what quantities in your calculation for standing wave frequencies would change by the addition of a small amount of weight to the mass hanger? if your standing wave goes away from this added mass, how would you restore it?

Answer:

Explanation:

The force on an object causes an a object to move

Answer:

   V = 12V,  V = 8V

Explanation:

a) In this series circuit the equivalent resistance is

          Req - R1 + R2

          Req = 30 + 20

          Eeq = 50 Ω

b) see attached

c) the circuit current is

          i = V / Req

          i = 20/50

          i = 0.4 A

voltages are>

         V = 0.4 30

          V = 12V

           V = 0.4 20

            V = 8V

Answer:

about 2.7liters for women and 3.7liters for men

Explanation:

Answer:

False

Explanation:

Neither the USGS nor any other scientists have ever predicted a major earthquake. USGS scientists can only calculate the probability that a significant earthquake will occur in a specific area within a certain number of years.

Answer: These forces are an example of newtons third law every action has equal and opposite reaction

Explanation:UwU

The magnitude of the charge on the particle of mass 0.0020 kg that is subjected to a magnetic field of 6 T which acts at a right angle to its motion is 0.0083 C ( a )

Fm = q v B

Fc = m v² / r

Fm = Magnetic force

q = Charge of the particle

v = Velocity of the particle

B = Magnetic field strength

Fc = Centripetal force

m = Mass

v = Velocity

r = Radius

m = 0.002 kg

v = 5 m / s

r = 0.2 m

B = 6 T

Since the magnetic force causes the centripetal motion,

q v B = m v² / r

q = m v / B r

q = 0.002 * 5 / 6 * 0.2

q = 0.01 / 1.2

q = 0.0083 C

Therefore, the magnitude of the charge on the particle is 0.0083 C ( a )

To know more about charge on the particle

https://brainly.com/question/28945412

#SPJ4

the wavelengths in the hydrogen spectrum of the first four members of the series where m=1, the first four members have the wavelength of \(1.464 * 10^7 m,\) \(1.231 * 10^7 m,\) \(1.164 * 10^7 m,\) and \(1.097 * 10^7 m.\)

The wavelengths of the spectral lines in the Lyman series of the hydrogen spectrum can be calculated using the Rydberg formula:

1/λ = \(R * (1/n1^2 - 1/n2^2)\)

Where λ is the wavelength of the spectral line, R is the Rydberg constant (approximately \(1.097 * 10^7 m^-^1)\), and n1 and n2 are positive integers representing the energy levels of the electron in the hydrogen atom.

For the Lyman series, we have m = 1, which means the electron transitions from higher energy levels (n2) to the first energy level (n1 = 1).

Let's calculate the wavelengths for the first four members of the Lyman series:

For n2 = 2:

1/λ = \(R * (1/1^2 - 1/2^2)\)

1/λ = \(R * (1 - 1/4)\)

1/λ = \(R * (3/4)\)

λ = \(4/3R\)

Substituting the value of the Rydberg constant:

λ = \((4/3) * (1.097 × 10^7 m^-^1)\)

λ ≈ \(1.464 * 10^7 m\)

For n2 = 3:

1/λ = \(R * (1/1^2 - 1/3^2)\)

1/λ = \(R * (1 - 1/9)\)

1/λ = \(R * (8/9)\)

λ = \(9/8R\)

Substituting the value of the Rydberg constant:

λ = \((9/8) * (1.097 * 10^7 m^-1)\)

λ ≈ \(1.231 * 10^7 m\)

For n2 = 4:

1/λ = \(R * (1/1^2 - 1/4^2)\)

1/λ = \(R * (1 - 1/16)\)

1/λ = \(R * (15/16)\)

λ = \(16/15R\)

Substituting the value of the Rydberg constant:

λ = \((16/15) * (1.097 * 10^7 m^-^1)\)

λ ≈ \(1.164 * 10^7 m\)

For n2 = 5:

1/λ = \(R * (1/1^2 - 1/5^2)\)

1/λ = \(R * (1 - 1/25)\)

1/λ = \(R * (24/25)\)

λ = \(25/24R\)

Substituting the value of the Rydberg constant:

λ = \((25/24) * (1.097 * 10^7 m^-^1)\)

λ ≈ \(1.097 * 10^7 m\)

Therefore, the wavelengths of the first four members of the Lyman series are approximately:

\(1.464 * 10^7 m,\)

\(1.231 * 10^7 m,\)

\(1.164 * 10^7 m,\)

and \(1.097 * 10^7 m.\)

Learn more about Lyman series here:

https://brainly.com/question/31856036

#SPJ11

The estimated total work done by Sami Heinonen and Juha Räsänen on the boat in this record lift is approximately 1292.17 Joules.To estimate the total work done by Sami Heinonen and Juha Räsänen on the boat in this record lift, we can use the formula:

Work = Force × Distance

First, let's find the force. The total mass lifted is 653.2 kg, and we need to account for the boat and its ten crew members. So, the mass lifted by each person is 653.2 kg ÷ 12 = 54.43 kg (rounded to two decimal places).

The force exerted by each person can be found using the formula:

Force = mass × gravity

Assuming the acceleration due to gravity is approximately 9.8 m/s², the force exerted by each person is:

Force = 54.43 kg × 9.8 m/s² = 533.83 N (rounded to two decimal places).

Now, let's calculate the distance lifted. The boat was lifted approximately 4 inches off the ground, which is approximately 0.1016 meters.

To find the total work done by the two men, we need to multiply the force exerted by each person by the distance lifted, and then multiply that by the number of lifts:

Work = (Force × Distance) × Number of lifts
     = (533.83 N × 0.1016 m) × 24
     = 1292.17 Joules (rounded to two decimal places).

Therefore, the estimated total work done by Sami Heinonen and Juha Räsänen on the boat in this record lift is approximately 1292.17 Joules.

To know more about estimated visit:

https://brainly.com/question/30876115

#SPJ11

According to the National Electric Code (NEC) section 426.20(A), an embedded deicing unit of the resistance type shall not exceed 120 watts/ft2 of the heated area.

This limits the amount of power that an embedded deicing unit of the resistance type can use to melt snow and ice on a surface. This ensures that the unit does not overheat or create a fire hazard.

It's important to note that this limit applies to the total power used by the embedded deicing unit and not just the heating element. Other factors like the type of material, the environment, and the design can also affect the performance and safety of the deicing unit.

It's recommended to consult with local code officials or a licensed professional to determine the specific requirements and limitations that apply to your project.

To learn more about National Electric Code

https://brainly.com/question/17215290

#SPJ4

The mechanical energy at top =Mechanical energy at bottom

\(\\ \tt\longmapsto M_{initial}=M_{Final}\)

\(\\ \tt\longmapsto KE=M_{initial}\)

\(\\ \tt\longmapsto KE=P.E_{(Top)}+K.E_{(Top)}\)

\(\\ \tt\longmapsto K.E=mgh+\dfrac{1}{2}mv^2\)

\(\\ \tt\longmapsto K.E=m\left(gh+\dfrac{v^2}{2}\right)\)

\(\\ \tt\longmapsto K.E=54\left((10)(51)+\dfrac{2.6^2}{2}\right)\)

\(\\ \tt\longmapsto K.E=54\left(510+\dfrac{6.76}{2}\right)\)

\(\\ \tt\longmapsto K .E=54(510+3.38)\)

\(\\ \tt\longmapsto K.E=54(513.38)\)

\(\\ \tt\longmapsto K.E=27722.52J\)

\(\\ \tt\longmapsto K.E=27.7KJ\)

Explanation:

use the explanation above

Hope it's clear

Stars form from molecular clouds through a process known as stellar formation.

These clouds, characterized by low temperatures and high densities, provide the ideal conditions for atoms to combine and form molecules. With a mass range spanning from a few solar masses to millions of solar masses, molecular clouds serve as the birthplaces of new stars. The Pleiades cluster serves as a notable example of stars that have recently formed within such a stellar nursery.

The formation of stars from molecular clouds involves several key steps. Firstly, gravitational forces acting on regions of higher density within the cloud cause them to collapse under their own gravity. As the cloud collapses, it begins to fragment into smaller, denser clumps called protostellar cores. These cores continue to collapse, and their central regions become increasingly dense and hot. At this stage, they are known as protostars.

To know more about molecular clouds here https://brainly.com/question/30631889

#SPJ4

Answer:

D

Explanation:

LA FUERZA NETA ES LA FUERZA TOTAL DE EMPUJE MENOS EL PESO DEL

COHETE.

\(F_{y}\) = 700000 N(sen 90° - 20°) - 560000 N = 97785 N

The approximate vertical component of the net force that is propelling the rocket away from Earth is 112,000 N. Option B is correct.

The net force acting on the rocket is the sum of the thrust force and the weight of the rocket. The thrust force is pointing upwards at an angle of 20 degrees, and the weight of the rocket is pointing downwards. The thrust force is the force that is generated by the rocket engine. It is the force that propels the rocket upwards.

The weight of the rocket is the force of gravity acting on the rocket. It is the force that pulls the rocket downwards. The net force acting on the rocket is the sum of the thrust force and the weight of the rocket. If the net force is positive, the rocket will accelerate upwards. If the net force is negative, the rocket will accelerate downwards. If the net force is zero, the rocket will remain at rest.

net force = thrust force + weight

vertical component of net force = thrust force * cos(angle)

vertical component of net force = 700,000 N * cos(20 degrees) = 112,000 N. Option B is correct.

To know more about the Force, here

https://brainly.com/question/31895833

#SPJ2

Answer:

because the knife is sharp

Answer:

Pressure is inversely proportional to the area of the surface. While a blunt knife has more area coming in contact than a sharp knife and the pressure exerted by the blunt knife will be less as compared to that of a sharp knife. Therefore it is easier to cut with a sharp knife.

Explanation:

Hope this helps! mark as brainliest please...

Answer:

P.E = 2934.75

Explanation:

Potential energy can be defined as an energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

\( P.E = mgh\)

Where, P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Given the following data;

Weight =645

Height = 4.55

\( P.E = mgh\)

But we know that weight = mg = 645N

Substituting into the equation, we have;

\( P.E = 645 * 4.55 \)

\( P.E = 2934.75 J\)

Potential energy, P.E = 2934.75 Joules.

In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.

However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.

It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.

To know more about plants visit:

https://brainly.com/question/31220793

#SPJ11

1. The data shows that amplitude, period, and tension all affect the speed of a wave. As amplitude and tension increase, the speed of the wave increases, while an increase in period results in a decrease in speed.

What is an amplitude?

Amplitude is the maximum displacement or distance moved by a wave from its resting position. In other words, it is the magnitude of the oscillation in a wave, or the height of a wave from its equilibrium position. In general, the greater the amplitude of a wave, the more energy it carries. In the context of sound waves, amplitude is associated with the loudness of the sound, while in the context of electromagnetic waves (such as light), it is associated with the brightness or intensity of the light.

2. The frequency of a wave has a direct relationship with the wave speed. As the frequency of a wave increases, the speed of the wave also increases.

3. Wave speed decreases as it moves from a medium of low density to one of high density. This is because a denser medium causes more resistance to the wave, resulting in a slower wave speed.

4. If the instrument is initially flat, the player should tighten the string. This is because tightening the string increases the tension, which in turn increases the speed of the wave, resulting in a higher pitch.

To know morw about wave, visit:

https://brainly.com/question/2820902

#SPJ1

Answer:

3420.39 N

Explanation:

Applying,

Fd = 1/2(mv²-mu²)................. Equation 1

Where F = force on the bumber, d = distance, m = mass of the car, v = final velocity, u = initial velocity.

make F the subject of the equation

F = (mv²-mu²)/2d............... Equation 2

From the question,

Given: m = 890 kg, v = 0 m/s (to rest), u = 1.4 m/s, d = 0.255 m

Substitute these values into equation 2

F = [(890×0²)-(890×1.4²)]/(2×0.255)

F = -1744.4/0.51

F = -3420.39 N

The negative sign denotes that the force in opposite direction to the motion of the car.

The higher an object is raised compared to the ground, the greater its gravitational potential energy.

Gravitational potential energy is the energy possessed by an object due to its position in a gravitational field. It is directly related to the height or elevation of the object above a reference point, such as the ground. The higher the object is raised, the farther it is from the source of gravity (typically the Earth), and thus the greater its potential energy.

The increase in gravitational potential energy occurs because when an object is raised, work is done against the force of gravity. Energy is transferred to the object, increasing its potential energy. This energy can be converted into other forms, such as kinetic energy when the object falls back to a lower position.

The relationship between gravitational potential energy (PE), mass (m), acceleration due to gravity (g), and height (h) can be expressed by the equation:

PE = m * g * h

Where "m" is the mass of the object, "g" is the acceleration due to gravity (approximately 9.8 m/s² on Earth), and "h" is the height or elevation above the reference point.

Therefore, the higher an object is raised compared to the ground, the greater its gravitational potential energy, indicating an increase in the potential for doing work or being converted into other forms of energy.

Learn more about Gravitational Potential Energy  at

brainly.com/question/3910603

#SPJ4

Complete Question:

The higher an object is raised compared to the ground, the greater its ___________.

The rate of effusion depends on the molecular weight of the gas, with lighter gases effusing more rapidly than heavier gases

False. Larger gases diffuse and effuse slower than smaller gases. This is because the rate of diffusion and effusion depends on the molecular weight of the gas. Smaller molecules have a higher velocity than larger molecules due to their lower mass, which allows them to move more quickly and diffuse and effuse more rapidly.

Diffusion refers to the process by which gas molecules move from an area of high concentration to an area of low concentration. This process occurs spontaneously due to the random motion of the gas molecules. Diffusion is responsible for the mixing of gases and is a key factor in many chemical reactions.

Effusion, on the other hand, refers to the process by which gas molecules escape from a container through a small hole or opening. This occurs because the gas molecules are in constant motion and collide with the walls of the container. If there is a small opening, some of the gas molecules will escape through it, leading to a decrease in pressure inside the container. The rate of effusion depends on the molecular weight of the gas, with lighter gases effusing more rapidly than heavier gases.

To learn more about spontaneously visit:

https://brainly.com/question/4228888

#SPJ11

The period of the mass-spring system is 0.39 seconds.

It is given that a spring with a spring constant of 245 N/m is attached to a 1. 5 kg mass and then set in motion. To calculate the period of the mass-spring system, you can use the formula:

T = 2π√(m/k)

where T is the period, m is the mass, and k is the spring constant.

Given the mass (m) as 1.5 kg and the spring constant (k) as 245 N/m, plug in these values:

T = 2π√(1.5 kg / 245 N/m)

T ≈ 0.39 s

So, the period of the mass-spring system is approximately 0.39 seconds when rounded to two decimal places.

Learn more about Mass-spring system:

https://brainly.com/question/30719089

#SPJ11

2,042.1 years time from now will we see it disappear.

d = 6.44. 3.10¹⁸ m,

v = 3.10⁸ m/s,

t = 6.44.3. 10¹⁸ / 3. 10⁸ s = 6.44 . 10¹⁰ sec.

Converting seconds to years:

6.44. 10¹⁰ sec . (1min/60 sec).(1h/60 min). (1d/24h)(1y/365d) = 2,042.1 years.

Physicists define time as the progression of events from the past through the present, and into the future. If a system doesn't change, it is effectively timeless. When describing events that take place in three-dimensional space, time may be seen as the fourth dimension of reality. We are unable to see, touch, or taste time, yet we can compute how much time has passed.

Everywhere in classical mechanics, time is constant. The timekeeping systems are still in sync. But as Einstein's special and general theories of relativity show, time is relative. It depends on the observer's perspective of view. The theory of time dilation states that when one approaches the speed of light, the intervals between events grow longer (dilates).

To know more about  time visit : https://brainly.com/question/13112278

#SPJ4

Answer:

Increase is energy transferred

Explanation:

Option B is correct

Answer:

The frictional force on the block is 118 N.

Explanation:

Given;

horizontal force applied on the block, f = 80 N

mass of the block, m = 20.0 kg

coefficient of friction, μ = 0.6

The frictional force on the block is calculated as;

F = μR

F = μ(mg)

F = 0.6(20 x 9.81)

F = 117.7 N

F = 118 N.

Therefore, the frictional force on the block is 118 N.

The magnitude of force F₂ required for the resultant moment about point C to be zero is approximately 643.92 N.

To find the magnitude of force F₂, we need to balance the moments created by both forces. The moment of a force is given by the equation:

M = F * d * sin(θ),

where M is the moment, F is the force, d is the perpendicular distance from the point of rotation to the line of action of the force, and θ is the angle between the force and the line connecting the point of rotation to the force.

Given:

F₁ = 300 N,

l₁ = 3 m,

l₂ = 7 m,

θ = 35°.

First, we calculate the moment created by force F₁ about point C:

M₁ = F₁ * l₁ * sin(θ).

To balance the moments, we need a force F₂ with a moment equal in magnitude but opposite in direction:

M₂ = -M₁.

Substituting the values and solving for F₂:

F₂ * l₂ * sin(θ) = -F₁ * l₁ * sin(θ),

F₂ = -F₁ * l₁ / l₂,

F₂ = -(300 N * 3 m) / 7 m,

F₂ ≈ -128.57 N.

Since the magnitude of the force is required, we take the absolute value:

|F₂| ≈ 128.57 N.

Therefore, the magnitude of force F₂ required for the resultant moment about point C to be zero is approximately 128.57 N.

To know more about magnitude, refer here:

https://brainly.com/question/31022175#

#SPJ4

Answer:

a. A book resting on the floor

Explanation:

Potential energy is the energy stored in a object due to its position relative to some zero position. An object possesses gravitational potential energy if it is positioned at a height above/below the zero height.

The final velocity of the race car in m/s calculated with the help Newton's first equation of motion is 35 m/s.

What is Newton's first equation of motion?

The first equation of motion given by Newton is v = u + at. This equation is also referred as the velocity-time relation.

According to Newton's first equation of motion,

v = u + at

where, v = final velocity, u = initial velocity, a = acceleration, t = time taken.

As given in question,

u = 90 km/h = 90 km/h / 3.6 = 25 m/s,

a = 5 m/s^2,

t = 2 seconds,

So, putting the values given in question the the Newton's first equation of motion.

v = u + at

v = 25+(5x2)

v = 25+10

v = 35 m/s

Hence, the final velocity is 35 m/s.

To know more about Newton's first equation of motion, go to link

https://brainly.com/question/1222214

#SPJ9

Answer:

( About ) 1.1 cm / s

Explanation:

We know that the time it takes the clock's second hand to move is 60 seconds. Respectively the radius of this clock is given to be 10.5 centimeters.

_______________________________________________________

Let us apply the formula speed = distance traveled / time. Here the " distance traveled " is the circumference of the clock, or 2πr - where we can pose π as 3.14. In other words, Speed = 2πr / time. Substitute known values to solve for the Speed,

S = 2 * 3.14 * 10.5 / 60,

Speed = ( About ) 1.1 cm / s

Hope that helps!