two negative point charges are a distance x apart and have potential energy u. if the distance between the point charges increases to 3x, what is their new potential energy?

The momentum of the box is 21.2 kg m/s.

Momentum is a concept in physics that describes the tendency of an object to keep moving in the same direction unless acted on by an external force. Momentum is a vector quantity, which means it has both a magnitude (or size) and a direction. It is defined as the product of an object's mass and its velocity. Momentum is related to inertia, which is an object's resistance to change in motion. Momentum can be transferred between objects when they collide or interact in some other way.

Momentum is the product of mass and velocity. In this case, the box has a mass of 2kg and its velocity can be calculated using the equation for a body sliding down an inclined plane:
V = √2gh, where V is the velocity, g is the acceleration due to gravity (9.81 m/s2), h is the height of the ramp (3m).

Using this equation, the velocity of the box at the bottom of the ramp is 10.6 m/s. Therefore, the momentum of the box is 21.2 kg m/s. Momentum can also be calculated using the equation p = mv, where p is momentum, m is mass and v is velocity. Using this equation, the momentum of the box is 21.2 kg m/s.

To know more about Momentum click-
https://brainly.com/question/1042017
#SPJ4

Explanation:

a) power = energy/time

     taking time in seconds: 16 x 60 min x 60 sec  =57600 s

   now:

60 W = E/57600 s

E = 3456000 J or 3456 KJ

b) time: 45 x 60 s = 2700 s

        P = E/t

     1500 W = E/2700

E = 4050000 J or 4050 KJ

c) efficiency = (output energy/input energy) x 100

2.3% = (X/3456000) x 100

X = (2.3/100) x 3456000

X = 79488 J

The angular speed of the wheel is 8.00 rad/s. The tangential speed of point P is 16.00 m/s. The total acceleration of point P is 8.00 m/s^2. The angular position of point P is 73.38 rad.

The pace at which an object's position changes as perceived from a particular point of view and as measured by a particular unit of time (for example, 60 km/h northbound) is defined as its velocity.

(a) The angular speed of the wheel at t = 2.00 s can be found using the equation for angular acceleration:

ω = ω0 + αt

where ω is the final angular speed, ω0 is the initial angular speed (which is zero, since the wheel starts at rest), α is the angular acceleration, and t is the time.

ω = 0 + (4.00 rad/s^2)(2.00 s) = 8.00 rad/s

(b) To find the tangential speed of point P, we can use the equation:

v = rω

where v is the tangential speed, r is the radius of the wheel (2.00 m), and ω is the angular speed (8.00 rad/s).

v = (2.00 m)(8.00 rad/s) = 16.00 m/s

(c) The total acceleration of point P can be found by summing the radial and tangential components of acceleration. The radial acceleration is given by:

ar = αr = (4.00 rad/s^2)(2.00 m) = 8.00 m/s^2

The tangential acceleration is given by:

at = αr = (4.00 rad/s^2)(2.00 m) = 8.00 m/s^2

The total acceleration is the vector sum of the radial and tangential accelerations:

atotal = √(ar^2 + at^2) = √(8.00 m/s^2 + 8.00 m/s^2) = √(64 m^2/s^4) = 8.00 m/s^2

(d) The angular position of point P can be found using the equation:

θ = θ0 + ω0t + 1/2αt^2

where θ is the final angular position, θ0 is the initial angular position (57.38 degrees), ω0 is the initial angular speed (0 rad/s), α is the angular acceleration (4.00 rad/s^2), and t is the time (2.00 s).

θ = 57.38 + (0)(2.00 s) + (1/2)(4.00 rad/s^2)(2.00 s)^2 = 57.38 + 16 rad = 73.38 rad

To know more about velocity visit:

brainly.com/question/18084516

#SPJ4

A 5mm thick glass window with dimensions of W=lm and H=2m has a heat capacity of 1.4 w/mK. If the glass's internal and external surface temperatures are different.

What do you mean by thermal?

Thermal refers to a condition brought on by or involving heat or temperature. In science, the term "thermal" refers to a particular type of energy called thermal energy. Getting hot molecules and electrons causes them to accelerate and collide with one another, generating thermal energy.

What does the physics term "thermal" mean?

The energy present inside a system that establishes its temperature is referred to as thermal energy. Thermal energy flows as heat. Thermodynamics is an entire school of physics that examines how heat is transmitted across various systems and how

To know more about Thermal visit:

https://brainly.com/question/14506133

#SPJ4

The force experienced by a person whose momentum changes by 3kgm/s in 2s is 1.5N.

The force is defined as rate of change in momentum thus,

Force= Change in momentum/ time

Force= 3/2

Force = 1.5N

The relationship between force and momentum is given by

F=dp/dt. The second law of motion gives the following equation given by Newton. This law states that the change in momentum of an object due to its mass is given by its acceleration, or force.

Force (F) is equal to change in momentum (ΔP) with respect to change in time (Δt). Also, the change in momentum (ΔP) is equal to the momentum (J). Impulse has the same units as impulse (kg*m/s or N*s).

For more information on force kindly visit to

https://brainly.com/question/28875770

#SPJ1

When a stone is propelled vertically off the ground its kinetic energy decreases and gravitational potential energy increases.

When an object is propelled upwards at first it have the highest kinetic energy. The total energy will be equal to kinetic energy and potential energy will be 0. When it reaches midway through the air, the kinetic energy gradually decreases and potential energy increases, because some of the kinetic energy is converted to gravitational potential energy.

When the object reaches the maximum height, the Kinetic energy will become 0, and object stops moving forward. Here all the kinetic energy i converted to gravitational potential energy. Potential energy will be maximum at this point. After this the object begins to fall attaining some kinetic energy.

So when an object is thrown vertically upwards, the kinetic energy decreases and gravitational energy increases. The total energy will remain constant throughout.

For further information regarding kinetic and potential energy, kindly refer

https://brainly.com/question/22393418

#SPJ4

The frequency of the force at which the object will vibrate with an amplitude of 0.440m is f ≈ 5.2 Hz.

What is frequency?

Frequency is a concept in physics that describes the number of times a repeating event occurs in a given period of time. It is a scalar quantity and is measured in units of hertz (Hz), where 1 Hz is equal to one event per second. The frequency of a wave is the number of oscillations or cycles that occur in a given period of time, and it is the reciprocal of the period (the time it takes for one cycle to occur).

To determine the frequency at which the force will make the object vibrate with an amplitude of 0.440m, we can use the equation for the natural frequency of a damped harmonic oscillator:

f = (1 / (2 * pi)) * sqrt ( k / m)

where f is the frequency of the vibration, k is the spring constant, m is the mass of the object and pi is the mathematical constant pi. Given that the spring constant is 6.30 N/m and the mass of the object is 0.150 kg, we can substitute these values into the equation to find the natural frequency of the system:

f = (1 / (2 * pi)) * sqrt ( 6.30 N/m / 0.150 kg)

f = (1 / (2 * pi)) * sqrt ( 42 N/m/kg)

since damping is negligible, the frequency of the vibration will be the same as the natural frequency of the system.

f = (1 / (2 * pi)) * sqrt ( 42 N/m/kg)

The frequency of the force at which the object will vibrate with an amplitude of 0.440m is f ≈ 5.2 Hz.

To learn more about frequency from the given link:

https://brainly.com/question/26146342

#SPJ4

Answer:i don't understand what to do will you try to make it more understandable

Explanation:

When an object in simple harmonic motion is at its maximum displacement, its acceleration is also at a maximum.

The speed is zero when the simple harmonic motion is at its maximum displacement, however, the acceleration is the rate of change of velocity. The velocity reverses the direction at that point therefore its rate of change is maximum at that moment. thus the acceleration is at its maximum at this point.

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.

Learn more about acceleration:

brainly.com/question/28743430

#SPJ4

The orbital plane of the earth around the Sun is known as the ecliptic or ecliptic plane a path along the ecliptic can see against a background of stars from earth as the Sun moves around the celestial sphere.

Ecliptic in astronomy is the large circle that represents the Sun's apparent movement through the constellations over the course of a year from another angle it is the representation of Earth's orbit around the Sun on the celestial sphere Along the ecliptic the constellations of the zodiac are organized.

The sun's journey is indicated by the ecliptic a fictitious line in the sky Along with the moon planets also follow the ecliptic It designates the plane of the solar system by projecting Earth's orbit onto the cosmic sphere.

To know more about ecliptic visit:

brainly.com/question/3473428

#SPJ4

The speed of the earth around the sun is 29.747 km/sec and in meter per second is 29474 m/sec, if the distance between the earth and the sun is 1.5 × 10¹¹ meters.

The gravitation force between the earth and the sun works as the centrifugal force between the earth and the sun, which is required for the circular motion of the earth.

Let the mass of the earth = M₁

Let the mass of the sun = M₂ = 1.99 × 10³ kg

Let the speed of the earth around the sun = v

Distance between the earth and the sun, R =  1.5 × 10¹¹ m

Universal gravitational constant, G = 6.67 × 10⁻¹¹ Nm²/kg²

Centrifugal force = gravitational force

M₁ v²/R = GM₁M₂/R²

v = √(GM₂/R)

v = √(6.67× 10⁻¹¹ × 1.99 × 10³)/(1.5 × 10¹¹))

v = 29474.04 m/sec

or v = 29.474 km/sec

To know more about speed, here

https://brainly.com/question/28224010

#SPJ4

The final volume of the steam is 0.8 m^3, which is an increase of four times the initial volume. This expansion is due to the heat added to the steam, causing the steam molecules to move faster and occupy a larger volume.

To determine the final state of the steam after it has been heated, we can use the ideal gas law, which states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in kelvin.

We can use this equation to solve for the final volume of the steam after it has been heated to 500 degrees celsius. We can assume the steam is an ideal gas.

First, convert the initial temperature of 50 kPa to kelvin:

T1 = 50 + 273.15 = 323.15 K

Next, convert the final temperature of 500 degrees celsius to kelvin:

T2 = 500 + 273.15 = 773.15 K

The ideal gas constant R = 8.314 J/mol.K

We know the mass of steam is 1.8 kg, and we can use the molar mass of water, which is 18 g/mol, to calculate the number of moles of steam n = 1.8 kg / 18 g/mol = 0.1 mol.

Now we can use the ideal gas law to solve for the final volume of the steam, using the information we have:

P1V1 = nRT1

V1 = nRT1/P1 = 0.1 mol * 8.314 J/mol.K * 323.15 K / 50 kPa = 0.200 m^3

P2V2 = nRT2

V2 = nRT2/P2 = 0.1 mol * 8.314 J/mol.K * 773.15 K / 50 kPa = 0.8 m^3

The final volume of the steam is 0.8 m^3, which is an increase of four times the initial volume. This expansion is due to the heat added to the steam, causing the steam molecules to move faster and occupy a larger volume.

Learn more about gas law in brainly.com/question/12669509

#SPJ1

The magnitude of the force on the calcium ion is 1.0 x 10^7 N/C * e = 1.6 x 10^-19 N.

Magnitude is a measure of the size or strength of a physical quantity, such as size, brightness, or intensity. Magnitude can be measured in terms of intensity, size, brightness, or a combination of those criteria. For example, the magnitude of an earthquake is usually determined by measuring the intensity of the seismic waves that are generated by the earthquake. Magnitude is also used to measure the brightness of stars, with the brightest stars being given the highest magnitude.

The magnitude of the force on a calcium ion with charge +e is equal to the field strength multiplied by the charge of the ion. Thus, the magnitude of the force on the calcium ion is 1.0 x 10^7 N/C * e = 1.6 x 10^-19 N.

To learn more about magnitude
https://brainly.com/question/24468862
#SPJ4

One of the first explanations for the high redshifts of quasars was that they were ejected from galaxies at extremely high speeds. Since no quasars with significant blueshifts have been discovered, this hypothesis was dismissed.

It explains why quasars with both blue shifted lines should be expected if they were ejected from neighboring galaxies. By calculating the quasar's redshift, one can determine how big the universe was in comparison to how big it is now. The quasars were identified to have significant radio emission but the appearance of stars.

At first, their visible light looked perplexing, but astronomers soon discovered that they had significantly greater redshifts than stars. Redshifts for the quasars in the currently available spectra range from 15% to over 96% of the speed of light.

Learn more about galaxies Visit : brainly.com/question/17117676

#SPJ4

Option (4) is correct, an ice cold drink in a warm bar is the sign of the transferred energy from the perspective of the system and the surroundings.

In order to accomplish work and to produce heat and light, energy must be transported to a body or into a physical system. Energy is indeed the quantitative attribute that does this. Energy can be modified in form but it cannot be created nor destroyed, according to the rule of conservation of energy.

The Joule is the standardized (SI) unit of measurement for energy (J). This measurement comes from the idea that energy is the capacity for work. Joules, a unit of measure for work that is obtained by multiplying force by distance

To know more about energy visit :

https://brainly.com/question/1932868

#SPJ4

The direction of impulse is the direction of net force and linear momentum is referred to as true statement.

This is referred to as a certain amount of force you apply for a certain amount of time to cause a change in momentum.

It is also known as the integral of a force, F, over the time interval, t, for which it acts and is a vector quantity and the direction is also equal to the direction of the net force and linear momentum which is therefore the reason why true was chosen as the correct choice.

Read more about Impulse here https://brainly.com/question/229647

#SPJ1

While the yellow car's kinetic energy decreases, the white car's kinetic energy increases. Unless an outside force acts upon a body, Newton's motion law states that it will be at rest or in uniform motion. KE= 1/2mv2 is the formula for kinetic energy.

The energy that an object possesses as a result or motion is referred to as kinetic energy. We can only accelerate an object by exerting force. Applying force requires effort on our part. Upon completion of the task, the object will indeed be moving at a stable, constant pace since energy has been transmitted to it.

Exactly what is kinetic energy? Kinetic energy is a type of power that a thing or particle has as result of the its movement. By being exposed to something like a net force, an object transfers energy through work, accelerating and gaining kinetic energy in the process.

To know more about kinetic energy visit:

https://brainly.com/question/26472013

#SPJ4

Answer:

A touch screen on a phone is an example of a device that uses a capacitor.

When you bring your finger close to the screen your finger acts as one of the plates.

A sensing circuit works out the position of your finger. The camera on a phone is an example of a device that uses a CCD.

Light hits a grid of devices that produce charge.

Each of the squares is a capacitor.

0.002 electrical force is acting on the balloon.

Given information:

mass of balloon = 10g

charge on balloon = 0.002 coulomb

electric field = 1 volt/meter

To find electrical force acting on balloon

Use formula.

  F = q * E

      = 0.002 coulomb * 1 volt/meter

      = 0.002

The repulsive or seductive commerce between any two charged bodies is called as electric force. analogous to any force, its impact and goods on the given body are described by Newton's laws of motion. The electric force is one of the various forces that act on objects.

Learn more about Newton's laws of motion visit:

brainly.com/question/29768600

#SPJ4

The distance moved by the truck along the ramp as it stops is 72.9 m.

The distance moved by the truck before coming to stop is determined from the acceleration and initial velocity of the truck.

The acceleration of the truck is calculated by applying Newton's second law of motion as follows.

F = ma

where;

a = F / m

a = ( -300,000 ) / ( 60,000)

a = -5 m/s²

Now, we will apply the third kinematic equation to calculated the distance moved by the truck before coming to a stop;

v² = u² + 2as

where;

When the truck comes to a stop, the final velocity, v will be zero.

0 = u² + 2as

0 = (27²) + (2)(-5)(s)

= (27²) - 10s

10s = 27²

s = ( 27² ) / 10

s = 72.9 m

Learn more about distance here:

https://brainly.com/question/29149735

#SPJ1

The force transmitted to mike's leg is 39200N. So option A is correct.

To calculate the force transmitted to Mike's leg bones, we can use the formula:

force = mass x acceleration

We can calculate the acceleration using the formula:

a = (fv - iv) / t

fv is the final velocity (0 m/s since his downward motion stops)

iv is the initial velocity (we can assume it to be 9.8 m/s, the acceleration due to gravity)

t is the time it takes for his downward motion to stop (0.02 seconds)

So,

a = (0 - 9.8) / 0.02 = - 490 m/s^2

The mass of Mike is not given in the question, so we can assume it to be 80 kg, as a typical human mass.

force = mass x acceleration = 80 x (-490) = - 39200 N

The negative sign indicates that the force is in the opposite direction of the acceleration, but since the question is asking for the force exerted on the bone, the negative sign can be ignored.

So the force transmitted to Mike's leg bones is 39200 N

So, the correct answer is option A. 39200N

To learn more problems on Transmission:

https://brainly.com/question/29106678

#SPJ4

The radius of curvature is observed to be equal to twice the focal length for spherical mirrors with small apertures. Hence R = 2f.

As the radius of curvature for a lens grow (R2 > R1), the curvature of the lens decreases, and the focal length of the lens expands (f2 > f1) We can say clearly that the main focus of a spherical mirror lies at the core between the center of curvature and the pole.

the radius of curvature becomes longer the circle gets larger. As the circle gets larger, its curve gets praised, as the curve gets admired on a clear material Focal length of a lens depends on the deform index of the glass from which it is built, and on the curvature of its two surfaces.

So we can conclude that the result of a radius of curvature on the focal length of a convex lens.

Learn more about curvature here: https://brainly.com/question/30106462

#SPJ1

Coal of these is an example of a non-renewable source.

The correct option is B.

A resource can be classified as regenerative or nonrenewable based on whether it can replace itself in the rates it is used up or whether it has a finite supply. Forestry, wind, and solar energy are examples of renewable resources, whereas gas and coal are examples of non-renewable resources.

Natural replenishment of non-renewable water resources either takes a very long period or does not occur at all. The 'fossil waters' are included in this. The hydrological cycle makes renewable water resources, which include fresh water like lakes and streams and groundwater aquifers, rechargeable until they are overused.

To know more about Non-renewable resource visit:

https://brainly.com/question/30178642

#SPJ4

The complete question is -

Which of these is an example of a non-renewable source?

a) Trees

b) Coal

c) Water

d) Wind

Most electrons in materials like iron, cobalt, and nickel spin in the same direction. Another extremely magnetic material must enter the magnetic field of an existing magnet in order to become magnetized.

The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. A force perpendicular to the charge's own velocity and the magnetic field acts on it when the charge is travelling through a magnetic field. The magnetic field of a permanent magnet pulls on ferromagnetic substances like iron and attracts or repels other magnets.

Paramagnets, diamagnetism, and antiferromagnetic are three more magnetic effects, albeit these forces are often so weak that they can only be observed with specialized laboratory equipment. Electric currents, like those utilised in electromagnets, and electric fields that change in time produce magnetic fields that surround magnetised things. Since a magnetic field's direction and strength can change depending on the location, it can be mathematically characterized by a function that assigns a vector to each point in space. This function is known as a vector field.

To know more about magnetic

https://brainly.com/question/8725370

#SPJ4

Answer:

The process of a wet cloth being cooled by evaporation when hung in a hot wind in the desert can be explained by the second law of thermodynamics, as the evaporation of water molecules from the cloth increases their entropy and absorbs heat energy from the surrounding air, which causes the temperature of the wet cloth to decrease, and increases the overall entropy of the system.

Explanation:

The process of a wet cloth being cooled by evaporation when hung in a hot wind in the desert can be explained by the second law of thermodynamics. The second law states that entropy, or disorder, in a closed system will always increase over time.

When the wet cloth is hung in the hot wind, water evaporates from the cloth, absorbing heat energy from the surrounding air in the process. This causes the temperature of the wet cloth to decrease. In the process of evaporation, the entropy of the water molecules in the cloth increases, as they gain kinetic energy and escape into the air as water vapor. The entropy of the air molecules surrounding the cloth also increases, as they absorb the heat energy released by the evaporating water and become more disordered.

This process of evaporation, in which the wet cloth loses heat energy and becomes cooler, is an example of a process that increases the overall entropy of the system. This is in accordance with the second law of thermodynamics, which states that entropy in a closed system will always increase over time.

The cooling provided by the evaporation is due to the energy required to change the phase of the water from liquid to gas, this process is known as heat of vaporization, which is endothermic, meaning it absorb heat energy from the surrounding and hence the wet cloth is cooled.

The ball will move tangentially to the circle in a straight path due to inertia. The ball may travel in a parabolic direction after the string snaps because of gravity's potential net downward pull.

A property of matter where it remains at rest or travels uniformly in one direction in the absence of an external force. When the bus stops unexpectedly, people slump forward. When a bus driver suddenly applies the brakes, the upper portion of the body continues to go forward due to the inertia of motion, but the bottom portion of the body stops together with the bus.

Inertia is what holds the universe together. Literally. The material would not have the electric forces necessary to form its current configuration without it. Moving particles generate heat and kinetic energy, which operate to counteract inertia.

To know more about inertia visit :

brainly.com/question/3268780

#SPJ4

1.3x10^-8 T  is the direction of the magnetic field.

What is magnetic field?

According to mathematics, the electric field is described as a vector field that may be connected to each point in space and represents the force per unit charge that is applied to a positive test charge that is at rest at that location. Either the electric charge or time-varying magnetic fields can produce an electric field.

What is electromagnetic wave?

A magnetic field and an electric field vibrate together to produce electromagnetic waves, often known as EM waves. In other terms, magnetic and electric fields that are oscillating make up electromagnetic waves (EM).

E/B = c

B = E/c = 3.9/(3x10^8) = 1.3x10^-8 T

Therefore, 1.3x10^-8 T  is the direction of the magnetic field.

Learn more about magnetic field from the given link.

https://brainly.com/question/19878202

#SPJ4

To determine the greatest force P that can be applied to the frame, we need to analyze the forces acting on point A. The force P is acting on the frame at an angle of 45 degrees, and we know that the largest force resultant that can act on point A has a magnitude of 5 kN.

We can use vector addition to find the magnitude of the force resultant at point A. We can resolve force P into its x and y components, Px and Py, using trigonometry.

Px = P * cos(45) = P * 1/√2 = P/√2

Py = P * sin(45) = P * 1/√2 = P/√2

The force resultant at point A is the vector sum of Px and Py.

|F_resultant| = √(Px^2 + Py^2) = √((P/√2)^2 + (P/√2)^2) = √(P^2/2 + P^2/2) = √(P^2) = P

Since the force resultant at point A cannot exceed 5 kN, the magnitude of P must also be less than or equal to 5 kN. Therefore, the greatest force P that can be applied to the frame is 5 kN.

Learn more about Force here: https://brainly.com/question/28875770

#SPJ4

The new mass must be inserted and hung at a distance of 30 cm, per the calculation.

The past tense of the verb hang, which means "to suspend or be suspended," is "to hold." When it implies "to kill someone by tying a rope attached from above and removing the supporting from beneath," the past tense of the verb to hang is "to hang someone."

From the diagram,

W₁(50-30) + W₃(x-50) = W₂(80-50)

were, W₁ = m₁g = 0.4×9.8 = 3.92 N ( Where m₁ = 0.4 kg and g = 9.8

W₂ = m₂g =0.6×9.8 = 5.88 N ( where m₂ = 0.6 kg)

 W₃ = m₃g = 0.3×9.8 = 2.94 N ( where m₃ = 0.3 kg)

Therefore,

3.92(30) + 2.94(50-x) = 5.88(30)

117.6 + 147-2.94x = 176.4

2.94x+264.6 = 176.4

-2.94x = 176.4-264.6

2.94x = 88.2

x = -88.2/-2.94

x = 30 cm

Thus the third mass must be hung 30 cm

To know more about hanged visit:

https://brainly.com/question/29667752

#SPJ4

The right answer is (B) does not reflect light. An instrument that reflects light is likely to be sharp and in good condition, while an instrument that does not reflect light may be dull or damaged.

Natural resources like wood, coal, natural gas, salt, and crude oil are used to make plastics through the polymers or polycondensation process. Natural, organic resources like cotton, coal, natural gas, salt, and, of course, crude oil are used to produce plastics.

Industrial agriculture as we know it now would not be viable without plastic. Shorter food chains would be preferable; consider farm shops and neighborhood farming. However, this would necessitate major changes in the locations and methods of food production given that cities currently house more than half of the world's population.

To know more about the plastic visit:

brainly.com/question/4917097

#SPJ4