A ball with a mass of 0.5 kg is hit with a force of 2.5 N what is its acceleration?

Answer:

A force that acts on a body moving in a circular path and is directed toward the center around which the body is moving.

Explanation:

Answer: a force that acts on a body moving in a circular path and is directed toward the center around which the body is moving.

Explanation: It is drawn into the center of the moving body like a whirl pool  

(a) The frequency of the fundamental is 0.1 Hz, and the frequency of the third harmonic is 0.3 Hz. (b) the wavelength of the sound wave created by the vibrating wire for the third harmonic is 0.67 m.

a) To find the frequency of the fundamental and third harmonic of a steel wire, we can use the formula:

f = nv/2L

Where f is the frequency, n is the harmonic number, v is the speed of the wave in the medium (in this case, the steel wire), and L is the length of the wire.

We are given that the steel wire is 1m long, has a mass per unit length of 2000kg/m, and is under a tension of 80N. We can use the formula:

v = √(T/μ)

Where T is the tension and μ is the mass per unit length.

Substituting the given values, we get:

v = √(80/2000) = 0.2 m/s

For the fundamental frequency (n=1), we have:

f1 = (1 x 0.2)/(2 x 1) = 0.1 Hz

For the third harmonic (n=3), we have:

f3 = (3 x 0.2)/(2 x 1) = 0.3 Hz

Therefore, the frequency of the fundamental is 0.1 Hz, and the frequency of the third harmonic is 0.3 Hz.

b) To find the wavelength of the sound wave created by the vibrating wire for the third harmonic, we can use the formula:

λ = 2L/n

Where λ is the wavelength, L is the length of the wire, and n is the harmonic number.

Substituting the given values, we get:

λ = 2 x 1/3 = 0.67 m

Assuming the speed of sound in air is 345m/s, we can use the formula:

v = fλ

Where v is the speed of sound, f is the frequency, and λ is the wavelength.

Substituting the values for the third harmonic, we get:

345 = 0.3 x 0.67

Therefore, the wavelength of the sound wave created by the vibrating wire for the third harmonic is 0.67 m.

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Answer:

elephant

Explanation:

Answer:

elephant

Explanation:

Explanation:

Here,

Given,

Mass(m)=40 kg

Gram=9.8m/s

Now,

Weight=m x g

or, weight= 40x9.8

=392.0

Hope you have understood

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Answer:

The right answer of 8 a is 392 Newton

The right answer of 8b is 10 kg

Look at the attached picture

Hope it will help you

Good luck on your assignment

The wind direction and speed in Buffalo, NY in 12 hours will be from the south at 5 to 8 mph. The wind will become west in the afternoon.

The temperature will be a high of 78 degrees Fahrenheit. The sky will be sunny. There is no chance of precipitation.

The wind direction and speed in Buffalo, NY in 12 hours will be from the south at 5 to 8 mph. This means that the wind will be blowing from the south towards the north. The wind speed will be between 5 and 8 miles per hour. The wind will become west in the afternoon. This means that the wind will start blowing from the west towards the east. The temperature will be a high of 78 degrees Fahrenheit. This means that the temperature will be warm and comfortable. The sky will be sunny. This means that there will be no clouds in the sky and the sun will be shining. There is no chance of precipitation. This means that it will not rain or snow.

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Answer:

It depends...

Explanation:

If you know how much watts the pair of hair straighteners use, you can use that as the energy every second. A normal flat iron for hair would be 300 watts, so we could say that it uses 300 jolts or watts of energy per second.

Answer:

the sising of neviage

Explanation:

A coiled spring would be useful in illustrating a d. compressional wave. A compressional wave, also known as a longitudinal wave, is a type of wave where the disturbance or oscillation occurs parallel to the direction of wave propagation.

A coiled spring can be used to demonstrate this type of wave by compressing and expanding the coils of the spring. As the coils are compressed, they represent the regions of compression in the compressional wave. When the coils expand, they illustrate the regions of rarefaction. The coiled spring visually represents the alternating pattern of compression and rarefaction characteristic of compressional waves. A compressional wave, also known as a longitudinal wave, is a type of wave where the disturbance or oscillation occurs parallel to the direction of wave propagation. In a compressional wave, particles within the medium oscillate back and forth in the same direction as the wave is traveling.

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Answer:

C. answer pa brailest need lang po please

D. Resource Supply this would be directly affected first then the rest would follow after a period of time.

Answer:

The magnitude of the box's acceleration down the slope is approximately 2.87 m/s².

Explanation:

To find the magnitude of the box's acceleration down the slope, follow these steps:

STEP 1. Determine the gravitational force acting on the box along the incline. This can be calculated using the formula: F_gravity = mg * sin(angle), where m is the mass of the box, g is the gravitational constant (approximately 9.81 m/s²), and angle is the angle of the inclined plane (39° in this case).

STEP 2. Calculate the force due to kinetic friction acting against the box's motion. This can be found using the formula: F_friction = μ * N, where μ is the coefficient of kinetic friction (0.47), and N is the normal force acting on the box. Since the box is on an inclined plane, the normal force is equal to the component of the gravitational force perpendicular to the incline: N = mg * cos(angle).

STEP 3. Find the net force acting on the box by subtracting the frictional force from the gravitational force: F_net = F_gravity - F_friction.

STEP 4. Finally, calculate the acceleration of the box using Newton's second law: F_net = m * a, where a is the acceleration. Solve for a: a = F_net / m.

STEP 5. Plug in the values from steps 1-4 to find the magnitude of the box's acceleration down the slope. Note that the mass of the box (m) will cancel out in the final equation, so it is not needed to find the acceleration:

a = (mg * sin(angle) - μ * mg * cos(angle)) / m

a = g * (sin(angle) - μ * cos(angle))

a = 9.81 * (sin(39°) - 0.47 * cos(39°))

a ≈ 2.87 m/s²

The magnitude of the box's acceleration down the slope is approximately 2.87 m/s².

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Answer: mechanical?

Explanation:

Answer:

Density= 2.78 g/cm³

Relative density=2.8

Explanation:

To calculate the density of the cube we have to use the formula ρ=mass/volume

ρ stands for density.

So now we don't have the volume of the cube and to find the volume of the cube we have to use the formula a³

3³= 9 cm³

Now plug in the values. ρ= 25 g/9 cm³

ρ= 2.78 g/cm³

To find the relative density, we have to use the formula ρsample/ρH20

The sample means the density of the substance earlier. We do not know the density of water but it is constant at 997 kg/m³.

Now we have to make the units same so you change the unit of the density of cube to kg/m³

So, 25/1000= 0.025 kg

9/100×100×100 (because cm³ which means that there should be 3 meters to change the unit and to conver cm to meter we need to divide by 100 so 9cm/100, 9cm²/100×100, 9cm³/100×100×100)

=0.000009 m³

The new density= 0.025 kg/ 0.000009 m³

= 2777.78 kg/m³

Now plug the values into the formula:

relative density= 2.777.78 kg/m³ / 997 kg/m³

=2.8

There is no unit since kg/m³ and kg/m³ cancels

Answer:

I don't really understand what you are asking but... i can try to help

The formula for potential energy depends on the force acting on the two objects. For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters.

Hope this helps sorry I couldn't answer it☺️

When the velocity of an object changes, it is acted upon by a force

Hello! :3

I'm pretty sure you should be coloring the lines. The green line should be convergent, the blue line should be transformed,  and the red line should be divergent.

Hope this helps! I'm not 100% sure! :)))))

Answer:

180

Explanation:

Work done= Force x distance

So rearrange the formula to find the force

Force= Work done/distance

Force= 6/30

Force= 1/5 N or 0.2 N

Despite being massless, photons do have momentum, and it is directly related to their wavelength. This relationship is described by the equation p = λ, where p is the momentum of the photon, λ is its wavelength, and h is Planck's constant. This relationship was first proposed by Einstein in his theory of the photoelectric effect. The correct answer is (d).

The fact that photons have momentum has been demonstrated through various experiments, such as the Compton scattering experiment, which showed that photons can transfer momentum to electrons. The momentum of photons is also important in understanding phenomena such as the Doppler effect, where the wavelength of light is affected by the motion of the source or observer.

It is important to note that while photons have momentum, they do not have mass, which sets them apart from other particles such as electrons. This means that the momentum of a photon cannot be calculated using the classical formula p = mv, where m is the mass of the particle and v is its velocity. Instead, the momentum of a photon is entirely determined by its wavelength.

In summary, while photons are massless, they do have momentum, which is related to their wavelength through the equation p = λ. This relationship has been demonstrated through various experiments and is an important aspect of understanding the behavior of light.

Therefore, This relationship was first proposed by Einstein in his theory of the photoelectric effect. The correct answer is (d).

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Answer:

An electrical potential is a difference in electric potential energy.

Explanation:

Electric potential is a location-dependent quantity that expresses the amount of potential energy per unit of charge at a specified location. ... If the electric potential difference between two locations is 3 volts, then one coulomb of charge will gain 3 joules of potential energy when moved between those two locations.

The electric potential, or voltage, is the difference in potential energy per unit charge between two locations in an electric field.

To use all the energy from consuming a small order of french fries, the person would need to climb the 11.0 m stairway approximately 17.0 times.

The energy content of the small order of french fries is given as 241.0 Cal. We can convert this value to joules since the unit of energy in the metric system is the joule (J). 1 calorie (Cal) is equal to 4.184 joules (J). To use all the energy from consuming a small order of french fries, the person would need to climb the 11.0 m stairway approximately 57 times.

Energy content of the small order of french fries:

241.0 Cal × 4.184 J/Cal = 1007.144 J

Work done to climb the stairway:

(55.0 kg) × (11.0 m) × (9.8 m/s²) = 59294 J

Number of climbs needed to use all the energy:

1007.144 J ÷ 59294 J ≈ 17.0

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The momentum of the car, given the data d from the question is 0.0462 Kg.m/s

Momentum is defined as the product of mass and velocity. It is expressed as

Momentum = mass × velocity

With the above formula, we can determine the momentum of the car. Details below

The momentum of the car can be on rained as follow:

Momentum = mass × velocity

Momentum of car = 0.03 × 1.54

Momentum of car = 0.0462 Kg.m/s

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Answer:

to heat spaces in buildingss

Explanation:

We can use the formula:

P = VI

where P is the power in watts, V is the voltage in volts, and I is the current in amperes.

For a 75-watt lightbulb,

75 = 120 × I

I = 0.625 A

To find out how many bulbs can be used without blowing a 17 A fuse, we divide the maximum current by the current for one bulb:

17 A / 0.625 A = 27.2

Therefore, we can use 27 75-watt lightbulbs without blowing a 17 A fuse.

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Answer:

Gravity is the force that gives weight to objects and causes them to fall to the ground when dropped. Two major factors, mass and distance, affect the strength of gravitational force on an object. You witness the first factor in everyday life - more massive objects are heavier. The second factor, distance, is less familiar, as it takes a distance of many thousands of kilometers to significantly weaken the pull of Earth's gravity. Newton's law of gravitation describes very accurately how mass and distance affect the force of gravity.

It's D.

Weight always points downward.

The normal force always points perpendicular to the surface.

Friction opposes motion, so it points in the direction opposite the direction in which the block is moving.

Answer:

Its the third option

Explanation:

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Since a 1.03 × 10² mA current is used to charge up the parallel plate capacitor and a large square piece of paper is placed between the plates and parallel to them so it sticks out on all sides, the value of ∫B.ds around the perimeter of the paper is 1.29 × 10⁻⁷ Tm

This shows the relationship between the magnetic field, B, the path of integration, ds and the current enclosed by the magnetic field, i.

Ampere's law is given mathematically as

∫B.ds = μ₀i where

Given that for the large square piece of paper, the current used to charge the capacitor is

Since ∫B.ds = μ₀i

Substituting the values of the variables into the equation, we have

∫B.ds = μ₀i

∫B.ds = 4π × 10⁻⁷ Tm/A × 1.03 × 10⁻¹ A

∫B.ds = 4.12π × 10⁻⁸ Tm

∫B.ds = 12.94 × 10⁻⁸ Tm

∫B.ds = 1.294 × 10⁻⁷ Tm

∫B.ds ≅ 1.29 × 10⁻⁷ Tm

So, the value of ∫B.ds around the perimeter of the paper is 1.29 × 10⁻⁷ Tm

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(a) The divergence angle of the Gaussian beam can be calculated using the formula θ = λ / (π * w0). (b) To decrease the beam spread from a 40° cone angle to a 10° cone angle, a lens system needs to be designed. (c) The Numerical Aperture (NA) of the receiver can be calculated using the formula NA = n * sin(θ).

(a) The divergence angle of the Gaussian beam can be calculated using the formula θ = λ / (π * w0), where λ is the wavelength and w0 is the spot size. Given that the spot size is 1 mm (or 0.001 m) and the wavelength is 0.82 µm (or 8.2 x 10^-7 m), we can substitute these values into the formula to find the divergence angle. The divergence angle is approximately 0.105 radians.

To calculate the spot size at 5 km, we can use the formula w = w0 + θ * z, where w0 is the initial spot size, θ is the divergence angle, and z is the propagation distance. Plugging in the values w0 = 1 mm, θ = 0.105 radians, and z = 5 km (or 5000 m), we can calculate the spot size at 5 km. The spot size at 5 km is approximately 1.525 mm.

(b) To decrease the beam spread from a 40° cone angle to a 10° cone angle, a lens system needs to be designed. Given that the source is a square planar radiator measuring 20 µm on a side, the initial beam spread corresponds to a cone with a full-cone angle of 40°. To decrease the cone angle to 10°, a lens system can be used to focus and collimate the light beam.

The specific design of the lens system depends on the requirements and constraints of the system. However, in general, a combination of lenses, such as converging and diverging lenses, can be used to manipulate the light beam. By properly selecting and arranging the lenses, the beam spread can be reduced to the desired 10° cone angle. The image size and position will vary depending on the specific lens system design.

(c) The Numerical Aperture (NA) of the receiver can be calculated using the formula NA = n * sin(θ), where n is the refractive index of the medium and θ is the half-angle subtended by the receiver's photodetector. In this case, the receiver has a 10-cm focal length and a 1-cm photodetector diameter, which corresponds to a half-angle of θ = arctan(0.5/10) ≈ 2.86°.

Given that there is an inserted medium with a refractive index of n = 1.5 between the lens and detector, we can substitute these values into the NA formula. The Numerical Aperture of the receiver is approximately NA = 1.5 * sin(2.86°) ≈ 0.076.

The material dispersion (M) of a laser diode for a given wavelength can be calculated using the formula M = (dλ / λ), where dλ is the change in wavelength and λ is the original wavelength. However, in the provided question, the value for the change in wavelength (dλ) is not given, so it's not possible to calculate the material dispersion of the laser diode.

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The clause that is used to group the output of a stats command by a specific name is called the by clause.

This clause allows you to group your data by one or more fields, which can be specified after the "by" keyword. The resulting output will show the values of the specified fields along with the results of the stats command.
For example, if you want to group your data by a field called "product", you would use the "by product" clause in your stats command. This would group the output by the product field and show the results of your stats command for each product.
Using the "by" clause can be helpful when you want to analyze your data based on specific groups or categories. It allows you to see the results of your stats command broken down by those categories, which can give you a more detailed understanding of your data.
In summary, the "by" clause is a powerful tool that can be used in conjunction with the stats command to group your data by specific fields. This can provide valuable insights into your data and help you make more informed decisions.
The clause you are referring to is the "GROUP BY" clause. It is used in conjunction with the "stats" command (or similar aggregate functions) to organize the output based on a specific column or attribute name. This allows for easier analysis and interpretation of the data by grouping similar items together and summarizing their corresponding values. The "GROUP BY" clause is a crucial element in database management systems and data processing tasks, as it enables users to obtain meaningful insights from large datasets in a structured and efficient manner.

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