the plucked string produces a tone. what is the fundamental frequency, in hertz, of the tone under the given conditions?

Answer:

air resistance slows the feather

Explanation:

Answer:

relay switch

Explanation:

relay switch is the answer

Generally, the coefficient of static friction should be at least 0.7 for a car traveling at this speed, but this value could be higher depending on the specific conditions.

The coefficient of static friction, or μs, is the ratio of the maximum static force that can be applied without causing slipping to the normal force between two surfaces. The coefficient is affected by the surfaces in contact and the material they are made of.

The tires of a car also have an effect on the coefficient of static friction. Tires with a greater tread depth can provide better grip on the road and therefore have a higher coefficient of static friction than tires with a shallow tread. Tire pressure also plays a role, as low pressure can reduce the coefficient of static friction.

The weight of the vehicle is also an important factor. Heavier vehicles tend to have a higher coefficient of static friction, as the greater mass increases the normal force between the car and the surface.

In conclusion, the coefficient of static friction for a car traveling at 115 km/h around a turn depends on several factors, including the road surface, the vehicle's tires, and the vehicle's weight.

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Location of the ball is top of the circle and acceleration is 3g.

Since tension force is more, surely ball is having net force upward and hence, the location of the ball in this case is top of the circle.

Any object that moves in a circle has an acceleration vector towards the center of that circle. This is known as Centripetal acceleration.

total force/ net force when ball is top of the circle is sum of tension force and gravity force.

\(F_{net\) = T + mg

Because of this net force, there is centripetal acceleration towards the center.

so, T + mg = ma

2mg + mg = ma

3mg = ma

a = 3 × force of gravity

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Answer:

D. Fitness log

Explanation:

because you are working out it would me the most since to use something specifically for work outs and exercise

Explanation:

100 m / (1.20 m) = 83.3

100 m / (0.75 m) = 133.3

Rounded up, the first sprinter takes 84 steps, and the second sprinter takes 134 steps.

Answer:

KE = total energy available - energy required to eject (threshold)

KE = (3 - 1.5) eV = 1.5 eV

Given that you have a two-resistor series circuit with an applied voltage of 100 V, we can use the principle of voltage distribution in a series circuit to determine the voltage across the second resistor.

In a series circuit, the total applied voltage is distributed across all the resistors. The voltage across each resistor is directly proportional to its resistance. In this case, we know the voltage across one resistor is 40 V.

Using the principle of voltage distribution, we can calculate the voltage across the other resistor as follows:

Total applied voltage = Voltage across resistor 1 + Voltage across resistor 2
100 V = 40 V + Voltage across resistor 2

Now, we can solve for the voltage across resistor 2:

Voltage across resistor 2 = Total applied voltage - Voltage across resistor 1
Voltage across resistor 2 = 100 V - 40 V
Voltage across resistor 2 = 60 V

So, the voltage across the other resistor in the series circuit is 60 V.

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Total, 2916 turns of wire are needed in a circular coil with a 11 cm diameter to produce an induced EMF of 7.6 V when the magnetic field increases from 0 to 0.25 T in 1.8 s.

To calculate the number of turns of wire needed in a circular coil to produce a specific induced electromotive force (emf), we can use Faraday's Law of electromagnetic induction;

EMF = N × dΦ/dt

where;

EMF is the induced electromotive force,

N is the number of turns of wire in the coil,

dΦ/dt will be the rate of change of magnetic flux.

Given;

Diameter of the coil (d) = 11 cm = 0.11 m

Induced emf (emf) = 7.6 V

Rate of change of magnetic field (dB/dt) = (0.25 T - 0 T) / 1.8 s

The rate of change of magnetic flux (dΦ/dt) can be calculated by multiplying the rate of change of magnetic field (dB/dt) by the cross-sectional area of the coil (A).

The cross-sectional area of the coil is given by the formula:

A = π × (d/2)²

Substituting the given values, we have:

A = π × (0.11/2)²

Simplifying, we get;

A = π × 0.015025

Now, we will calculate the rate of change of magnetic flux;

dΦ/dt = dB/dt × A

Substituting the values, we have;

dΦ/dt = (0.25 T - 0 T) / 1.8 s × π × 0.015025

Calculating the product, we find;

dΦ/dt ≈ 0.002609 T·m²/s

Now we can rearrange the equation for Faraday's Law to solve for the number of turns;

N = emf / (dΦ/dt)

Substituting the given values, we have;

N = 7.6 V / 0.002609 T·m²/s

Calculating the division, we find;

N ≈ 2916 turns

Therefore, total turns of wire were needed is 2916 turns.

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--The given question is incomplete, the complete question is

"A magnetic field increases from 0 to 0.25T in 1.8s How many turns of wire are needed in a circular coil 11 cm in diameter to produce an induced EMF of 7.6 V."--

I think its a secret!!

Answer:

uhh, uhh i think it's a carrot?

nah a secret

Explanation:

Answer:

camels have humps to store fat which is then converted to energy when food is scarce ( the humps are not used for storing water )

Answer: camels have humps to store fat which is then converted to energy when food is scarce ( the humps are not used for storing water )

Straining to read at an awkward angle or viewing a screen for too long can cause a condition known as digital eye strain or computer vision syndrome.

This is a common problem that affects people who spend long hours looking at digital screens, such as computer monitors, smartphones, and tablets. Symptoms of digital eye strain include eye fatigue, dry or irritated eyes, blurred vision, headaches, neck and shoulder pain, and difficulty focusing. It is caused by the blue light emitted by digital screens, which can disrupt our natural sleep-wake cycle and cause eye strain.

To prevent digital eye strain, it is important to take frequent breaks from the screen, adjust the screen brightness and contrast, and maintain a comfortable viewing distance and angle. Using computer glasses, which are designed to block blue light and reduce glare, can also be helpful in preventing digital eye strain.

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The acceleration of the car which is traveling at a steady speed of 75 m/s and its velocity changes to 95 m/s in 10 s is 2m/s2.

Given data as per the question is:

Initial velocity (u) as per the question is 75 m/s.

Final velocity (v) as per the question is 95 m/s.

Time given is 10s.

The formula to be used in the question is v=u+at

Substituting the value in the question.

95=75+(a)(10)

20=10a

a=2 m/s2

The acceleration of the car is 2 m/s2.

Acceleration is the term used in mechanics to describe the pace at which the velocity of an object varies over time. Acceleration is a vector quantity (in that they have magnitude and direction). The direction of an object's acceleration is determined by the direction of the net force acting on it.

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Answer:

7.70

7.700

Explanation:

We can simply add zeros behind the significant figures and they would still be equivalent to 7.7

Answer:

The fly will travel 20 miles before the runners collide with each other.

Explanation:

Since the runners are both traveling at the same speed, they will meet and collide in the exact middle of each other which is 5 miles away from their starting point. Since they are traveling at 5 mph, it will take exactly one hour before they collide. The fly is going 20 mph so it will travel 20 miles before the runners collide in one hour.

To find the time it took for the car to accelerate, you can use the formula:

t = (v - u) / a

where t is the time, v is the final velocity, u is the initial velocity, and a is the acceleration.

Plugging in the given values, you get:

t = (26 m/s - 19 m/s) / (205 m / t^2)

You can then rearrange the equation to solve for t:

t = sqrt(205 m / (26 m/s - 19 m/s))

Solving for t, you get:

t = sqrt(205 m / 7 m/s) = sqrt(29.3 s^2) = 5.4 s

So it took the car approximately 5.4 seconds to accelerate from 19 m/s to 26 m/s.

The speed of the ocean wave is 1.6 m/s.

Speed can be defined as the rate of change in distance.

To calculate the speed of the ocean wave, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, The speed of the ocean wave is 1.6 m/s.

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From low to high frequency, a wave's wavelength increases while its frequency decreases: 0.8 km, 5 m, 7 cm, 3 m, 460 nm, and 0.02 nm. The characteristic of a wave is known as its wavelength.

A wave's wavelength is the characteristic that determines how far identical locations between two succeeding waves are separated. The Greek letter lambda () is used to represent it. Thus, the wavelength is defined as the separation between one wave's crest or trough and the following wave.

The frequency of an event is its repetitions per unit of time. As a contrast to spatial frequency, it is also sometimes referred to as temporal frequency, and as a contrast to angular frequency, it is sometimes referred to as ordinary frequency.

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The statement that is true in this case is option A;  The initial momentum of both girls was equal.

If there are no outside forces acting on an isolated system, the law of conservation of momentum states that its overall momentum will remain constant.

Each lady in this scenario had her own momentum prior to the impact, which was the result of her mass and velocity. The total momentum of the system (both ladies together) remains unchanged after the collision because they collide and hold on to each other without any external forces acting on them. This suggests that both girls must have the same initial momentum.

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Missing parts;

Two friends on ice skates run directly toward each other. If they hold on to each other after they collide and do not move after their collision, which statement must be true? A) The initial momentum of both girls was equal. B) The initial speed of both girls was equal. C) The mass of both girls is equal. D) Their collision was inelastic.

Answer:

Three days per week on average

Explanation:

I'd say 3 days at least to be healthy

Answer:

Radiation

Explanation:

Radiation is the transfer of heat energy through space by electromagnetic radiation. Most of the electromagnetic radiation that comes to the earth from the sun is invisible.

Answer:

Verdadera.

Explanation:

La caloría se puede definir como una unidad estándar utilizada para medir la cantidad de energía presente en un organismo vivo.

Una caloría (cal) es la cantidad de transferencia de energía necesaria para elevar la temperatura de 1 g de agua de 14,5 °C a 15,5 °C.

Generalmente, es una unidad de medida de energía e igual a 4,1855 julios.

The process used in fire investigation to determine if and where electrical circuits were energized at the time of the fire is live circuit analysis.

This is a technique in which investigators use specialized equipment to measure the voltage and amperage levels of electrical circuits in the building. Live circuit analysis is conducted once the electrical power supply is re-established on-site for investigating the fire's origin and cause. It involves checking electrical outlets, appliances, and other devices that might have been connected to electrical circuits in the building.

This process is vital for determining whether an electrical fault or malfunction caused the fire and identifying the responsible parties for negligence. In summary, the live circuit analysis is a standard fire investigation procedure that can determine the presence and location of electrical faults that led to a fire. The technique provides insights for experts to reconstruct the origin and causes of the fire to prevent future tragedies.

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a. The normal force exerted on the skier as a function of the angle (αlpha), the skier’s mass m, and the acceleration due to gravity g is given by:
N = mg cos(α)
where N is the normal force, m is the mass of the skier, g is the acceleration due to gravity, and α is the angle between the snowball surface and the horizontal.

b. At the critical angle αc, the normal force becomes zero and the skier loses contact with the snowball. We can find αc by setting N = 0 in the equation above and solving for α:
cos(αc) = 0
αc = 90 degrees
This means that when the angle between the snowball surface and the horizontal is 90 degrees, the skier loses contact with the snowball.

c. After losing contact with the snowball, the skier will continue moving in a straight line tangent to the snowball surface with a constant speed. This is because there is no friction to slow down the skier's motion. The skier's trajectory will become parabolic as they move away from the snowball, due to the acceleration due to gravity. The skier will eventually hit the ground if the snowball is on a slope or continue moving in a straight line if the snowball is on a flat surface.

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Answer:

Useful Output = 35 J

Explanation:

The useful energy output of the car must be equal to the difference between the total input energy supplied to the car and the energy wasted by the car:

Useful Output = Total Input - Waste

where,

Total Input = 120 J

Waste = 85 J

Therefore,

Useful Output = 120 J - 85 J

Useful Output = 35 J

Answer:

A) Formation of ions

B)Formation of ionic bonds

C)Formation of cubes

D)Formation of crystals

Hope this helps

Answer:

1 4 2 3

Explanation:

edge 2021

Answer:

When white light shines on the bubble, it acts as a prism. While some of the white light bounces back off, some of them pass through the prism forming fringes of colors. But then, they too bounce off the inner part of the film. So one set of light rays shine into a soap bubble, but two sets of rays come back out again. When they emerge, the waves that bounce off the inner film have traveled a tiny bit further than the waves that bounced off the outer film. So, we have two sets of light waves. After that, the waves starts merging (Just like the ripples in the pond) . Some add together while some cancel out. That is why we see the pattern of colors repeating in the thin film soap.

The strong nuclear force, leptons do not interact with this force and include particles like electrons and muons.

Fundamental particles are the building blocks of matter and can be grouped into two categories based on their intrinsic properties and interactions with other particles: fermions and bosons. Fermions are the particles that make up matter and are divided into two subcategories: quarks and leptons. Leptons are fundamental particles that do not participate in the strong nuclear force, while quarks are particles that do participate in the strong nuclear force and are always found within hadrons, which are particles made up of quarks.

Hadrons are subdivided into two categories: baryons and mesons. Baryons are hadrons made up of three quarks, while mesons are hadrons made up of one quark and one antiquark. Some examples of baryons include the proton and the neutron, which are both made up of up and down quarks. Mesons include particles like the pion, kaon, and eta meson.

Leptons, on the other hand, are particles that do not interact with the strong nuclear force and include electrons, muons, and taus, as well as their corresponding neutrinos. Electrons are negatively charged particles that orbit the nucleus of atoms, while muons are similar in many ways to electrons, but are about 200 times more massive. Taus are even more massive than muons.

Overall, the categorization of fundamental particles into hadrons and leptons is based on their interactions with other particles, particularly with respect to the strong nuclear force. While hadrons are made up of quarks and are subject to the strong nuclear force, leptons do not interact with this force and include particles like electrons and muons.

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Convert to m/s

\(\\ \tt\longmapsto 108\times \dfrac{5}{18}\)

\(\\ \tt\longmapsto 30m/s\)

\(\\ \tt\longmapsto Distance=Velocity\times Time\)

\(\\ \tt\longmapsto Distance=30(30)\)

\(\\ \tt\longmapsto Distance=900m\)