A baby's mouth is a distance of 35 cm from her father's ear and a distance of 1.60 m from her mother's ear. What is the difference between the sound intensity levels heard by the father and by the mother? Express your answer using two significant figures. βfather−βmother=？

Answer:

The ball has a potential energy of 53 J.

Explanation:

Mechanical energy, E = Kinetic energy + Potential energy

E = K.E + P.E

65 = 12 + P.E

P.E = 65 – 12

P.E = 53 J

Therefore the potential energy of the ball is 53 J

Answer:

53

Explanation:

on e2021

Detailed explanation of sound localization:

1. Binaural Hearing: One of the primary mechanisms of sound localization is binaural hearing, which involves using both ears to perceive sound. Each ear receives sound waves at slightly different times and with slightly different intensities and frequencies, depending on the sound source's location relative to the listener.

2. Interaural Time Difference (ITD): The time difference between when a sound reaches one ear compared to the other ear provides information about the sound source's horizontal position. If a sound is coming from the right side, it will reach the right ear slightly before reaching the left ear. The brain processes this time delay to determine the direction of the sound source.

3. Interaural Level Difference (ILD): The intensity or volume of a sound can also differ between the ears due to the distance between the sound source and each ear. The brain analyzes these intensity differences to help determine the sound source's lateral position.

4. Head-Related Transfer Function (HRTF): The unique shape of our ears and the structure of our head create subtle modifications to the sound waves as they enter our ears. These modifications, known as the head-related transfer function, provide additional cues for sound localization. They help us perceive the elevation or vertical position of a sound source.

5. Auditory Processing: The brain integrates the inputs from both ears, along with other contextual cues, to accurately determine the direction and location of a sound source. It combines the information from ITD, ILD, and HRTF to create a spatial map of sound in our auditory perception.

Overall, sound localization is a remarkable ability that allows us to identify the direction and location of sounds in our environment. It relies on the complex interplay between our ears, brain processing, and contextual cues to provide us with a rich auditory experience and helps us navigate our surroundings and respond to auditory stimuli effectively.

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Answer:

The answer is E

Explanation:

Wolves died off from the rona virus back in the 1930s so when they came back they brought C- 19 with them

Explanation:

0.930kg/m^3+1.29kg/m^3=2.220kg/m^3

Answer:

true

Explanation:

you don't need an explanation

Answer:

I'm not positive but I think the answer is Yes, because both scientific laws and theories are based on evidence.

Explanation:

Sorry I don't have notes on this, hope this helps! :)

The processes under chemical change are: cooking an egg, fireworks exploding, and rusting of a metal tool.

The processes under physical change are: melting ice, evaporating puddle of water, and dissolving of salt in water.

Given:

The following process:

To find:

The classify the processes in whether it does or does not produce a new substance.

Solution:

Chemical change, due to change in atomic arrangement egg get solidified on cooking, a new substance is formed.

Physical change, change in the state of matter is taking from solid to liquid, no new substance is formed.

Chemical change. formation of carbon dioxide gas and sound energy, anew substance formed

Physical change, change in the state of matter is taking from liquid to gas, no new substance is formed.

Chemical change, formation of oxides on the surface of the metal tool due to reaction between air and metal, a new substance is formed.

Physical change, ions of salt in the solid state are changing into aqueous ions with no formation of new substance, no new substance is formed.

The processes under chemical change are: cooking an egg, fireworks exploding, and rusting of a metal tool.

The processes under physical change are: melting ice, evaporating puddle of water, and dissolving of salt in water.

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Answer: \(30.09\times 10^{-15}\ C\)

Explanation:

Given

The first charge is \(q_1=-6\ C\)

Attraction force \(F=65\ N\)

the second charge is at \(0.005\ m\) away

Suppose the second charge is \(q_2\)

The electrostatic force is given by

\(F=\dfrac{kq_1q_2}{r^2}\)

Insert the values

\(65=\dfrac{9\times 10^9\times 6\times q_2}{[5\times 10^{-3}]^2}\\\\\Rightarrow q_2=\dfrac{65\times 25\times 10^{-6}}{54\times 10^9}\\\\\Rightarrow q_2=\dfrac{1625\times 10^{-6-9}}{54}\\\\\Rightarrow q_2=30.09\times 10^{-15}\ C\)

Answer:

1.775 is the answer

Explanation:

We can figure out the index of refraction of the sapphire by using the following equation n = c/v

n  =  index of refraction

c  =  speed of light in a vacuum

v  =  speed of light traveling in medium

Step 1 :

v = 1.69 × 10^8

c = 3 × 10^8

Step2: Substitute values

n = c/v -----> n = 3 × 10^8 / 1.69 × 10^8 = 3/1.69 = 1.775

Index of refraction of sapphire is 1.775

The electric flux density is given as Dx(x, y) = \(4(x + y) C/m^2$ and Dy(x, y) = (3x - y) C/m^2.\) Using Gauss's Law, the price density ρv is discovered to be ε * 3.

The general charge enclosed in a cube may be calculated by integrating ρv over the quantity of the cube. The critical form of Gauss's Law relates the electric flux Φ thru a closed surface to the overall charge Q enclosed.

To clear up the hassle, we will use the differential and indispensable varieties of Gauss's Law. Let's pass step by step:

a) Using the differential form of Gauss's Law, which states that the divergence of the electric flux density (D) is identical to the charge density (ρv) divided by using the permittivity of the medium (ε):

∇ · D = ρv / ε

Given the electric flux density components:

\(Dx(x, y) = 4(x + y) C/m^2\\Dy(x, y) = (3x - y) C/m^2\)

We can discover the fee density ρv by means of taking the divergence of D:

∇ · D = ∂Dx/∂x + ∂Dy/∂y

∂Dx/∂x = 4

∂Dy/∂y = -1

∇ · D = 4- 1 = 3

Therefore, ρv = ε * (∇ · D) = ε * 3

b) To discover the whole fee Q enclosed within the dice, we want to integrate the fee density ρv over the volume of the dice. Since the cube has a side length of 2 m and is placed in the first quadrant with one nook at the foundation, its volume is \((2 m)^3= 8m^3\). Thus:

Q = ∫∫∫ ρv dV

Q = ∫∫∫ ε * 3 dV

Q = ε * 3 * ∫∫∫ dV

Q = ε * 3* (extent of the cube)

Q = ε * 3* 8m³

c) Using the fundamental form of Gauss's Law, which states that the electrical flux (Φ) through a closed floor is equal to the entire charge (Q) enclosed divided with the aid of the permittivity of the medium (ε):

Φ = Q / ε

We can rewrite this equation as:

Q = Φ * ε

To discover the electric flux Φ, we want to assess the floor essential of the electric flux density (D) over a closed surface enclosing the dice. Since the electric flux density is given, we are able to calculate:

Φ = ∫∫ D · dA

wherein dA is a vector detail of the floor place.

Finally, we can calculate the total charge Q the usage of Q = Φ * ε.

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Explanation:

you can see this example to undersranding the question

The reason padded dashboards are used in cars is that they a.) change the impulse in a collision. Therefore option a) is correct.

Padded dashboards make automobiles safer as they increase the time taken to decrease the momentum of impacting body to zero, which also decreases the impact. Therefore, force acting on the padded dashboards is small.

If the driver or passenger hits the dashboard, then the force and time required to stop the momentum is exerted by the dashboard. Padded dashboards serve to extend the time duration of the impact, hence minimizing the effect of the force.

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Answer:

Percent Error  =  67.86%

Explanation:

The percent error can be calculated using the following equation:

                              | measured value - true value |
Percent Error  =  -------------------------------------------------  x 100%
                                              true value

In this equation,

---> The "measured value" is the value found after performing an experiment.

---> The "true value" is the value you expect to find after performing an experiment.

In this case,

---> measured value = 4.5 g/cm³

---> true value = 14.0 g/cm³

                              | 4.5 g/cm³ - 14.0 g/cm³ |
Percent Error  =  ----------------------------------------  x  100%     <----- Insert values
                                         14.0 g/cm³

                               | -9.5 g/cm³ |
Percent Error  =  ------------------------  x  100%                 <----- Subtract
                                 14.0 g/cm³

                                  9.5 g/cm³
Percent Error  =  ------------------------  x  100%                 <----- Take absolute value
                                 14.0 g/cm³

     
Percent Error  =  0.6786  x  100%                                 <----- Divide

Percent Error  =  67.86%                                              <----- Multiply
                                 

The resistor of the electric lamp is marked at 240 volts and 60 watts is 960 ohms. Thus, option D is correct.

The resistance is a property that gives obstruction the current flow.  It blocks the current flow in the circuit. The unit of resistance is the ohm.    

From the given,

The voltage of the electric lamp (E) = 240 volt

Power in the circuit (P) = 60 watt

Resistance =?

Power (P) = E² / R

R = E²/P

   = 240×240/60

  = 960 Ω

The resistance of the electric lamp with a given voltage and power is 960 Ω. Thus, the ideal solution is D.

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The expression for the charge on a capacitor can be expressed as Q = C × V, where Q is the charge, C is the capacitance, and V is the potential difference. A capacitor is charged to a potential difference V when a charge Q is stored on its plates.

Let’s solve this problem using the above equation.  We can calculate the charge on the capacitor in the given problem using the below equation Q = C × V Where Q = charge on the capacitor = ?C = capacitance = 4 µF = 4 × 10⁻⁶FV = potential difference across the capacitor = emf of battery = 120 VQ = C × V = 4 × 10⁻⁶ × 120= 0.00048 C or 480 µC Therefore, the magnitude of the charge on the capacitor is 480 μC.Option C is correct.

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Hund's rule allows us to find that the number of combined mismatched electrons is 12

Hund's rule is which configuration has the lowest energy in a system, so this must be met

In this case the number of sublevel of the  d orbital where they fit

           # sublevels = 2 d + 1

           # sublevels = 2 2 +1

           # sublevels = 5

Each sublevel fits two electrons according to the Pauli principle, which establishes that all quantum numbers in a novel cannot be the same.

Let's distribute the electrons at each level

level        electrons

3d             ½ ½ ½

4d          ½ ½ ½ ½

5d      ½ ½ ½ ½ ½

Where there is a single electron in each sublevel according to Hund's principle

In conclusion using Hund's rule we can find that the number of combined unpacked electrons is 12

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Answer:15

Explanation: I have the same college class is based on hunds rule

Explanation:

Let's assume the 1D is along x - axis.

Then, the object can move in two directions, along +x axis or - x axis, depending upon reference point .

Yes, it can be still, speed up and slow down.

Answer:

When the acceleration of the elevator is going upward, the rider experiences a sensation of being heavier than his normal weight due to the upward normal force being more than the rider's weight.

When the elevator is accelerating downward, the person feels lighter due to the downward normal force being less than the person's weight.

A person riding in an elevator subjected to a series of unbalanced forces depending on the direction the elevator is travelling.

Two forces are acting on the person, the force of gravity and the upward normal force from the elevator.

When the elevator is going upwards with acceleration a, the person feels heavier than his normal weight, due to the upward normal force being greater than the person's weight.

N = mg + ma

When the elevator is moving downwards with acceleration a, the person feels lighter due to the downward normal force being less than the person's weight.

N = mg - ma

However, when the elevator is moving up or down at constant velocity ie. acceleration a = 0, the person experience a normal force equal to weight.

N = mg

When the elevator is moving downwards with acceleration a = g, the person experiences weightlessness.

N = (mg - mg) = 0

When the elevator is accelerating downward, the person feels lighter due to the downward normal force being less than the person's weight.

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Answer:

because of tungsten's high melting point

Explanation:

The length of the spring in equilibrium is l = l0 +(mgsin(theta)/k in terms of the given quantities

a) The length of the spring in equilibrium can be calculated using the spring's force equation, F = -k(l-l0).The force exerted by gravity on the cart is mgsin (theta), which must be equal to the force exerted by the spring in order to achieve equilibrium. Setting these two forces equal to each other and solving for l gives:

l = l0 +(mgsin(theta)/k

b) When the cart is released from rest, it will have potential energy stored in the spring. This potential energy can be converted into kinetic energy as the spring expands. The velocity of the cart when the spring has first returned to its unstretched length can be found using the conservation of energy. The potential energy stored in the spring when the cart is released is (1÷2) kx2, and the kinetic energy at the point when the spring returns to its unstretched length is (1÷2) mv². Setting these two equal to each other and solving for v gives:

sqrt(2kx÷m) = v

c) The period of oscillation of the cart is the time it takes for the cart to complete one full oscillation. T = 2pisqrt(m/k) can be used to calculate it.

2pisqrt(m÷k) = T 

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A method for developing questionnaire items that focuses on including questions that characterize the group the questionnaire is intended to distinguish is known as "differentiation sampling."

Differentiation sampling is a method used in questionnaire development to ensure that the questionnaire items effectively capture the characteristics that distinguish the target group from others. This approach involves selecting or generating questionnaire items that have the potential to discriminate between the target group and other groups.

To develop questionnaire items using differentiation sampling, researchers typically consider the unique attributes, behaviors, or experiences of the target group. Exothermic reaction attributes can be identified through prior research, expert knowledge, or insights gained from qualitative studies. The goal is to create items that are specific to the target group, effectively capturing their distinct characteristics.

This method enhances the precision and effectiveness of the questionnaire in assessing the intended group and its unique characteristics.

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The Kinetic Energy of the object of mass 10 kg and is moving with a speed of 12 km/h is 55.44 joules.

The energy of a body by due to its motion is called kinetic energy. Mathematically -

E[K] = 1/2mv²

Given is an object with a mass of 10 kg is moving with a speed of 12 km/h.

We can calculate the kinetic energy from the formula discussed above as -

E[K] = 1/2mv²

Velocity of object = [v] = 12 km/h = 12000/3600 m/s = 3.33 m/s

Substituting the values, we get -

E[K] = 1/2 x 10 x 3.33 x 3.33 = 55.44 joules

Therefore, the Kinetic Energy of the object of mass 10 kg and is moving with a speed of 12 km/h is 55.44 joules.

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Answer:

Explanation:

Formula

Force = G * m1 * m2 / r^2

Givens

Solution

1.67 * 10^-9 = 6.67 * 10^-11 * 110 * m2/(11)^2        Divide both sides by 10^-9

1.67 * 10^-9/10^-9 = 6.67*10^-11/(10^-9 *110*m2/121

1.67 = 6.67 * 110 * 10^-2 * m2 / 121                      Multiply both sides by 121

1.67 * 121  = 6.67 * 10 ^-2 * 110 * m2 * 121/121      Combine

202.07 = 7.337 * m2                                           Divide both sides by 7.337

202.07/7.337  =  m2

m2 = 27.54 kg

Digital hearing aids are designed to amplify soft sounds while suppressing loud sounds. This is achieved through advanced signal processing capabilities and adjustable gain settings.

Soft sounds typically have low amplitudes and may be difficult for individuals with hearing loss to perceive. Digital hearing aids use their microphone to capture these soft sounds and convert them into digital signals. The digital signal processor in the hearing aid analyzes and amplifies these signals selectively, boosting their amplitudes to make them more audible to the wearer.

On the other hand, loud sounds can be uncomfortable or even painful for individuals with hearing loss. To ensure listening comfort and protect against further damage, digital hearing aids incorporate compression algorithms. These algorithms automatically detect and limit the amplification of loud sounds, preventing them from reaching uncomfortable or harmful levels.

By differentiating between soft and loud sounds and applying appropriate amplification techniques, digital hearing aids provide a more balanced and comfortable listening experience. They enhance the audibility of soft sounds, helping individuals with hearing loss regain clarity and understanding in quieter environments while maintaining a safe and comfortable listening level in the presence of loud sounds.

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Answer:

As light travels in a straight line at a constant speed, it's acceleration is 0 m/s².

There is no rate of change of speed, so there is no acceleration.

Answer:

I guess the answer is c the f am not wrong

Answer:

the process of that happening is called Dissolving

the substance that is dissolved is called

Solute

The moment of inertia of a bicycle wheel of 65cm diameter and mass 1.1 kg is 0.116 Kg m^2.

What is moment of inertia?

Moment of inertia can be defined as the tendency of any object to remain in the state of rest or a constant rotational velocity which can be calculated by I = mr^2, where I is moment of inertia, m is mass and r is radius.

The moment of inertia of the bicycle wheel can be calculated as,

diameter of the bicycle wheel = 65 cm = 0.65 m

radius = d/2 = 0.65 m / 2 = 0.325 m

I = mr^2 = 1.1 Kg x (0.325m)^2 = 0.116 Kg m^2

Therefore the moment of inertia of the bicycle wheel is 0.116 Kg m^2.

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Explanation:

Hi, there!!

Energy is defined as the capacity or ability to do work. It's SI unit is Joule.

here,

Joule = (kg×m×m)/(s×s)

= kg×m^2/s^2.

Therefore, the derived unit is kg.m^2 by s^2.

Hope it helps...