The diver compresses the spring by 0.35 m to achieve her initial upward velocity. At the point where the diver contacts the spring, all the energy is in the form of kinetic energy.
At the maximum compression point, all the energy is in the form of elastic potential energy stored in the spring. Therefore, we can use the conservation of energy principle to determine how much the spring is compressed.
The initial kinetic energy of the system is given by 1/2\(mv^{2}\), where m is the mass of the diver and v is the initial upward velocity.
Initial kinetic energy = 1/2*(52.0 kg)*\((1.7 m/s)^{2}\) = 79.1 J
At maximum compression, the elastic potential energy stored in the spring is equal to the initial kinetic energy.
Elastic potential energy = 1/2\(kx^{2}\), where k is the spring constant and x is the distance that the spring is compressed.
Solving for x: x = sqrt(2initial kinetic energy/k) = sqrt(279.1 J/4100 N/m) = 0.35 m
Therefore, the diver compresses the spring by 0.35 m to achieve her initial upward velocity.
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which physical method of controlling microbial growth applies pressure to water to create steam?
The physical method of controlling microbial growth that applies pressure to water to create steam is called "autoclaving" or "sterilization by autoclave."
Autoclaving is a widely used method for sterilization in various industries, including healthcare, laboratories, and food processing. It involves subjecting materials or objects to high-pressure saturated steam at elevated temperatures. The combination of pressure and heat effectively kills microorganisms, including bacteria, viruses, fungi, and spores.
Autoclaves consist of a sealed chamber that can withstand high pressures, along with a source of heat and a means to generate steam. The process involves placing the items to be sterilized inside the autoclave chamber and then raising the temperature and pressure to the desired levels. The high-pressure steam penetrates the materials and destroys the microorganisms present, ensuring effective sterilization.
The typical conditions for autoclaving include temperatures ranging from 121 to 134 degrees Celsius (250 to 273 degrees Fahrenheit) and pressures between 15 and 30 pounds per square inch (psi). These conditions are maintained for a specified period, usually around 15 to 30 minutes, depending on the size and nature of the items being sterilized.
Autoclaving is advantageous because it provides a reliable and efficient method for achieving sterility. It can be used to sterilize a wide range of materials, including laboratory glassware, surgical instruments, medical equipment, media and solutions, textiles, and more. The high temperatures and pressure ensure thorough sterilization, and the process is relatively quick compared to other methods.
However, it is important to note that not all materials can be autoclaved, as some may be sensitive to heat or moisture. Additionally, certain biological substances, such as certain types of infectious waste or toxins, may require specialized treatment beyond autoclaving.
Overall, autoclaving is a highly effective method for controlling microbial growth by applying pressure to water to create steam. Its widespread use in various industries is a testament to its reliability and efficiency in achieving sterilization.
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The tank has an electrical heating element which runs from the mains supply and heats the
water. The tank contains 0.15 m³ of water and water has a density of 1000 kg/m³. The water is
to be heated from 15°C to 50°C and has a specific heat capacity of 4200 J/kg°C.
al Calculate the mass of water in the tank.
Answer:150g
Explanation:
a) you can use formula: m=D.V
with: D= 1000kg/m³ and V=0,15m³
a 4.0-cm tall object is placed 60 cm away from a converging lens of focal length of 30 cm. what are the nature and location of the image? the image is
The location of the image is 4 cm. The image is real.
Calculation:-
We can find the image distance by using the lens formula which can be given as :
f = 30cm
= -60cm
So v= 60cm
Magnification = v/u = h i/h o
h i = 4 cm
and the image is real.
A lens is a transmissive optical tool that focuses or disperses a mild beam via refraction. An easy lens includes a single piece of transparent cloth, while a compound lens consists of several easy lenses, commonly organized alongside a commonplace axis.
By changing its form, the lens changes the focal distance of the attention. In other phrases, it focuses the mild rays that skip through it for you to create clean photos of gadgets that can be placed at various distances. 3 primary sorts of lenses: normal, telephoto, and wide perspective, and their respective lens focal lengths.
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A UPS delivery man lifts a package of 250 N of force in lives at 2 m off the ground. How much work did he do
Work = Force x distance
Force = 250 N
distance = 2 m
Replacing with the values given:
W = 250 N x 2 m = 250 kg m / s^2 x 2m = 500 kgm^2/s^2 = 500 J
1 N = 1 kgm/s^2
1J= 1 kg m^2 /s^2
each time he does one pushup, jose, who has a mass of 82kg , raises his center of mass by 25 cm . he completes an impressive set of 150 pushups in 5 minutes, exercising at a steady rate. if we assume that lowering his body has no energetic cost, what is his metabolic power during this workout?
Jose's metabolic power during this workout is 100.4 watts
To determine Jose's metabolic power during his workout,
1. Calculate the work done for one push-up: Work (W) is equal to force (F) multiplied by the distance (d). In this case, the force is Jose's weight (mass × gravitational acceleration), which is 82 kg × 9.81 m/s² = 803.22 N. The distance is 25 cm or 0.25 m. So, W = 803.22 N × 0.25 m = 200.805 J (joules).
2. Calculate the total work done for 150 push-ups: Since Jose completes 150 push-ups, the total work done is 150 × 200.805 J = 30,120.75 J.
3. Determine the time for the workout: Jose finishes his set in 5 minutes, which is 5 × 60 seconds = 300 seconds.
4. Calculate the average power: Power (P) is the work done per unit of time. So, P = 30,120.75 J / 300 s = 100.4025 W (watts).
Thus, Jose's metabolic power during his workout is approximately 100.4 watts, considering only the energetic cost of raising his body during the push-ups.
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the main cause of melting along subduction zones is the:
a. rise and decompression melting of mantle lithosphere
b. rise and decompression melting of mantle lithosphere
c. melting of the subducting plate
d. release of water from the subducting plate
The main cause of melting along subduction zones is the d. release of water from the subducting plate.
Subduction zones are areas where one tectonic plate moves beneath another, causing the denser plate to sink into the mantle. This process generates a significant amount of heat, which contributes to the melting of rocks in the mantle lithosphere.
As the subducting plate moves deeper into the mantle, it experiences increasing pressure and temperature. The minerals within the subducting plate contain water, which is released as the plate is subjected to these extreme conditions. This released water reduces the melting point of the surrounding mantle rocks, causing them to partially melt.
This partial melting creates magma, which can rise through the mantle lithosphere and eventually reach the Earth's surface, resulting in volcanic activity. The release of water from the subducting plate, therefore, plays a crucial role in generating the magma that leads to volcanic eruptions along subduction zones.
In summary, the main cause of melting along subduction zones is the d. release of water from the subducting plate, which lowers the melting point of surrounding mantle rocks and generates magma. This magma can rise through the mantle lithosphere, causing volcanic activity in these regions.
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The main cause of melting in subduction zones is the release of water from the subducting plate, which lowers the melting temperature of the surrounding rocks and causes them to melt.
Explanation:The main cause of melting along subduction zones is primarily the release of water from the subducting plate (option d). When the oceanic lithosphere subducts, it carries with it water that has been trapped in the minerals of the crust and upper mantle. This water lowers the melting temperature of the surrounding rocks, causing them to melt and form magma. This is termed 'flux melting'. For example, the subduction of the Pacific Plate beneath the North American Plate in the Cascadia subduction zone causes intense volcanic activity in the Pacific Northwest.
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consider the titration of 100.0 ml of 0.200 m acetic acid (ka by 0.100 m koh. calculate the ph of the result- ing solution after the following volumes of koh have been added.
Answer: The pH of the solution after 50.5 mL of 0.100 M KOH has been added is 16.85.
The reaction between acetic acid and potassium hydroxide (KOH) is given by the equation:
CH3COOH + KOH → CH3COOK + H2O.
It can be observed that for every mole of KOH added, one mole of H+ from CH3COOH reacts with one mole of OH- from KOH to produce one mole of H2O. Therefore, after the addition of n moles of KOH, the number of moles of H+ remaining is (0.200 - n) moles (since 0.200 M is the initial concentration of acetic acid). On the other hand, the number of moles of CH3COOK produced is also n moles; thus the final concentration of CH3COOK is n/V (where V is the total volume of the solution).
The reaction produces a salt (CH3COOK), which is neutral. Therefore, the final pH is given by: pH = pKa + log([A-]/[HA]) where A- is CH3COOK and HA is CH3COOH.
To find the pH of the resulting solution after the following volumes of KOH have been added, we need to calculate the number of moles of KOH added, the number of moles of CH3COOK produced, the number of moles of CH3COOH remaining, and the total volume of the solution. Then we can use the Henderson-Hasselbalch equation above to find the pH.
Here are the calculations: Initial number of moles of CH3COOH = M × V = 0.200 × 0.100 = 0.020 moles. For each mole of KOH added, one mole of CH3COOH reacts with one mole of KOH to produce one mole of CH3COOK.Number of moles of KOH added Volume of KOH added (mL)Moles of KOH added0.02 0.00 (initial) 0.000.02 10.10 0.010.02 20.20 0.020.02 30.30 0.030.02 40.40 0.040.02 50.50 0.05Number of moles of CH3COOK produced = number of moles of KOH added = n moles. Concentration of CH3COOK produced = n/V = n/(Vinitial + V added) = n/(0.100 L + V added)
Number of moles of CH3COOH remaining = initial number of moles - number of moles of KOH added = 0.020 - n moles. Total volume of the solution after the addition of KOH = V initial + V added = 0.100 L + V added. We can then use the Henderson-Hasselbalch equation to find the pH: pH = pKa + log([A-]/[HA])where A- is CH3COOK and HA is CH3COOH.pKa of acetic acid = 4.76
Let's tabulate the values of n, [A-], [HA], and pH for each volume of KOH added: Number of moles of KOH added n (moles)Concentration of CH3COOK produced [A-] (M)
Number of moles of CH3COOH remaining [HA] (M)pH0.000.000.020.76 (initial)0.010.010.019.84 0.020.020.018.98 0.030.030.018.20 0.040.040.017.49 0.050.050.016.85.
The pH of the solution after 50.5 mL of 0.100 M KOH has been added is 16.85.
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explain how we can find the age of a star cluster.
To determine the age of a star cluster, scientists use various methods, including isochron dating [age determination methods]. By analyzing the properties of the stars within the cluster, such as their brightness, color, and composition, astronomers can estimate the cluster's age.
The age estimation of a star cluster is based on the concept of stellar evolution. Stars within a cluster are believed to form around the same time from the same molecular cloud. As they age, stars undergo changes in their properties, such as their luminosity and temperature. By comparing these properties to theoretical models of stellar evolution, astronomers can construct isochrones, which are curves that represent the expected positions of stars at different ages in an Hertzsprung-Russell diagram.
By fitting the observed properties of stars in a cluster to the isochrones, astronomers can determine the age of the cluster. This process involves analyzing the main sequence turn-off point, which is the point where stars start evolving away from the main sequence as they exhaust their nuclear fuel. The position of the main sequence turn-off point provides a crucial indicator of the cluster's age.
In summary, the age of a star cluster can be estimated by studying the properties of its stars and comparing them to theoretical models of stellar evolution, using methods such as isochron dating.
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a puuck of mass m pslides across a horizontal surafe cand collides with a stationary, nonuniform rod that is pivoted about its left end in three configurations ap physics
surafe cand collides with a stationary, nonuniform rod that is pivoted about its left end in three configurations with angular velocity ω=MpVpL/(1/12 ML²+MpL²)
The moment of inertia of a rod rotated about one end is 1/12 ML².
The law of conservation of angular momentum states that when no external torque acts on an object, no change of angular momentum will occur.
Write the expression of the conservation of the angular momentum.
.L1=L2
MpVpL=(1/12 ML²+MpL²)ω
ω=MpVpL/(1/12 ML²+MpL²)
Thus, the angular velocity is ω=MpVpL/(1/12 ML²+MpL²)
The rotational axis is the direction in which the angular velocity is moving. The angular velocity of an object rotating counterclockwise is along the axis of rotation, away from you. The angular velocity of an object rotating counterclockwise points in your direction along the axis of rotation.
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3. Electrons are the only part of an atom that can be transferred between materials. True or
False?
Answer:
True
Explanation:
Electrons can be transferred between materials as in chemical reactions solid substances lose electrons while other elements gain electrons to balance the electrons in reaction.It occurs by conduction,polarization and friction.
A 2. 00-m long piano wire with a mass per unit length of 12. 0 g/m is under a tension of 8. 00 kn. What is the frequency of the fundamental mode?.
The frequency of the fundamental mode of the piano wire is 166.67 Hz.
To determine the frequency of the fundamental mode of a piano wire, we can use the equation:
f = (1 / 2L) * (T / μ)^0.5
where f is the frequency of the fundamental mode, L is the length of the wire, T is the tension in the wire, and μ is the mass per unit length of the wire.
Given that the wire is 2.00 m long, has a mass per unit length of 12.0 g/m and a tension of 8.00 kn, we can substitute these values into the equation:f = (1 / 2 * 2.00 m) * (8.00 kn / (12.0 g/m))^0.5
To solve this equation we need to convert the units of tension to N and the mass per unit length to kg/m.
The tension is given in kn and it needs to be converted to N by multiplying it by 1000, the mass per unit length is given in g/m and it needs to be converted to kg/m by multiplying it by 10^-3.
f = (1 / 2 * 2.00 m) * (8000 N / (12*10^-3 kg/m))^0.5
Now we can solve the equation:
f = (1 / 2 * 2.00 m) * (666.67 N/kg)^0.5f = (1 / 4) * (666.67 N/kg)^0.5
f = 166.67 (N/kg)^0.5
f = 166.67 (s^-1)^0.5
f = 166.67 Hz
Therefore, the frequency of the fundamental mode of the piano wire is 166.67 Hz.
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a person riding in an elevator stands on a metric scale. if the mass of the person is 60.0 kg and the elevator accelerates upward with an acceleration of 4.90 m/s2, what is the reading on the scale?
The reading on the scale is 882.6 N when the elevator accelerates upwards with an acceleration of 4.90 m/s².
Given that the mass of a person is 60.0 kg and the elevator accelerates upwards with an acceleration of 4.90 m/s², we have to determine the reading on the scale.
Let F be the force exerted by the scale on the person. Then, by Newton's second law of motion, the net force acting on the person is Fnet= m * a
where m = 60.0 kg is the mass of the person and a = 4.90 m/s² is the acceleration of the elevator. Hence, the net force acting on the person is given by;
Fnet = 60.0 kg * 4.90 m/s²
Fnet = 294.0 N
Therefore, the scale reading is equal to the force exerted by the scale on the person. Since the elevator is accelerating upwards, the force exerted by the scale on the person is greater than the weight of the person, which is the force of gravity acting on the person.
The force of gravity acting on the person is given by;
Fg = m * g, where g = 9.81 m/s² is the acceleration due to gravity. Hence, the force of gravity acting on the person is given by;
Fg = 60.0 kg * 9.81 m/s²Fg = 588.6 N
Therefore, the scale reading is given by the sum of the force of gravity acting on the person and the net force acting on the person;
F = Fg + Fnet
F = 588.6 N + 294.0 N
F = 882.6 N
Thus, the reading on the scale is 882.6 N when the elevator accelerates upwards with an acceleration of 4.90 m/s².
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What will happen if a positive charge is placed near a negative charge?
When a positive charge is placed near a negative charge, they will attract each other.
Coulomb's law is an inverse-square law in physics that describes how electrically charged particles interact. According to Coulomb's law, the magnitude of the electrostatic force between two electrically charged objects is proportional to the magnitude of the electric charges and inversely proportional to the distance between them squared. The law was introduced in 1785 by French physicist Charles-Augustin de Coulomb.
Therefore, the force of attraction between the positive charge and the negative charge will be proportional to the product of the magnitude of the charges and inversely proportional to the square of the distance between them.
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Student A states that when she sits down on a chair, she is exerting a force on the chair and that is all that happens. Student B states that when she sits on a chair, the chair is actually exerting a force back on her in reaction to her force exerted upon the chair. Which student is correct and why?
A.
Student A is correct because Newton’s 1st Law of Motion states that if the chair exerted a force on the student, her motion would change.
B.
Student A is correct because Newton’s 3rd Law of Motion states that for every action there is an equal and opposite action and the chair does not show any action.
C.
Student B is correct because Newton’s 1st Law of Motion states that if the chair were to be exerting a force on the student, her motion would change.
D.
Student B is correct because Newton’s 3rd Law of Motion states that for every action there is an equal and opposite action and the chair’s action counteracts the student’s so that neither move.
Answer:
C
Explanation:
I got it right on the test !!
The student that is correct is C. Student B is correct because Newton’s 1st Law of Motion states that if the chair were to be exerting a force on the student, her motion would change.
According to Newton's third law of motion, there's an equal and opposite reaction force for every action force. It should be noted that when an individual sits on a chair, the chair is actually exerting a force back on her in reaction to the force exerted upon the chair.
Student A is incorrect because when she sits down on a chair, the force that she's exerting on the chair is not the only thing that happens because the chair exerts a force back. Therefore, as the chair were to be exerting a force on the student, her motion would change.
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The prefix that multiplies a basic si unit by 0. 01 is.
The prefix that multiplies a basic SI unit by 0.01 is "centi."
The International System of Units (SI) is a modernized version of the metric system.
It is a standardized system of measurement used in almost every country in the world.
SI units are used in scientific and industrial applications because they are globally recognized, easy to work with, and mathematically coherent.
SI units are based on seven basic units that are defined and standardized for universal use.
The seven basic units are:
Mass (kilogram)Length (meter)Time (second)Electric current (ampere)
Temperature (kelvin)Amount of substance (mole)
Luminous intensity (candela)Prefixes for SI units
Prefixes are used to convert a basic unit into a larger or smaller unit. Prefixes are used to denote the powers of 10 that multiply the base unit.
For example, kilo- means 10^3, so one kilometer is equal to 1000 meters, while milli- means 10^-3, so one milliliter is equal to 0.001 liters. The prefix "centi-" denotes a multiplication by 0.01.
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Air terjun dari ketinggian 9 m digunakan 75% energinya untuk membangkitkan listrik bertegangan 220 volt. Jika massa air yang jatuh sebanyak 13 kg, maka yang diperlukan untuk mencapai arus 2 A adalah . . . .
TOLONG DONGG PLS
Answer:
2356800874321358900875432112375
Explanation:
yes deez
Which of the following is NOT a characteristic of noble gases? *
-unreactive
-odorless
-solid at room temperature
-colorless
Answer:
solid at room temperature
Explanation:
they are unreactive
Explain the difference between velocity and acceleration.
Answer:
velocity has direction and acceleration doesn't
A rocket is launched from atop a foot cliff with an initial velocity of .Use the vertical motion formula . Let .How long will take for the rocket to hit the ground after it is launched. Round your answer to the nearest second.
It will take approximately 2.48 seconds for the rocket to hit the ground after it is launched.
To find the time it takes for the rocket to hit the ground after it is launched, we can use the vertical motion formula. The formula is:
y = y0 + v0t + (1/2)at^2
In this case, y0 represents the initial height of the rocket, which is the height of the foot cliff, so y0 = 100. v0 represents the initial velocity of the rocket, which is given as . a is the acceleration due to gravity, which is approximately -32.2 ft/s^2. And we want to find the time it takes for the rocket to hit the ground, so y = 0.
Plugging in the values into the formula, we have:
0 = 100 + (0)t + (1/2)(-32.2)t^2
Simplifying the equation, we get:
-16.1t^2 + 100 = 0
Now, we can solve this quadratic equation for t. Using the quadratic formula, we have:
t = (-b ± √(b^2 - 4ac))/(2a)
In this case, a = -16.1, b = 0, and c = 100. Plugging in these values, we get:
t = (± √(0 - 4(-16.1)(100)))/(2(-16.1))
Simplifying further, we have:
t = (± √(6440))/(32.2)
t = (± 80)/(32.2)
Calculating the positive value of t, we get:
t = 80/32.2
t ≈ 2.48 seconds
Therefore, it will take approximately 2.48 seconds for the rocket to hit the ground after it is launched.
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the maximum amount of weight a jack can lift is called its
The "Load Capacity" of a jack refers to the greatest weight it can support. Maximum weight of cargo that has been authorised by the country where the vehicle was registered.
Define the term Load Capacity?We can determine the necessary minimum capacity for a trailer jack by analysing the concentration of loads in a typical trailer.
The capacity should take into consideration both the jack's responsibility to sustain the weight and the lifting mechanism's capability to lift it.The tongue of a conventional trailer is designed to support 10% to 15% of a gross trailer weight when the trailer is positioned horizontally. Take the gross trailer weight then multiply it by the number of trailer jacks required to support the trailer. 15 to determine the tongue's theoretical weight. Choose a jack with a safety margin with which you are familiar with and that can support that weight.Thus, the "Load Capacity" of a jack refers to the greatest weight it can support.
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Predict how monarch butterfly populations may compare over time in two locations with very different temperatures.
Answer:
they will increase why because they go from warm cold warm meaning they have to adapt back to the previous location
Explanation:
g say you tie a thick, dense rope to a thin, less dense string. if you send a single wave pulse through the string, will it be transmitted through to the rope/and or reflected back into the string? also, which orientation will any transmitted or reflected pulses have relative to the original pulse?
If you send a single wave pulse through the string, it will be transmitted through to the rope.
Let's consider a thin rope attached to a thick rope, with every rope held at opposite ends via people. And suppose that a pulse is introduced through the person conserving the top of the skinny rope. If that is the case, there will be an incident pulse visiting within the less dense medium toward the boundary with a more dense medium.
A part of the strength carried through the incident pulse is transmitted into the thick rope. The disturbance that keeps shifting to the right is called the transmitted pulse. A part of the energy carried via the incident pulse is reflected and returns toward the left giving up the thin rope. The disturbance that returns to the left after bouncing off the boundary is called the reflected pulse.
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The total mass of the train and its passengers is 750000kg. The train is traveling at a speed of 84m/s. The driver applies the brakes and the train takes 80s to slow down to a speed of 42m/s.
Answer:
|F| = 393750 N
Explanation:
Given that,
Total mass of the train, m = 750000 kg
Initial speed, u = 84 m/s
Final speed, v = 42 m/s
Time, t = 80 s
We need to find the net force acting on the train. The formula for force is given by :
F = ma
\(F=\dfrac{m(v-u)}{t}\\\\F=\dfrac{750000\times (42-84)}{80}\\\\F=-393750\ N\)
So, the magnitude of net force is 393750 N.
Which of the following has kinetic energy?
O a compressed spring
O a stretched spring
O a spring traveling down a flight of stairs
O a spring still at the top of a flight of stairs
It would be 3: a spring descending a set of steps. As kinetic energy is the energy of motion, it must be in motion.
What is Kinetic energy?Since it is moving, it would be a spring moving down a set of steps. A stretched spring, a compressed spring, and a spring at the top of a set of steps are all in motion.
Kinetic energy is a type of power that a moving object or particle possesses.
An item accumulates kinetic energy when work, which involves the transfer of energy, is done on it by exerting a net force. A moving object or particle has kinetic energy, which depends on both its mass and its rate of motion.
Therefore, It would be 3: a spring descending a set of steps. As kinetic energy is the energy of motion, it must be in motion.
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Bekesy's place theory of hearing proposes that the frequency of a sound is _____ .
According to Bekesy's place theory of hearing, the frequency of a sound correlates to the area along the organ of Corti where the greatest number of nerve cells are activated.
What is the Bekesy hypothesis?By using a circular window to transmit sound vibrations to the cochlear fluid, von Békésy found that the traveling wave was generated along the length of the basilar membrane, and that the point of maximum amplitude varied depending on the fundamental frequency of the vibration.
What is explained by place theory?According to the place theory of hearing, the location along the basilar membrane where each frequency of a sound produces vibrations affects how we hear it.
What is a place theory illustration?A sound of 6,000 hertz, for instance, would excite the area of the basilar membrane that has a 6,000 hertz characteristic frequency.
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15. Aluminum weighs .09 lbs. per cu. in. What is the weight of a sheet of aluminum 36"
long, 24" wide, and thick?.
The weight of a sheet of aluminum that is 36" long, 24" wide, and thick would be 7.776 lbs.
Weight determinationWe need to first find the volume of the aluminum sheet in cubic inches, and then use its density to calculate its weight.
The volume of the aluminum sheet can be calculated as:
V = l x w x h = 36 in x 24 in x 0.1 in = 86.4 cubic inches
where l is the length, w is the width, and h is the thickness of the sheet.
The density of aluminum is 0.090 lb/in^3, as given in the problem.
Therefore, the weight of the aluminum sheet can be calculated as:
W = V x density = 86.4 cubic inches x 0.090 lb/in^3 = 7.776 lbs
Therefore, the weight of the aluminum sheet is 7.776 lbs.
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a professor drives off with his car (mass 850 kg), but forgot to take his coffee mug (mass 0.3 kg) off the roof. the coefficient of static friction between the mug and the roof is 0.7, and the coefficient of kinetic friction is 0.5. what is the maximum acceleration of the car, so the mug does not slide off?]
The maximum acceleration of the car so the mug does not slide off is 6.861 m/s².
To find the maximum acceleration of the car so the mug does not slide off, follow these steps:
1. Determine the maximum static friction force between the mug and the roof using the formula:
static friction force = coefficient of static friction * normal force.
In this case, the normal force is equal to the weight of the mug (mass * gravity), so the formula becomes:
static friction force = 0.7 * (0.3 kg * 9.81 m/s²).
2. Calculate the static friction force: 0.7 * (0.3 kg * 9.81 m/s²) = 2.0583 N.
3. Determine the maximum acceleration by dividing the static friction force by the mass of the mug: maximum acceleration = static friction force / mass of the mug = 2.0583 N / 0.3 kg.
4. Calculate the maximum acceleration: 2.0583 N / 0.3 kg = 6.861 m/s².
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you will use certain thermodynamic values for water constantly during the unit. which of the values below are they?
The thermodynamic values for water that are used constantly during a unit. Some key thermodynamic values for water are:1. Specific heat capacity (Cp);2. Latent heat of vaporization;3. Latent heat of fusion (L_f).
1. Specific heat capacity (Cp): The amount of heat required to raise the temperature of 1 gram of water by 1 degree Celsius. For water, Cp is approximately 4.18 J/g·°C.
2. Latent heat of vaporization (L_v): The amount of heat required to convert 1 gram of liquid water to water vapor at a constant temperature. For water, L_v is approximately 2260 J/g
3. Latent heat of fusion (L_f): The amount of heat required to convert 1 gram of solid ice to liquid water at a constant temperature. For water, L_f is approximately 334 J/g.
These thermodynamic values are used constantly when studying and analyzing water's behavior in various processes, as they help determine the energy transfer that occurs during phase changes and temperature changes.
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Why are electron affinity values for the noble gases endothermic?.
Answer:
An electron added to a noble gas must go in the next higher energy level. The periodic trend for electron affinity values is not as consistent as for other trends.
Witch of the following best describes the forms of electromagnetic waves produced by sunlight ?
A) sunlight contains ultraviolet rays only
B) sunlight contains all types of electromagnetic waves
C) sunlight contains only the three electromagnetic waves that are referred to as light
D) sunlight contains visible light and ultraviolet rays only
sunlight contains ultraviolet rays only best describes the forms of electromagnetic waves produced by sunlight. Hence option A is correct.
What is sunlight ?A fraction of the electromagnetic energy emitted by the sun, including infrared, visible, and ultraviolet light, is known as sunlight. When the Sun is above the horizon, sunlight on Earth is seen as daylight after being dispersed and filtered by the atmosphere. Sunshine, a mix of brilliant light and radiant heat, is what we feel when direct solar radiation is not obstruct by clouds. Sunlight is diffused when it is obstructed by clouds or reflected off of other surfaces. According to sources, the average solar radiation received by each square metre on Earth during a 24-hour period ranges from 164 to 340 watts[1]; according to NASA, this amount represents roughly 25% of the planet's average total solar irradiance.
Sunlight's UV radiation has both favorable and unfavorable impacts on health.
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