A guitar string transmits waves at 509 m/s. To create a 491 Hz note, to what length should the guitar player shorten the string? unit= Meters
will give brainliest!!!

Answer:

Total mechanical energy = 225 J

Explanation:

Given:

Mass of duck (m) = 2 kg

Speed of duck (v)= 5 m/s

Height of duck from ground (h) = 10 m

Gravitation acceleration (g) = 10 m/s²

Find:

Total mechanical energy

Computation:

Total mechanical energy = Kinetic energy + Potential energy

Total mechanical energy = (1/2)mv² + mgh

Total mechanical energy = (1/2)(2)(5)² + (2)(10)(10)

Total mechanical energy = 25 + 200

Total mechanical energy = 225 J

In the periodic table, noble gases are all mentioned except potassium and hydrogen.

Periodic table is a tabular arrangement of elements in the form of a table. In the periodic table, elements are arranged according to the modern periodic law which states that the properties of elements are a periodic function of their atomic numbers.

It is called as periodic because properties repeat after regular intervals of atomic numbers . It is a tabular arrangement consisting of seven horizontal rows called periods and eighteen vertical columns called groups.

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Answer:

3.33 A

Explanation:

Equalent Resistance=30 ohms

I = V / R

I = 100 / 30

I = 3.33 A

The difference between charging by conduction and charging by induction lies in the process of transferring electric charge and the need for direct contact between the objects involved.

Charging by conduction occurs when two objects with different electric charges come into direct contact with each other. This allows electrons to transfer between the objects until they reach an equilibrium or the same charge.

To illustrate this, imagine a charged rod touching a neutral metal sphere.

Electrons will move between the rod and the sphere until both objects have the same charge.

Charging by induction, on the other hand, does not require direct contact between objects. Instead, it involves the rearrangement of charges within an object due to the influence of a nearby charged object.

To demonstrate this process, consider a charged rod brought close to, but not touching, a neutral metal sphere.

The rod's charge will cause the electrons in the sphere to rearrange, creating an induced charge on the sphere's surface. The sphere can then be grounded, allowing electrons to move between it and the ground, leaving it with a net charge.

In summary, charging by conduction requires direct contact between objects and involves the transfer of electrons, while charging by induction does not require contact and involves the rearrangement of charges within an object influenced by a nearby charged object.

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Answer:

Chuck Yeager

Explanation:

When Nellie hangs from a pair of ropes at an angle, the tension in the ropes c. depends on the angle of the ropes to the vertical. The angle at which the ropes are hanging affects the amount of tension that is required to keep Nellie suspended in the air.

The tension in the ropes will increase as the angle of the ropes to the vertical decreases. This is because the angle of the ropes affects the horizontal and vertical components of the force acting on Nellie. When the ropes are at a steep angle, there is more of a vertical force acting on Nellie, which means that the tension in the ropes will need to be greater in order to keep her suspended.
The tension in the ropes will always be equal to Nellie's weight when the ropes are at a 90-degree angle to the vertical. However, as the angle decreases, the tension in the ropes will increase. Therefore, the tension in the ropes will never be equal to half her weight or twice her weight, but rather it will depend on the angle of the ropes to the vertical.
In conclusion, the tension in the ropes that Nellie hangs from at an angle depends on the angle of the ropes to the vertical. The greater the angle, the greater the tension needed to keep her suspended.

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Answer:

73 neutrons.

Explanation:

Data obtained from the question:

Mass number of Xenon = 127.

Neutron number =...?

We can obtain the number of neutron present as follow:

Atomic number of Xenon = 54

Recall:

Atomic number = proton number = 54

Mass number = proton + neutron

127 = 54 + Neutron

Neutron = 127 – 54

Neutron = 73.

Therefore, 73 neutrons are present in the Xenon atom.

A gravitational force is always attractive in nature and a magnetic force is attractive in nature between two opposite poles and repulsive in nature between two same pole.

Gravity and magnetism are not the same thing. These two ideas or expressions are entirely dissimilar from one another. Despite the fact that both are regarded as forces, they are two distinct forces with various traits and features.

First of all, gravity works between two objects regardless of their composition because it is a separate force. There will be gravitational forces between the items as long as they have mass. Any two things will be drawn toward one another by gravity or another gravitational force if they have mass.

Magnetism, on the other hand, mostly depends on the unique characteristics of the object. There are two directions for the magnetic force. It has the power to draw things together as well as away from one another. The orientation of the electrons inside the items also affects how magnetism behaves. With gravity and gravitational force, this is not the case.

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10.2 cm separates the hubcap from the face. The magnitude of the hubcap's radius of curvature is 0.318 cm.

To determine the distance between the enthusiast's face and the hubcap, use the concept of mirror images formed by curved surfaces.

In the first scenario, when the enthusiast sees an image of his face 10.2 cm behind the hubcap, we can assume that the hubcap acts as a concave mirror.

The distance between the face and the hubcap is equal to the focal length of the mirror.

Therefore, the face is 10.2 cm away from the hubcap.

In the second scenario, when the hubcap is turned over, it now acts as a convex mirror.

The distance between the face and the hubcap remains the same.

From the given information, the image of the face appears 29.4 cm behind the hubcap.

This distance corresponds to the focal length of the convex mirror, which is negative. So, the focal length is -29.4 cm.

To find the magnitude of the radius of curvature, we can use the mirror equation:

1/f = 1/v - 1/u,

where f is the focal length, v is the image distance, and u is the object distance.

Plugging in the values:

1/-29.4 = 1/29.4 - 1/10.2.

Simplifying the equation:

\(1/-29.4 = (10.2 - 29.4)/(29.4 * 10.2).\)

Solving for the left-hand side:

-29.4 = -0.318.

Taking the reciprocal of both sides:

-1/29.4 = -1/0.318.

Thus, the magnitude of the radius of curvature is approximately 0.318 cm.

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Answer:

I think C? I'm not sure totally though...

Explanation:

Answer:

The acceleration of an object can be calculated using Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration. The equation is:

F = ma

where F is the force, m is the mass, and a is the acceleration.

So, if we know the mass of the object (m = 56 kg) and the force acting on it (F = 800 N), we can calculate the acceleration (a) by dividing the force by the mass:

a = F / m

a = 800 N / 56 kg

a = 14.28 m/s^2

So the acceleration is 14.28 m/s^2

The weight of the person(s) using the ladder, as well as the weight of any tools or materials being carried up the ladder.

When using a ladder, it is important to calculate the total weight it needs to support to ensure safety and stability. In addition to the weight of the person(s) using the ladder, the weight of any tools or materials being carried up the ladder must also be taken into account.

Neglecting to consider these factors can lead to a ladder being overloaded, which can cause it to become unstable and increase the risk of falls or other accidents.

It is also important to choose the right type of ladder for the job, as different ladders have different weight capacities and maximum load ratings. When in doubt, it is always better to err on the side of caution and choose a ladder with a higher weight capacity than you think you will need.

By taking the time to properly calculate the total weight a ladder needs to support, you can ensure that you are using it safely and reduce the risk of accidents or injuries.

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If caught outside in a thunderstorm, find a low spot away from trees, fences, and poles. If your skin tingles and hair stands on end, lightning is about to strike. Crouch down immediately, balancing on the balls of your feet, placing hands on knees with head between them.

I tryed

Answer: take shelter

Explanation: Because u don’t want to die

Answer:

4b: comets

5a: supercluster

5b: they just changed 4b's solar system for milky way. I think it is still comets. if not, then just say black holes.

Systems, where matter accretes onto black holes, can be highly luminous compared to objects of similar mass due to the release of large amounts of gravitational potential energy as the matter falls into the black hole and forms an accretion disk.

In systems where matter accretes onto black holes, such as in active galactic nuclei (AGN) or X-ray binaries, the accreting matter forms an accretion disk around the black hole. As the matter spirals inwards toward the black hole, it gains significant kinetic energy and releases a large amount of gravitational potential energy.

This gravitational potential energy is converted into various forms of energy, including thermal energy and radiation. The accretion disk can become extremely hot and emit intense radiation across a wide range of wavelengths, making these systems highly luminous.

This high luminosity arises from the efficient conversion of gravitational potential energy into radiation, making accreting black hole systems appear much brighter compared to other objects of similar mass that do not exhibit such accretion processes.

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Answer:

TRUE

Explanation:

Answer:

1440÷12=120

Explanation:

because u have to divide the mitre with the 12 m

Answer:

Explanation:

The PE equation for a mass/spring system is

\(PE=\frac{1}{2}k\)Δx² and filling in:

\(130=\frac{1}{2}k(.10)^2\) and

\(k=\frac{2(130)}{(.10)^2}\) so

k = 26000 N/m

If the displacement from equilibrium changes more, the PE needed to compress it will also change.

\(PE=\frac{1}{2}(26000)(.20)^2\) gives us that

PE = 520J

Answer: 1.85 feet

Explanation:

The latitude and longitude coordinates for Location C are given as 50S, 68W. Therefore, the correct answer is 4) Cannot discern from the information provided.

Latitude and longitudinal lines are shown on a globe of Earth as parallel and vertical lines. To determine which distance is farther, we need to compare the distance between Location B and the Equator with the distance between Location C and the Equator.

However, the latitude and longitude coordinates for Location B and the specific direction or coordinates of the Equator are not provided. Without this information, it is not possible to determine which distance is farther between Location B and the Equator or Location C and the Equator.

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Answer:

Given that voltage is a measurement of energy per unit charge, Kirchhoff's loop rule is based on the law of conservation of energy, which states: the total energy gained per unit charge must equal the amount of energy lost per unit of charge.

Explanation:

-google

Answer:

Dietary carbohydrates provide the body with energy for tough workouts and replenish energy stores in muscles in the form of glycogen.

Explanation:

The speed of impulse conduction along an axon can be increased by several factors and mechanisms like Myelination, Axon diameter, Temperature, and Synaptic transmission efficiency.

The presence of myelin sheath, which is a fatty insulating substance, around the axon enhances the speed of impulse conduction.

Axons with larger diameters generally conduct impulses faster compared to axons with smaller diameters.

Higher temperatures can increase the speed of nerve impulse conduction.

At the synapses between neurons, the efficiency of neurotransmitter release and reception can impact the speed of impulse conduction.

These factors interact with each other and can collectively contribute to the speed of impulse conduction along an axon.

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A goldfish swims in a bowl of water at 20°C over a period of time, fish transfer 120j to the water as a result of its metabolism, the change in entropy of the water is 0.409 J/K.

In other words, the increase in disorganization within a system is what is referred to as entropy, which is defined as the measurement of degree of randomness. Entropy is a unitary measure of the amount of thermal energy in a system that cannot be used to carry out useful work. The quantity of entropy is also a gauge of a system's molecular disorder, or randomness, as work is produced by ordered molecular motion.

change in entropy = dQ / T

change in entropy = 120 / (273 + 20 ) = 0.409 J/K.

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Answer: True

Explanation:

The specific heat capacity of water is 1 calorie per gram per degree Celsius. This means that 1 gram of water will absorb 1 calorie of heat for every 1 degree Celsius increase in temperature.

In this case, we have 32.0 grams of water that is heated from 25.0 degrees Celsius to 80.0 degrees Celsius. The change in temperature is therefore 80.0 - 25.0 = 55.0 degrees Celsius.

The amount of heat absorbed by the water is therefore 32.0 x 55.0 = 1760 calories.

To convert calories to joules, we can use the following conversion factor:

1 calorie = 4.184 joules

Therefore, the amount of heat absorbed by the water in joules is 1760 x 4.184 = 7374 joules.

Therefore, the answer to your question is that 32.0 grams of water absorbs 7374 joules of heat when it is heated from 25.0 degrees Celsius to 80.0 degrees Celsius.

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Answer:

88

Explanation:

because I know the answer.

ANSWER

EXPLANATION

We want to find the angle of reflection of the ray of light.

According to the law of reflection, the angle of reflection must be equal to the angle of incidence of a ray of light:

Therefore, the angle of reflection of the ray of light is:

That is the answer.