional to the turns ratio.
Transformer A:

Voltage ratio (V_A)

\(= N_A = 0.5,\)

Current ratio (I_A)

\(= 1 / N_A = 2\)
Transformer B:

Voltage ratio (V_B)

\(= N_B = 2,\)

Current ratio (I_B)

\(= 1 / N_B = 0.5\)

Step 3: Calculate the power delivered by the secondary coils.
Power (P) = Voltage (V) × Current (I)
For Transformer A:

\(P_A = V_A \times I_A \\= 0.5 \times 2 = 1\)(relative value)
For Transformer B:

\(P_B = V_B \times I_B \\= 2 \times 0.5 = 1\)(relative value)

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The acceleration of the object would be found to stay the same.

Let us note that the acceleration would have to do with the rate at which the velocity of the object would change with time. In the case that we have here, we can see that there is a point where the net force is the same as we can see on the graph.

We know that it is a change in the net force that is acting on the object that would cause the object to be accelerated as such if the net force stays as a constant then the acceleration of the object would also stay the same.

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The position of the ball after 3.0 s, in meters is 38.1.

Given data: Initial velocity u = -2.0 m/s, Height h = 15 m, Time t = 3.0 s, Acceleration due to gravity g = 9.8 m/s². Position of the ball after 3.0 s, in meters can be calculated as follows:

Let's calculate the final velocity of the ball vf using the below formula:

v = u + gt …

(1)Substitute the given values in equation

(1),v = -2.0 + (9.8 × 3.0)

= 27.4 m/s

We know that the acceleration of the ball is acting in the downward direction. Therefore, the velocity of the ball is also in the downward direction. Hence, the value of v will be negative.Let's calculate the position of the ball after 3.0 s using the below formula:

s = ut + ½gt² …

(2)Substitute the given values in equation

(2),s = -2.0 × 3.0 + ½ × 9.8 × (3.0)²

= -6.0 + 44.1

= 38.1 m

The position of the ball after 3.0 s, in meters is 38.1 meters.

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Answer:

Hydrogen and Helium

Explanation:

The abundance of chemical elements in the universe was made up of large amounts of these 2 gases, the rest made up only about 2% of the universe. Which were produced mostly by supernovae and certain red giant stars

Answer: Inertia is an object’s resistance to a change in its motion. The greater the mass of an object, the greater the force needed to move it or stop it from moving.

Explanation: Hope this was helpful

The chance that the detector will find a particle in the ground state of the square well if the detector is centered on the midpoint of the well is 40.5%.

The chance that the detector will find a particle in the ground state of the square well if the detector is centered on a point one-fourth of the way across the well is 10.1%.

Assuming that the particle detector can only detect particles within a certain range, the probability of detecting a particle in the ground state of an infinite square well depends on the position of the detector within the well.

The probability density function for the ground state of an infinite square well is given by:

P(x) = (2/L)sin^2(nπx/L)

where L is the width of the well and n is the quantum number (in this case, n = 1 for the ground state).

A. If the detector is centered on the midpoint of the well, the probability of detecting a particle in the ground state is simply the integral of the probability density function over the entire width of the well, divided by the width of the range that the detector can detect:

P1 = (1/15%) * ∫[L/2 - (L/2)δ, L/2 + (L/2)δ] P(x) dx

where δ = 0.5 is a factor that accounts for the fact that the detector is centered on the midpoint of the well.

Evaluating the integral and simplifying, we get:

P1 = 4/π^2 = 0.405

Therefore, the chance that the detector will find a particle in the ground state of the square well if the detector is centered on the midpoint of the well is 40.5%.

B. If the detector is centered on a point one-fourth of the way across the well, we need to adjust the probability density function accordingly. Using the same approach as before, the probability of detecting a particle in the ground state is:

P2 = (1/15%) * ∫[L/4 - (L/4)δ, L/4 + (L/4)δ] P(x) dx

where δ = 0.25 is a factor that accounts for the fact that the detector is centered on a point one-fourth of the way across the well.

Evaluating the integral and simplifying, we get:

P2 = 1/π^2 = 0.101

Therefore, the chance that the detector will find a particle in the ground state of the square well if the detector is centered on a point one-fourth of the way across the well is 10.1%.

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Answer:

Work done,W= 250J

Displacement , s = 60

We know that, Work done = Force x displacement

i.e , W = Fxs

250 J = F x 60m

F = 250/60

=4.16 N

Hence , 4.16 N of Force is applied on the body.

Please find attached photograph for your answer.

Hope it helps.

Do comment if you have any query.

Answer:

2 steps

Explanation:

:)

this makes basketball interesting

Answer:

2 steps tops. If it is more that is called "traveling".

Explanation:

There are roughly \(10^{26\) photons in a beam of light with an energy of 100 J and a wavelength of 300 nm.

To calculate the approximate number of photons in a beam of light, we can use the equation relating energy (E) to the frequency (f) or wavelength (λ) of a photon:

E = hf = hc/λ

Where:

Given the energy of the beam of light (Ebeam = 100 J) and the wavelength (λ = 300 nm = 300 x \(10^{-9\) m), we can rearrange the equation to solve for the number of photons (N):

N = Ebeam / E

Let's calculate the number of photons using the given values:

E = hc / λ

 ≈ (\(10^{-33\) J.s) * (3 x \(10^8\) m/s) / (300 x \(10^{-9\) m)

≈ \(10^{-33\) J.s * \(10^9\) / 3

≈ \(10^{-24\) J

N = Ebeam / E

   = 100 J /  \(10^{-24\) J

  ≈ \(10^{26\) photons

Therefore, there are roughly \(10^{26\) photons in a beam of light with an energy of 100 J and a wavelength of 300 nm.

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The car must start at a height of approximately 127.55 meters on the hill in order to achieve a speed of 50 m/s at the bottom, assuming it is engineless and resistance-free.

To determine the height on a hill at which an engineless, resistance-free car must start in order to achieve a speed of 50 m/s at the bottom, we can use the principle of conservation of mechanical energy.

According to this principle, the sum of the potential energy and the kinetic energy of an object remains constant in the absence of external forces.

At the top of the hill:

The car has only potential energy (PE) due to its height above the bottom.

At the bottom of the hill:

The car has both potential energy and kinetic energy (KE).

Since the car is engineless and resistance-free, we can neglect any energy losses due to friction or air resistance.

The total mechanical energy (E) at the top of the hill is equal to the total mechanical energy at the bottom of the hill:

Etop = Ebottom

The potential energy (PE) at the top of the hill is given by the formula:

PE = m * g * h

Where m is the mass of the car, g is the acceleration due to gravity, and h is the height of the hill.

The kinetic energy (KE) at the bottom of the hill is given by the formula: KE = (1/2) * m * \(v^{2}\),

Where v is the speed of the car at the bottom.

Therefore, we have:

PEtop = KEbottom

m * g * h = (1/2) * m * \(v^{2}\)

We can cancel out the mass (m) from both sides of the equation:

g * h = (1/2) * \(v^{2}\)

Now, we can solve for the height (h):

h = (1/2) * \(v^{2}\) / g

Substituting the given values:

v = 50 m/s (speed at the bottom)

g = 9.8 m/\(s^{2}\) (acceleration due to gravity)

h = (1/2) * \((50 m/s)^2\) / (9.8 m/\(s^{2}\))

h = 127.55 m

Therefore, the car must start at a height of approximately 127.55 meters on the hill in order to achieve a speed of 50 m/s at the bottom, assuming it is engineless and resistance-free.

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Answer:

the SI unit of work or energy, equal to the work done by a force of one newton when its point of application moves one meter in the direction of action of the force, equivalent to one 3600th of a watt-hour.

Explanation:

Joule, unit of work or energy in the International System of Units (SI); it is equal to the work done by a force of one newton acting through one metre. Named in honour of the English physicist James Prescott Joule, it equals 107 ergs, or approximately 0.7377 foot-pounds.

If the current in a long straight wire is increasing, the current is induced in the circular loop will be generated in the nearby circular loop.

Faraday's Law states that the electromotive force (EMF) induced in a circuit is proportional to the rate of change of magnetic flux passing through it. As the current in the straight wire increases, the magnetic field around it strengthens, and the change in magnetic flux through the circular loop causes an induced current. The direction of this induced current is determined by Lenz's Law, which states that the induced current will flow in such a way as to oppose the change in magnetic flux causing it.

In this case, as the magnetic field due to the straight wire increases, the induced current in the circular loop will flow in a direction that generates a magnetic field opposing the increase in the straight wire's magnetic field. The magnitude of the induced current depends on the rate of change of the magnetic field, the loop's size, shape, and distance from the straight wire, as well as the resistance of the loop's material. If the current in a long straight wire is increasing, the current is induced in the circular loop will be generated in the nearby circular loop.

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Answer:

105N

Explanation:

force = mass x acceleration

force without the 25N = 40 x 2

= 80N

On top of this, he has to counteract the 25N so the actual force is 80N + 25N which is 105N

It took 2.04 seconds for the rock to reach the ground, after it was thrown vertically downward at a velocity of 15.0 m/s.

What is velocity?

Velocity is a vector quantity that describes the rate of change of an object's position in a specific direction. It is defined as the distance an object travels per unit of time. The standard unit of velocity is meters per second (m/s) in the International System of Units (SI).

To determine how long it took for the rock to reach the ground, we can use the equation:

d = v0t + (1/2)gt^2

Where d is the distance traveled, v0 is the initial velocity (which is zero for a rock that is thrown vertically downward), t is the time, and g is the acceleration due to gravity (approximately 9.8 m/s^2).

Since we know the distance traveled and the final velocity of the rock, we can rearrange the equation and solve for t:

t = (2d / g)^1/2

Plugging in the given values:

t = (2 * 10 m / 9.8 m/s^2)^1/2 = (2 * 10 / 9.8)^1/2 = 2.04 s

Therefore, it took 2.04 seconds for the rock to reach the ground, after it was thrown vertically downward at a velocity of 15.0 m/s.

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Answer:

Explanation:

1. He had the opportunity to have a chance of doing experimental research where he began to develop a theory on electromagnetism. He was then recognized in 1884 and appointed to chair of physics at Cavendish Laboratory. In 1914 there was a new type of physics that lead to more questions than there were answers for and that is when Thomson began associating himself with this new type of physics.

2. Thomson began experimenting with the cathode ray tubes that showed him that all atoms contain small negatively charged particles/electrons. His proposition to the atom was shown with is plum pudding model, which showed negatively charged electrons that were embedded in a positive charge. His discovery came before the discovery of the atomic nucleus that would be included in the electron in the atomic model.

3.His contributions to the atomic model include that all matter is made of atoms, atoms are invisible and indestructible, all atoms in a certain element are identical, two or more atoms that are combined form a compound, and a chemical reaction is the rearrangement of the atoms. His ideas of the atomic model that do not exist in the modern day atomic model include the fact that the distribution of the negative and positive particles was not uniform.

Websites:

https://socratic.org/questions/why-was-j-j-thomson-wrong

https://www.khanacademy.org/science/ap-chemistry/electronic-structure-of-atoms-ap/history-of-atomic-structure-ap/a/discovery-of-the-electron-and-nucleus#:~:text=Summary-,J.J.,positively%2Dcharged%20%22soup.%22

Answer:

balance, eyes, elbow in, follow-through

Explanation:

Answer:

2. Ahead of the package

Explanation:

The plane is going straight without stopping while the package is going straight down.