A block initially at rest on a horizontal, frictionless surface is accelerated by a constant horizontal force of 5.0 newtons. If 15 joules of work is done on the block by this force while accelerating it, the kinetic energy of the block increases by a. 3.0 J b. 15 J c. 20 J d. 75 J

When the displacement of a 500 g mass, undergoing simple harmonic motion, is defined by the function :  x=-3.5sin(π/2t+(5π)/4).The maximum potential energy is 7.56J

Simple harmonic motion, or SHM, is a particular form of periodic motion of a body that results from a dynamic equilibrium between an inertial force that is proportional to the body's acceleration away from the static equilibrium position and a restoring force on the moving object which is directly proportional to the magnitude of the object's displacement and applies towards the object's equilibrium position.

Given :

k = 1.234N/m

x=3.5

Now by applying the value of spring constant, we can find the maximum potential energy.

PE=\(\frac{1}{2} kx^{2}\)

PE=1/2*1.234*3.5^2

PE=7.56J

Hence, The maximum potential energy is 7.56J

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The complete question is :

The displacement of a 500 g mass, undergoing simple harmonic motion, is defined by the function :

x=-3.5sin(π/2t+(5π)/4)

Find maximum potential energy.

Answer:

Hands opening a bottle with bottle opener

Answer: Sexual reproduction in fungi

Explanation:

Genetic recombination is the transfer of hereditary matter between various organisms that leads to the generation of children with orders of characteristics that vary from those located in either one of the parents.

There are three main types of galaxies: spiral, elliptical, and irregular. Each has distinguishing characteristics that set them apart from one another.

Spiral galaxies are characterized by their rotating disk-like structure with spiral arms. They have a central bulge composed of older stars, surrounded by a flat disk containing younger stars, gas, and dust. Spiral galaxies can be further classified into barred and unbarred, with barred spirals having a central bar structure.

Elliptical galaxies are more spherical or elliptical in shape, and they consist mainly of older stars with little gas and dust. These galaxies have a smooth, featureless appearance and can vary in size from dwarf ellipticals to giant ellipticals. They do not exhibit spiral arms or a central bar like spiral galaxies do.

Irregular galaxies do not fit into the spiral or elliptical categories due to their chaotic shape and structure. These galaxies are rich in gas and dust, and often contain regions of active star formation. Irregular galaxies may be influenced by gravitational interactions with nearby galaxies or have experienced a collision or merger event.

In summary, spiral galaxies are known for their rotating disk and spiral arms, elliptical galaxies for their smooth, featureless appearance, and irregular galaxies for their chaotic structure and active star formation.

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The number of calories that you can eat a day without gaining weight depends on your activity level

For there to be a balance between the number of calories consumed through food and weight gain, it is important to maintain a good level of physical activity that helps us to maintain a healthy weight and at the same time does not allow an increase in weight and body mass.

All this is because the relationship between daily calories consumed and weight gain is directly proportional to the level of physical activity that we do.

It is the amount of mass associated with a person's body

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Answer:

4

Explanation:

the temperature at and above which vapor of the substance cannot be liquefied, no matter how much pressure is applied.

The magnitude of the magnetic field is 8.70 T (Tesla).Answer: 8.70.

Given Data Number of turns (N) = 2190Total resistance (R) = 44 ΩArea of each turn (A) = 4.56 × 10⁻⁴ m²Charge induced (q) = 9.02 × 10⁻³ C Formula used Faraday's Law of electromagnetic induction states that:ε = -NdΦ/dt where ε is the induced EMF, N is the number of turns, Φ is the magnetic flux and t is the time.

As the magnetic field is zero, flux Φ₀ = 0Therefore,ε = -NdΦ/dt We know that, Current I = q/t

Therefore,ε = -NdΦ/dt = -Nd(BA)/dt = NBA/dt

Where B is the magnetic field strength We know that, B = ε/(NA/dt) = (q/dt)/(NA) = (9.02 × 10⁻³ C)/(2190 × 4.56 × 10⁻⁴ m²) = 8.70 T

Therefore, the magnitude of the magnetic field is 8.70 T (Tesla).Answer: 8.70.

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Nuisance static charges are more likely to occur when the air is dry.

When the air is dry, it is not able to hold a sufficient amount of moisture or humidity. When the moisture content of the air is low, the air has a low electrical conductivity, which increases the likelihood of static charges.Static electricity can be created by the rubbing of two objects. When these objects are separated after rubbing, they are left with a static electric charge. The strength of the electric charge is determined by the materials used to create the two objects. Some materials are better at holding static charges than others.

Dry air only exacerbates the situation. Static charges can be a nuisance for a variety of reasons. They can cause shocks, interfere with electronic devices, and can even cause damage to sensitive equipment. In order to reduce the occurrence of static charges, it is important to ensure that the air in your environment is sufficiently humid. This can be achieved by using a humidifier or by simply placing bowls of water around the room. Additionally, anti-static products, such as sprays and mats, can be used to reduce the occurrence of static charges.

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You will feel yourself pressed against the back of your spacecraft with great force, making it difficult to move. This is because when you accelerate, the force of gravity is increased, causing you to feel an increased weight.

This option is the correct one. As per Newton's second law, the force of the body is directly proportional to the mass and acceleration. Here, the acceleration is 9.8 m/s2, which means you will feel yourself pressed against the back of your spaceship with great force, making it difficult to move, you will feel the same weight as you do on earth.

This is an incorrect option because the acceleration is greater than 1g, which means the weight will be greater than the actual weight.you will be floating weightlessly. This is an incorrect option because there is an acceleration, which means you will not be floating weightlessly.you will feel weight, but more than on earth. This is an incorrect option because the acceleration is greater than 1g, which means the weight will be greater than the actual weight.

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Answer:

please let me know when you find it

Explanation:

i have the same question and cant find it

Answer:

It’s 5m/s^2

Explanation:

To determine the value of k in the given wave function, we need to relate the kinetic energy of the electron to the value of k.

The kinetic energy (KE) of a particle with mass m can be related to its momentum (p) by the equation:

KE = p^2 / (2m)

For a free particle, the momentum (p) can be related to the wave vector (k) as:

p = ℏk

where ℏ is the reduced Planck's constant.

Substituting the expression for momentum into the equation for kinetic energy, we have:

KE = (ℏ^2 k^2) / (2m)

Given that the kinetic energy of the electron is 9.0 eV, we can express it in joules by converting the electronvolt (eV) to joules:

1 eV = 1.602 x 10^-19 J

So, 9.0 eV = 9.0 x 1.602 x 10^-19 J

Now we can equate the expression for kinetic energy to the given value and solve for k:

(ℏ^2 k^2) / (2m) = 9.0 x 1.602 x 10^-19 J

To solve for k, we need to know the mass of the electron (m) and the value of ℏ (reduced Planck's constant).

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a. The object having weight 700N in air, experiences buoyancy force of 200N in water.

b. The density of the object is 3.5g/cm3

a. Archimedes Principle:

When a body is partially or fully immersed in a fluid, its weight appears to decrease and apparent decrease in its weight is equal to weight of the fluid displaced by the body.

The object weight in air is 700N and it's weight in water is 500N.

Buoyancy force = Apparent loss of weight

= 700N - 500N

= 200N

b. Density of the object:

Buoyancy force = Vdg ( where v is volume of the object, d is the density of liquid and g is gravity of earth)

200 = Vdg

200 = V × 1000 × 10 (density of water= 1000kg/m3)

V = 2/100

m/d = 2/100 (V = m/d ,where d is density of solid)

(mg = 700N given in question)

(m = 70)

d = 70× 100/2

d = 3500kg/m3

= 3.5g/cm3

hence density of the object is 3.5g/cm3

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ANSWER

False

EXPLANATION

We want to know if the image produced by a convex lens is always real.

A convex lens can form real images but it can also form virtual images. This will only occur when the object is placed in between the focus and optical center of the lens.

In this case, the image is erect and enlarged and magnification is always greater than 1.

The answer is false.

It is more difficult to start moving a heavy carton from rest than it is to keep pushing it with constant velocity because of static friction.

Static friction refers to the resistance encountered when attempting to initiate the movement of two objects that are in contact with each other but not currently in motion relative to each other. When an object is at rest, the force of static friction acts in the opposite direction to any force applied to it.

In this case, the force applied to the carton is the force needed to start moving it from rest. The force of static friction is greater than the force applied to the carton, making it difficult to start moving the carton from rest.

Once the carton is moving with constant velocity, the force of static friction is no longer acting on it. The only force acting on the carton is the force that is applied to keep it moving at a constant velocity. This force is equal to the force of kinetic friction which is less than the force of static friction.

To summarize, the initial effort required to overcome the static friction between a heavy carton and its resting position is greater compared to the continuous force needed to maintain its constant velocity. The force of static friction is greater than the force applied to the carton, making it difficult to start moving the carton from rest.

Once the carton is moving with constant velocity, the force of static friction is no longer acting on it, and the only force acting on the carton is the force that is applied to keep it moving at a constant velocity.

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The height of the hill, given the radius and mass of the Earth can be found to be 2.5 km.

We can use the conservation of energy to solve this problem. The potential energy of the stone at the top of the hill is equal to its gravitational potential energy, which is given by:

PE = mgh

Solving for height , we get:

h = (G x M x m) / (R x m x g)

h = (6.67 x 10^-11 x 6 x 10^24 x 40) / ((6.4 x 10^6 + h) x 9.8)

h = 2.5 km

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Answer:

(i) The particle has a period of 0.3 seconds.

(ii) The angular velocity of the particle is a20.944 radians per second.

(iii) The linear velocity of the particle is 1.047 meters per second.

(iv) The linear acceleration of the particle is 21.933 meters per square second.

Explanation:

Statement is incomplete and have mistakes, complete and correct form is presented below:

A particle makes 800 revolutions in 4 minutes of a circle with a radius of 5 centimeters. Find (i) its period, (ii) its angular velocity, (iii) its linear velocity and (iv) its acceleration.

(i) The period of the particle (\(T\)), in seconds, is the time taken to make a complete revolution:

\(T = \frac{4\,min \times \frac{60\,s}{1\,min} }{800\,rev}\)

\(T = 0.3\,s\)

The particle has a period of 0.3 seconds.

(ii) The angular velocity (\(\omega\)), in radians per second, is determined by the following formula:

\(\omega = \frac{2\pi}{T}\) (1)

\(\omega = \frac{2\pi}{0.3\,s}\)

\(\omega \approx 20.944\,\frac{rad}{s}\)

The angular velocity of the particle is a20.944 radians per second.

(iii) The linear velocity (\(v\)), in meters per second, is calculated by the following formula:

\(v = R\cdot \omega\) (2)

Where \(R\) is the radius of the circle, in meters.

If we know that \(R = 0.05\,m\) and \(\omega \approx 20.944\,\frac{rad}{s}\), then the linear velocity of the particle is:

\(v = (0.05\,m)\cdot \left(20.944\,\frac{rad}{s} \right)\)

\(v = 1.047\,\frac{m}{s}\)

The linear velocity of the particle is 1.047 meters per second.

(iv) Since angular velocity is constant, linear acceleration of the particle (\(a\)), in meters per square second, is entirely radial. Acceleration can be found by means of this expression:

\(a = \omega^{2}\cdot R\) (3)

If we know that \(R = 0.05\,m\) and \(\omega \approx 20.944\,\frac{rad}{s}\), then the linear acceleration of the particle is:

\(a = \left(20.944\,\frac{rad}{s} \right)^{2}\cdot (0.05\,m)\)

\(a = 21.933\,\frac{m}{s^{2}}\)

The linear acceleration of the particle is 21.933 meters per square second.

Answer:

Avaliar o indivíduo como um todo.

Explanation:

O graduado na capoeira, é uma pessoa que recebe mais respeito pelo grupo. Sendo portanto o objetivo de cada exame interno, ou pelo menos deveria ser em sua vasta maioria avaliar o indivíduo como um todo.

Answer:

The first major distinction is between the pelagic and benthic zones. The pelagic zone refers to the water column, where swimming and floating organisms live. The benthic zone refers to the bottom, and organisms living on and in the bottom are known as the benthos.

Explanation:

Answer:

answer is an ASTEROID

Explanation:

Iridium is a material that forms at very high temperatures, which is why its presence shows that in the impact zone the temperature rose a lot, so we can imagine that the impact was by a body traveling at high speed, which is consistent with a body that comes from space.

An asteroid is a celestial body of some size that when entering the atmosphere heats up and collides with the Earth, leaving a crater that in general is much larger than the diameter of the object.

A meteorite is a small fraction of an asteroid that has been separated by the pressure of the sun, the attraction of the Earth, Moon or another massive body or a combination of these effects, in general, meteorites are small and when they enter the atmosphere They are consumed by heat and very few reach the surface of the Earth, those that do reach are very small.

Therefore due to the size of the crater and the existence of many dead animals around the body must have been very heavy, so the correct answer is an ASTEROID

Answer:

B) An asteroid impact

Explanation:

Answer:

False,  the given equation is not balanced.

Explanation:

The given equation is:

Na(g) + 2HCl(g) → H₂(g) + 2NaCl(s)

And it is not balanced, the number of atoms of Na is not the same on both sides of the equation.

The balanced equation is:

2Na(g) + 2HCl(g) → H₂(g) + 2NaCl(s)          

Now, the given equation is balanced, we have the same number of atoms on both sides of the equation.

Therefore, the answer is false, the given equation is not balanced.

I hope it helps you!

Answer:

Joules

Explanation:

The unit for Energy is Joules, which is equal to kg m²/s².

The gravitational potential energy is calculated as:

Where m is mass (kg), g is gravity (m/s²) and h is the height (m). So, the unit of the potential energy is:

Therefore, the answer is joules.

Answer:

No Lo se :v esque estoy enferma del

The electrical force between 2 objects is 400 N. According to Coulomb's law, if both charges are doubled, the electrical force will be 1600 N.

The electrical force between 2 charged objects is directly proportional to their charges and inversely proportional to the square of the distance between them.

The electrical force between 2 objects is 400 N. Due to the direct proportionality, if the charge of both objects is doubled (multiplied by 2), the total force will be multiplied by 4.

F = 2 × 2 × 400 N = 1600 N

The electrical force between 2 objects is 400 N. According to Coulomb's law, if both charges are doubled, the electrical force will be 1600 N.

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Answer:

The biggest difference is that gravity is an attractive force while electromagnetism is both an attractive and repelling force. Gravity happens between two objects depending on their masses, while electromagnetism is dependent on the objects' electric charges and the distance between them.

Explanation:

Answer:

Speed

Explanation:

The answer is speed. It doesn’t affect potential energy because it’s associated with position. But since kinetic energy is associated with motion speed affects it.

false. According to NEC 378.21, conductors larger than the maximum size permitted by the wireway shall not be installed in the wireway.

This is because conductors that are too large can cause overheating and damage to the wireway, as well as potentially create a fire hazard.According to NEC 378.21, conductors larger than the maximum size permitted by the wireway shall not be installed in the wireway It is important to follow the manufacturer's instructions and guidelines for wireway installation and ensure that the conductors being installed are within the maximum size limits specified. Additionally, it is important to consider the ampacity and temperature ratings of the conductors to ensure they are appropriate for the intended application. Conductors that are too small may also create a hazard by overheating and causing a fire. Therefore, it is essential to choose the appropriate conductor size and follow all applicable codes and standards to ensure safe and reliable electrical installations.

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