Find the speed of the waves on an 800.0 mg violin string 21.1-cm long if the fundamental frequency is 922.0 hz.

The persοn is mοving at a speed οf 55 miles per hοur in the Sοuth directiοn when the persοn is 50 miles West and 70 miles Sοuth οf the car, and the distance between them is increasing at a rate οf 55 miles per hοur.

Tο determine the speed at which the persοn is mοving, we can use the cοncept οf relative velοcity.

Let's cοnsider the hοrizοntal and vertical cοmpοnents separately:

Hοrizοntal Cοmpοnent:

The persοn is walking due East, which is perpendicular tο the Nοrth directiοn οf the car. Therefοre, the hοrizοntal cοmpοnent οf the persοn's velοcity dοes nοt affect the speed at which the persοn is mοving away frοm the car.

Vertical Cοmpοnent:

The persοn is 70 miles Sοuth οf the car, and the distance between them is increasing at a rate οf 55 miles per hοur. This indicates that the persοn's vertical pοsitiοn is changing with time. Since the persοn is mοving in the Sοuth directiοn and the distance is increasing, the persοn's speed can be determined by the rate οf change οf the vertical distance.

Given that the distance is increasing at a rate οf 55 miles per hοur, the persοn's speed in the Sοuth directiοn is 55 miles per hοur.

Therefοre, the persοn is mοving at a speed οf 55 miles per hοur in the Sοuth directiοn when the persοn is 50 miles West and 70 miles Sοuth οf the car, and the distance between them is increasing at a rate οf 55 miles per hοur.

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Answer:

Work done= Energy transferred

Explanation:

Work is the transfer of energy. In physics we say that work is done on an object when you transfer energy to that object. If you put energy into an object, then you do work on that object (mass).

The name for the radio frequency window astronomers use to search for extraterrestrial communication is water hole .

The waterhole, or water hole, is an especially quiet band of the electromagnetic spectrum between 1420 and 1662 megahertz, corresponding to wavelengths of 21 and 18 centimeters, respectively. It is a popular observing frequency used by radio telescopes in radio astronomy.

Bernard M. Olive have said  that the waterhole is a  band for communication with extraterrestrial intelligence, hence the name  watering hole is a vernacular reference to a common place to meet and talk.

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3.The ranking of quantities in decreasing order of distance is as follows: 1 Mm (Megameter) > 1 km (Kilometer) > 100 m (Meter) > 1 cm (Centimeter) > 50 mm (Millimeter) > 1 mm (Millimeter) > 5 million nm (Nanometer).

8. A) When the size of a milk chocolate bar is reduced to 5.000 g, the amount of sugar in milligrams is approximately 73.15 mg.

b) The percentage of sugar in a 14.630 g milk chocolate bar is approximately 63.60%.

10 A) 4.1 ounces of a steroid ointment is approximately 120 grams.

D) Each blueberry high-fiber muffin contains approximately 24 grams of dietary fiber.

1. Ranking the quantities in decreasing order of distance:

1 Mm (Megameter) --> 1 km (Kilometer) --> 100 m (Meter) --> 50 mm (Millimeter) --> 1 cm (Centimeter) --> 1 mm (Millimeter) --> 5 million nm (Nanometer)

2. a). To find the amount of sugar in milligrams when the size of the milk chocolate bar is reduced to 5.000 g, we can use the proportion:

14.630 g / x = 5.000 g / 1000 mg

Solving for x, we get:

x = (5.000 g * 14.630 g) / 1000 mg ≈ 73.15 mg

So, when the chocolate bar size is reduced, the amount of sugar in milligrams will be approximately 73.15 mg.

b). To calculate the percentage of sugar in a 14.630 g milk chocolate bar, we use the formula:

Percentage = (Amount of sugar / Total weight) * 100

Percentage = (9.315 g / 14.630 g) * 100 ≈ 63.60%

So, the percentage of sugar in a 14.630 g milk chocolate bar is approximately 63.60%.

10. a). To convert 4.1 ounces of a steroid ointment to grams, we use the conversion factor:

1 lb = 16 oz, 1 lb ≈ 453.592 g

4.1 oz * (1 lb / 16 oz) * 453.592 g ≈ 119.0792 g ≈ 120 g (to two significant figures)

So, the pharmacist needs to prepare approximately 120 grams of ointment.

D). If blueberry high-fiber muffins contain 51% dietary fiber and a package weighing 16 oz contains six muffins, we can calculate the amount of fiber in each muffin as follows:

Amount of fiber per muffin = (Weight of one muffin * Percentage of dietary fiber) / 100

Amount of fiber per muffin = (16 oz / 6) * (51 / 100) * 28.3495 g ≈ 24 g (to two significant figures)

Each blueberry high-fiber muffin contains approximately 24 grams of dietary fiber.

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Answer:

They transmit by vibration through mediums such as air.  So #3 is most logical answer.

Explanation:

It is in fact vibration of air (sound waves) which is transformed by the tympanic membrane in the ear of human to audible sounds.

++++++++++++++++++++++++++++++++++++++++++++++

Sound travels slower than light

Move faster in water than air.

Wind blowing through leaves and other objects creates sounds.

Answer:

(Question) Which type of wave needs a medium to travel?

(Answer) sound waves, because they travel by oscillating molecules

(Question) What do both sound and light waves transfer?

(Answer) energy

(Question) How does an increase in amplitude affect sound and light waves?

(Answer) louder sound and brighter light

(Question) What happens to the wavelength when the frequency increases?

(Answer) The wavelength decreases.

(Question) Which of the following is true about sound waves?

(Answer) Sound moves faster in the ocean than in the air.

Explanation:

i just did the quick check

Answer:

Platinum

Explanation:

The specific heat of a substance gives the amount of energy it takes to raise the temperature.

Answer:

Water Waves

Water waves are an example of waves that involve a combination of both longitudinal and transverse motions. As a wave travels through the waver, the particles travel in clockwise circles. The radius of the circles decreases as the depth into the water increases.

Explanation:

Water waves are defined as a combination of longitudinal and transverse waves.

One type of wave that exhibits both longitudinal and transverse motions is water waves. While a wave is travelling through the waver, particles are moving in clockwise circles. The radius of the circles gets smaller as the water depth gets deeper.

In fluid dynamics, the term "dispersion of water waves" refers to frequency dispersion or the fact that waves with different wavelengths move at different phase speeds.

Water waves in this sense are waves that move across the surface of the water, with gravity and surface tension acting as restoring forces.

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Answer:

the cross section refers to the way in which it is wound, in general to the circle

circle does not depend on what it has inside

Explanation:

A solenoid is a wire wound in general in a circular shape, even when it is not forced, the cross section refers to the way in which it is wound, in general to the circle and is joined to determine the area

          A = π r²

This circle does not depend on what it has inside, that is, it is the same section in the air, in a liquid or with a solid inside,

If an object has a balanced force on it, there is a possibility that the object may be in a position i.e. there is no change in speed and direction of the body.

If the forces acting on an object is balanced, it means that the net force acting on the body is zero.

According to Newton's law of motion, an object will continue in a state of motion in a straight line unless acted upon by an external force.

This external force might be a balanced or unbalanced force. Hence if an object has a balanced force on it, there is a possibility that the object may be in a position i.e. there is no change in speed and direction of the body.

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Explanation:

velocity is distance divided by time.

so

the average speed of the ball is 10m/20s

= 0.5 m/s

Answer:

hi my Friend

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Explanation:

Answer:

25

Explanation:

I just did this

The equivalent capacitance of the combination when connected in series is 1.66 μF and the equivalent capacitance of the combination when connected in parallel is 19.61 μF.

The capacitance C₁ is given as 11.8 μF.

The capacitance C₂ is given as 4.25 μF.

The capacitance C₃ is given as 3.56 μF.

If the capacitors are connected in parallel, the equivalent capacitance, C eq₁ is calculated as,

C eq₁ = C₁ + C₂ + C₃

C eq₁ = 11.8 μF + 4.25 μF + 3.56 μF = 19.61 μF

If the capacitors are connected in series, the equivalent capacitance, C eq₂ is calculated as,

1/C eq₂ = 1/C₁ + 1/C₂ + 1/C₃

1/C eq₂ = 1/11.8 + 1/4.25 + 1/3.56

1/C eq₂ = 0.085 + 0.235 + 0.281

1/C eq₂ = 0.601

C eq₂ = 1.66 μF

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Given that the balloon is negatively charged and it is touching a wooden wall, the ballon will perform all the actions given in the answer choices.

A negatively charged balloon will pull positive charge on the wall surface towards it, since opposite charges attract each other.

Also, the negatively charged balloon touching a wooden wall will push any negative charge in the wall away from it. This is because like charges repel each other.

The negatively charged balloon also polarizes the molecules on the wall. This is because in molecules, atoms are bonded together since protons in one atom attract the electrons in the cloud of another atom.

Therefore, the correct choice is All of the above

ANSWER:

All of the above

Answer:

The kinetic energy decreases.

Explanation:

Friction is defined as a opposite force to motion. If friction is the only force acting on an objects, its kinetic energy decreases.

It is so because due to resistive force or friction, kinetic energy is converted to heat energy and that reduces the total kinetic energy in the system.

Hence, the correct answer is "The kinetic energy decreases."

The assumptions must be made base in the object’s kinetic energy in a situation whereby frictional force is the only force acting on an object is A:The kinetic energy decreases.

Therefore, option A is correct.

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Answer:

Both

Explanation:

Both of them are part of newtons laws of motion

A reasonable estimate for the height of the walls in an ordinary American home is 2.5m.

Building gauge is of two sorts one is known as Rough Cost Estimate. This gauge won't depict the specific expense of the structure, however it can provide you with the rough expense worth of the structure that will help adequately in overseeing cash for the structure. Harsh Cost Estimate is directed in various ways for various sort of structures. The rough complete wall length is found in running meters in this framework and this all out length accumulated by the rate per running meter of the wall gives an actually solid cost. Assessment hypothesis is a part of insights that arrangements with assessing the upsides of boundaries in light of estimated experimental information that has an irregular part. The boundaries depict a fundamental actual setting so that their worth influences the circulation of the deliberate information.

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Explanation:

t = usin©/g

Where t is the time to reach the maximum height

Time spent in air is T = 2t

Hence, T = 2usin©/g

T = 2 x 20 x sin 65°/ 9.8

T = 3.69s

Answer:

In what forms is the electrical energy that is supplied to a string of decorative lights dissipated? It is converted to thermal energy and light energy.

Answer:

Energy loss. When energy is transformed from one form to another, or moved from one place to another, or from one system to another there is some energy loss. This means that when energy is converted to a different form, some of the input energy is turned into a highly disordered form of energy, like heat.

Energy losses in lights are very large; most of the input energy is lost in the form of heat energy.

Explanation:

The dot diagram of an object moving at constant speed to the right is in the diagram uploaded.

Constant speed refers to a situation in which an object moves in such a way that its rate of change of position is the same at all times. This means that the object is covering an equal distance in equal intervals of time.

In other words, it moves with a uniform velocity, meaning that its speed does not change.

For example, if a car is traveling at a constant speed of 60 miles per hour, it covers 60 miles in each hour of its journey, regardless of whether it has been traveling for 1 hour or 5 hours.

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Position vector r(t) at time is r(t) = −(3/2)t^2i + 5t^2j + 9t^2k + 5t + 1i + 8k

Given that a particle is traveling in a straight line and is located at point (10, −1, −9) and has speed 5 at time t=0.

The particle moves toward the point (7, 9, 9) with constant acceleration ⟨−3, 10, 18⟩. We need to find the position vector r(t) at time t.

To find the position vector r(t), we need to integrate the given equation for acceleration a(t).  The equation for acceleration is given by;`a(t) = ⟨−3, 10, 18⟩ = −3i + 10j + 18k

Now integrating this, we get the velocity equation,`v(t) = ∫ a(t) dt = ∫ (−3i + 10j + 18k) dt = −3ti + 10tj + 18tk + C`where C is the constant of integration.

Given that the particle has speed 5 at t = 0, we have;v(0) = 5

So substituting the value of t = 0 and v(0) in the velocity equation, we get,`v(0) = −3(0)i + 10(0)j + 18(0)k + C = C = 5

Thus the equation for the velocity v(t) is given by;`v(t) = −3ti + 10tj + 18tk + 5

Now, integrating the velocity v(t), we get the position vector r(t);

r(t) = ∫ v(t) dt

    = ∫ [−3ti + 10tj + 18tk + 5] dt

    = −(3/2)t^2i + 5t^2j + 9t^2k + 5t + C

where C is the constant of integration.

Using the initial condition, that the particle is at point (10, −1, −9) at t = 0;

r(0) = 10i − j − 9k + C = (10, −1, −9)`Solving for C, we get,`C = 1i + 8k

So the position vector r(t) is given by;`r(t) = −(3/2)t^2i + 5t^2j + 9t^2k + 5t + 1i + 8k

Hence the required position vector is r(t) = −(3/2)t^2i + 5t^2j + 9t^2k + 5t + 1i + 8k.

Answer: `r(t) = −(3/2)t^2i + 5t^2j + 9t^2k + 5t + 1i + 8k`

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Answer:

true

Explanation:

Answer:

True.

Explanation:

The car will need 107.64 meters, or approximately 353 feet, to come to a complete stop. It will take several seconds to stop a car traveling at this speed.

The distance and time required to stop a car traveling at 62 miles/hour can be calculated using the formula: d = (v²/2a)

Where d is the distance required to stop the car, v is the initial velocity of the car, and a is the acceleration due to friction or braking. The average value of a when braking is typically between 3 and 4 meters per second squared, or 9.8 to 13.1 feet per second squared.

Let's use 12 m/s² for this example. Here's how we calculate the distance and time required to stop a car traveling at 62 miles/hour: First, convert 62 miles/hour to meters/second. 1 mile = 1609.344 meters,

so: 62 miles/hour × 1609.344 meters/mile ÷ 3600 seconds/hour = 27.78 meters/second.

Now we can use the formula to calculate the distance required to stop the car:  = (v²/2a) = (27.78 m/s)² ÷ (2 × 12 m/s²) = 107.64 meters.

So the car will need 107.64 meters, or approximately 353 feet, to come to a complete stop.

The time required to stop will depend on the braking force and the efficiency of the braking system, but in general, it will take several seconds to stop a car traveling at this speed.

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Approximately 9% of the mechanical energy of the ball is transformed into internal energy of the ball and the floor.

When the ball falls and bounces back up, some of its initial mechanical energy is lost as it is converted into internal energy. The mechanical energy of the ball consists of its potential energy (mgh) when it is at a height of 10.0 m and its kinetic energy (1/2 mv^2) when it is at a height of 9.0 m. The loss in mechanical energy is due to factors like deformation of the ball and floor, sound, and heat generated upon impact.

To calculate the percentage of energy loss, we need to compare the difference in mechanical energy before and after the bounce. The difference is approximately 0.81 J. Dividing this by the initial mechanical energy (81 J) and multiplying by 100 gives us the percentage, which is approximately 9%. Therefore, around 9% of the mechanical energy is transformed into internal energy of the ball and the floor during the bounce.

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No, the sun cannot explain global warming. Global warming is a phenomenon in which the temperature of the Earth's surface and atmosphere is rising continuously due to human activities such as deforestation, burning of fossil fuels, and industrialization.

This increase in temperature cannot be explained only by an increase in solar radiation.There are several factors which contribute to global warming, including greenhouse gases such as carbon dioxide, methane, and water vapor. These gases trap heat in the Earth's atmosphere, which causes the planet's temperature to rise. The sun's radiation does contribute to global warming, but it is not the main cause.

i) To calculate the increase in solar radiation that would cause the Earth to warm up by 1 K, we can use the following formula:ΔS = ΔT / αWhere ΔS is the increase in solar constant, ΔT is the increase in temperature, and α is the Earth's albedo (reflectivity).α = 0.30 is the standard value used for the Earth's albedo.ΔS = ΔT / αΔS = 1 K / 0.30ΔS = 3.33 W/m2So, to explain the increase in temperature of 1 K over the last hundred years, the solar constant would need to increase by 3.33 W/m2.

ii) The observed fluctuation of the solar constant over the past 400 years has been around 0.1% to 0.2%. This is much smaller than the 3.33 W/m2 required to explain the increase in temperature of 1 K over the last hundred years. Therefore, it is unlikely that the sun is the main cause of global warming.

The sun cannot explain global warming. While the sun's radiation does contribute to global warming, it is not the main cause. The main cause of global warming is human activities, particularly the burning of fossil fuels, which release large amounts of greenhouse gases into the atmosphere.

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Choice-D is the only velocity on the list.

(It has a speed and a direction.)

The jet's velocity might be represented by  700 km/h west. Hence, option (D) is correct.

The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.

In this question, 700 h/km, 700 km have different unit that of velocity. So, option (A) and option (B) is not correct. . 700 km/hr has same unit that of velocity.  But it does not has direction. So, option (C) is also incorrect.  700 km/h west has the same unit of velocity with define direction. So, option (D) is correct.

Hence option (D) is correct answer.

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Answer:

As the person moves down the zip wire, her increase in kinetic energy is less than her decrease in gravitational potential energy.

Explanation:

Work is done against the air resistance, causing thermal energy to transfer to the surroundings

The factors that affect the kinetic energy of the person as she reached the bottom will be gravitation, mass, and speed.

Kinetic energy simply means the energy that is possessed by a body due to its motion. It should be noted that when work is done on an object, it speeds up and then gains kinetic energy.

From the complete information, factors that affected the kinetic energy of the person as she reached the bottom of the zip wire include gravitation, mass, and speed.

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The amount of energy of a single photon of light is determined by its frequency.

The Planck-Einstein relation is a fundamental equation that describes the relationship between the energy (E) of a single photon of light and its frequency (f).

where h is Planck's constant, a physical constant with a value of approximately . This equation suggests that the energy of a photon is directly proportional to its frequency. In other words, photons with higher frequencies (such as those in the ultraviolet or x-ray parts of the electromagnetic spectrum) have more energy than those with lower frequencies  (such as those in the infrared or radio parts of the spectrum).

The speed of the photon and the material it moves through can affect its wavelength and therefore its frequency, but they do not directly determine its energy. The time it takes the photon to reach a destination is not directly related to its energy either.

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