an object slides at a constat speed on a frictonless surf.ace how much net force acts on teh object? how much

The mass of the skateboard by conservation of momentum will be 2.84 kg.

Momentum can be defined as the force behind a body's motion.

Momentum is measured by "mass velocity" since it depends on both the speed and the direction of the body's motion. Since velocity is a vector and mass is a scalar, momentum is a vector quantity.

skateboard mass is 2.84 kg.

m1 =  student mass  = 45.5 kg

m2= skateboard  Mass

u = student Velocity = 4.25 m/s

v = student and skateboard velocity = 4 m/s

As momentum is conserved we have

m1*u=m1*v+m2*v

m2=(m1u-m1v)/v

m2=(45.5*4.25-45.5*4)/4

m2=2.84 kg

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The oil is 1 meter thick if the density of oil is 900 kg/m³ and it is kept in a cube shape container of 1 m³ volume.

The density of a substance is defined as the mass contained by the unit volume of the substance. In other words, density is the ratio of the mass and volume of a substance.

Density(d) = Mass(m)/volume(V)

Its SI unit is kg/m³.

If the density of oil is 900 kg/m³. And the volume of cube shaped container is 1 m³. V = 1 × 1 × 1 m³

So the depth would be 1 m³.

--The given question is incomplete, the complete question is

"How thick is the oil? suppose that the density of oil is 900 kg/m³, and it is kept in cube shaped container of 1 m³ volume.

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The velocity of the truck after the collision is 5.6 kmph.

The rate at which an object's position changes when observed from a specific point of view and when measured against a specific unit of time is known as its velocity.

The velocity of the truck after the collision can be calculated using the conservation of momentum principle. The principle states that the total momentum of an isolated system remains constant if no external forces act on it.

Momentum is calculated as mass * velocity (p = m * v)

Before the collision, the momentum of the car is m1 * v1 = 400 kg * 72 kmph = 28800 kgkmph

and the momentum of the truck is m2 * v2 = 4000 kg * 9 kmph = 36000 kgkmph

After the collision, the momentum of the car is m1 * v'1 = 400 kg * 18 kmph = 7200 kg*kmph

Now we use the principle of conservation of momentum to find the velocity of the truck after collision.

momentum before collision = momentum after collision

m1 * v1 + m2 * v2 = m1 * v'1 + m2 * v'2

28800 + 36000 = 7200 + m2 * v'2

64800 = 7200 + m2 * v'2

v'2 = (64800 - 7200) / 4000 = 5.6 kmph

Therefore, the velocity of the truck after the collision is 5.6 kmph.

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The combination of two 10-N trajectories at perpendicularly is approximately 14 N.

A quantity or phenomena with independent qualities for both size and direction is called a vector. The word can also refer to a quantity's mathematical or geometrical representation. Movement, momentum, force, electric interference, and weight are a few elements of axes in nature. To "transport" something from point A to point B, a vector is required; the Latin root of the word vector implies "carrier". Astronomers studying the planetary rotation around the Sun in the 18th century were the first to apply it.

Resultant vector [tex]$\vec{\gamma}$[/tex] can be written as

[tex]$$\begin{aligned}\vec{r} & =10 \hat{i}+10 \hat{\jmath} \mathrm{N} \\|\vec{r}| & =\sqrt{(10 \mathrm{~N})^2+(10 \mathrm{~N})^2} \\|\vec{\gamma}| & =10 \sqrt{2} \mathrm{~N} \\|\vec{r}| & =14.14 \mathrm{~N} \\|\vec{r}| & =14 \mathrm{~N}\end{aligned}$$[/tex]

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The rocket will shoot from the moon at a velocity of 0.39 m/s, in accordance with the question.

The mass of matter that makes up every item or body is the simplest way to understand mass. Every that we can see has mass.

F=ma

First Law of Motion (remember this equation)

28500 = 13800 * a

(Kg is the measurement of mass, while N is a measure of force.)

calculate a

In empty space, the velocity would be at a = 2.06 m/s2, but the moon is pulling it down.

We deduct it from acceleration because downward motion is the direction in which the item is traveling.

2.06-1.67 = 0.39

Consequently, the rocket will ascend at 0.39 m/s.

A human would weigh w = 96 N on the fictitious planet. The hypothetical planet has a mass of M/100. The hypothetical planet has a radius of R/4. W = 600 N is the weight of an individual on earth.

a way to gauge the amount of material that is present in or makes up a physical body. The mass of an object is important to Newton's equations of motion in classical mechanics because it affects the force required to accelerate it and, subsequently, how much inertia it has.

Between mass and weight, there is Weight is a measure of force, whereas mass is a measure of inertia.t).

 F = GMm/R²         ( m - mass of the person)

mg = GMm/R²  

    f = w= 16GMm/100R²

      =16/100×(mg)

      =16/100×(600)

     w= 96N

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airflow lifts a 3.6 kg bird 50 m up. how much work was done by the flow is 2,025,000J.

What is the purpose of airflow?

Data pipelines or workflows are scheduled and coordinated using Apache Airflow. The management, sequencing, coordination, and scheduling of intricate data pipelines from several sources is referred to as orchestration of data pipelines.

Airflow: A Python or Not?

The platform for creating, planning, and managing batch-oriented workflows is called Apache Airflow. With the help of the Python framework of Airflow, you may create workflows that connect to almost any technology.

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Some interstate routes have a 120 km/h speed limit. In how many meters per second is this? ... two - thirds ( 65 meters per second is approximately what 120 km/h is.

What does physics mean by speed?

In physics, speed is a scalar, which means it has just magnitude. It outlines the amount of time needed to travel between two points. How does physics determine speed In order to calculate speed in mathematics, you must divide total distance between two points by the amount of time it takes to get there.

What's the secret to speed?

Speed Formula 1 s stands for speed in m.s.-1, d for distance in m, and t for duration in s.

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The magnitude of the electric field strength between the two parallel conducting plates is 75 V/cm.

What is magnitude?

The magnitude of a quantity refers to the size or amount of that quantity, regardless of its direction. For example, the magnitude of velocity is the speed at which an object is moving, regardless of the direction it is moving in. Similarly, the magnitude of electric field is the strength of the field, regardless of the direction of the field.

To calculate the electric field strength between the two parallel conducting plates, we can use the formula:

E = V / d

where E is the electric field strength, V is the potential difference, and d is the distance between the plates.

Given that the potential 6.0 cm from the zero volt plate is 450 V, we can use this information to calculate the electric field strength between the plates:

E = 450 V / 6.0 cm = 75 V/cm

So the magnitude of the electric field strength between the two parallel conducting plates is 75 V/cm.

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The 6 m ramp has greater mechanical advantage than 4 m ramp.

The velocity ratio of a ramp or inclined system is determined from the ratio of the distance travelled by the effort to the distance travelled by the load.

Mathematically, the formula for velocity ratio of the ramp is given as;

V.E = dE / dL

V.R = 1 / sinθ

where;

The mechanical advantage of the ramp is calculated by the following formula.

M.A ∝ V.R

where;

sinθ = dE / dL

The mechanical advantage of the

For a ramp of 6m,

M.A = 1 / sinθ = 1 / ( 1 m / 6 m) = 6

For a ramp of 4 m,

M.A = 1 / sinθ  = 1 / ( 1 m / 4 m ) = 4

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Answer in N-units. With their centers of mass 3.3 m apart vertically, a light, inextensible cable initially travels over a light, friction pulley with such a radius of 13 cm. .

The gravitational acceleration is 9.8 m/s 2. How quickly do the two masses accelerate when they pass one another?

At 1.2 m/s2, an elevator increases in speed.

Gravity accelerates at a rate of 9.8 m/s2.

What is the forward force that the elevator floor applies to a passenger weighing 86 kg

Answer in N-units.

when there is an upward acceleration in the elevator?

Take into account the usual force the elevator would exert on you: N = mg while the elevator is stationary or travelling at a constant speed. If the elevator is moving upward, N = mg + ma. If the elevator is accelerating downward, N = mg - ma.

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When a honeybee flies through the air it develops a charge of +20pC, the electrons lost during the process of acquiring this charge is 1.25×10⁸ electrons.

Use an atom's atomic number and mass number to determine how many subatomic particles are present in it: Atomic number = number of protons. Atomic number = number of electrons. Mass minus atomic number equals the quantity of neutrons.

The honeybee's charge

Q = 20 pC = 20 × 10⁻¹² C

The current equation for the number of electrons is

n = Q/e

Where;

e is charge on electron = 1.6 × 10⁻⁻¹⁹ C

n = (20 × 10⁻¹²)/(1.6 × 10⁻¹⁹)

n = 1.25×10⁸ electrons.

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The current flowing through the heating element is about 104.35A.

Ohm's Law states that the current (I) flowing through a circuit is equal to the voltage (V) divided by the resistance (R).

I = V / R

We know the resistance of the heating element is 11.5 ohms. We can use the power rating of the kettle, which is 1200W, to calculate the voltage. Power is equal to voltage multiplied by current, so we can use this equation to find the voltage:

P = V * I

V = P / I

We can substitute the known values into this equation:

V = 1200 / I

Now we can use Ohm's Law to find the current:

I = V / R

Substituting the values we know:

I = (1200 / I) / 11.5

Solving for I, we get:

I = 104.35A

The current flowing through the heating element is about 104.35A.

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After the collision the cart with the SMALLEST speed is the cart with the GREATEST initial speed.

The principle of conservation of linear momentum states that in an Isolated system, the total momentum of the system is conserved.

Mathematically, the formula for conservation of linear momentum is given as;

m₁u₁  +  m₂u₂  =  m₁v₁  +  m₂v₂

where;

m₁ is the mass of the red cart

The final speed of each cart is calculated as;

v₁ = [ m₁u₁  +  m₂u₂ - m₂v₂ ] / m₁

v₂ = [ m₁u₁  +  m₂u₂ - m₁v₁ ] / m₂

since m₁ = m₂, our new equation becomes;

v₁ = u₁  +  u₂ - v₂

v₂ = u₁  +  u₂ - v₁

Thus, the cart with the least initial speed, will have the greatest final speed and vice versa.

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When a mountain climber is preparing to draw up a 15 m length of hanging rope, the work required is W = 225 J if the rope weights 2 newtons per metre.

Find the force equation.

k =2 N/m.

15-x.

F(x) = kx

F(x) = 2(15-x)

interval of 0 to 15.

W = ∫₀¹⁵2(15-x) on the interval 0 to 15

W = 2(15x) - 2(x^2/2)

on the interval 0 to 15

W = 225 J

Work is the amount of energy delivered to an item by an external force when that force moves it a specific distance.

The quantity of energy delivered to an item through work is defined as work done on it.

You are conducting work on an item when you apply a force to it that causes its position to shift in the same direction as the force. The work done on an object is divided into two parts.

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The wall exerts a greater force on the ball when it hits and sticks to the wall. This is because in this case, the wall is exerting a static force on the ball, while in the other case, the wall is exerting a dynamic force on the ball as it rebounds.

what is force ?

Force is a physical quantity that can be described as an action or influence that causes a change in an object's motion, direction, shape, or energy. It can be measured in terms of energy per unit of time, or momentum per unit of time. Force can be applied to an object by another object, and can also be applied by a person.

Force can be exerted by an object when it is acted upon by another object, such as when a person pushes a door open. Force can also be exerted by a person, such as when a person kicks a ball. Force can be either attractive or repulsive, and can cause objects to move, stop, or accelerate. Forces can be caused by contact between two objects, or by the application of a field of force, such as gravity or electrostatic forces.

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Answer:

The moth can be detected by the bat when it is about 21 meters away.

Explanation:

This is because the sound waves travel at about 340 meters per second, so it takes about 70 milliseconds for the sound waves to travel from the bat to the moth and back again.

Answer:

a.) C.

b.)b.

c.)E.

d.)A.

It implies that as the capacitance value increases, so will the quantity of the energy. Therefore, the capacitors should be connected together in parallel in order to store more power in a capacitor bank.

Capacitors are used in the distribution of electric power to rectify power factor. These banks are required to offset inductive loading caused by components like electric motors & transmission lines, which causes the load to seem to be primarily resistive.

banks of distribution capacitors. Distribution capacitors are put in place at substations, on the poles, or adjacent to the load. Even though these capacitors units serve the local demand with reactive power, they might not be able to lower feeder & transformer losses.

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The successive resonant frequency is the an open-open pipe instrument.

The lowest frequency of a periodic waveform is known as the fundamental frequency, also known as just the fundamental. V = v/2l is the fundamental frequency (n = 1). Higher frequencies are multiples of the fundamental frequency and are referred to as harmonics or overtones. The fundamental is sometimes referred to as the first harmonic; n = 2 results in the second harmonic or first overtone, and so on.

The basic tone and its peculiar harmonics can be produced via a closed pipe. But the fundamental tone as well as the odd and even harmonics can be produced by an open pipe. There are more individual tones in a note produced by an open pipe.

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Eq/m is the particle's acceleration as a result of the electric field, as stated in the preceding sentence.

To hold energies in an electrical circuit, a capacitor is a device. The idea behind how a capacitor functions is that if a earthed conductor is moved close to a conductor, its capacitance increases noticeably. In light of this, a capacitor consists of two plates with equal and opposing charges that are spaced apart.

Force is also ma, and the force acting upon that charge is qE. Acceleration a may be calculated by setting qE = ma.

Consequently a = Eq/m

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The density of the matter is always remains same no matter how much of the substance you have.

The measure of how densely a material is compacted together is called density. As the mass per unit volume, it has that description. Symbol for density: D or Formula for Density: Where is indeed the density, m is the object's mass, and V is its volume, the equation is: = m/V.

A substance's distinguishing quality is its density. The relationship between a substance's mass and the volume of space it covers is known as its density (volume). The density of a substance is governed by the mass, size, and organization of its atoms.

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The average force exerted on the ball by the club is 6296.3 N.

Force is characterised as an external cause that, when applied, alters or has the potential to alter a body's state. The body comes to rest when it is in motion, and it goes into motion when it is at rest. The body's direction, shape, size, etc. may also change as a result of it.

An illustration would be to push or forcefully push a door. Force has both a magnitude and a direction because it is a vector quantity. Force is described as the "product of a body's mass and acceleration" in Newton's second law.

we know that

FΔt = impulse = change in momentum = mv

Average force exerted = mv/t

F(avg) = 0.05 × 102/(0.81×10⁻³)

          = 6296.3 N

Thus, The average force exerted on the ball by the club is 6296.3 N.

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Water flowing in a horizontal pipe speeds up it goes from a large-diameter section to a small-diameter section the speed of the water increases due to work is done because the water in the larger pipe has a higher pressure.

When the pipe enters a narrower area, the fluid moves more quickly; when it enters a wider area, it moves more slowly. The volumetric flow rate, also known as current, and fluid velocity both refer to the speed at which a fluid moves, but they describe different aspects of the fluid differently.

In order to keep their volume flow rate constant when they enter a small, constricted space, incompressible fluids must accelerate. This is the reason why a narrow hose nozzle makes water move more quickly.

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Because more work must be done to overcome the greater pressure of the water in the larger pipe when it moves from a section of a horizontal pipe with a large diameter to one with a smaller diameter, the speed of the water increases.

In the pipe, the fluid moves more quickly through the narrower sections and more slowly through the wider ones. Although they both relate to the rate at which a fluid moves, fluid velocity and the volumetric flow rate, also known as current, characterize the fluid in different ways.

When entering a small, limited area, incompressible fluids must accelerate in order to maintain a constant volume flow rate. This is the basis behind the thin hose nozzle's ability to speed up water flow.

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The complete question is " Water flowing in a horizontal pipe speeds up as it goes from a section with a large diameter to a section with a small diameter. Which of the following can explain why the speed of the water increases? "

The time will it take for the voltage across the capacitor to drop to 2.50 v is t=1386.3sec

The fundamental equation for capacitors is charge = capacitance x voltage. Q = C x V. It is the capacitance that holds one coulomb of charge per one volt (defined as the quantity of charge transferred by one amp in one sec) that is measured in farads.

a capacitor is an electrical energy storage device that consists of two conductors that are isolated from one another and placed near to one another. A straightforward illustration of one such storage device is a parallel-plate capacitor.

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Pressure is the rate change of time of momentum divided by area. The correct answer is c.

Pressure is a measure of how much force is applied per unit area. It is defined as the rate of change of momentum of a fluid per unit area. This means that if a fluid is pushed against a surface, the pressure at that point is equal to the force exerted on the surface divided by the area of the surface.

Newton's second law of motion states that the force acting on an object is equal to the mass of the object multiplied by its acceleration, which is not directly related to pressure. Pressure is a scalar quantity and has no direction, it is a measure of how much a force is pushing or pulling in all directions.

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on either side, 0 cm Find the size of the net electromagnetic field present at the center of the square using three positive and one negative charges.

a substantial or significant amount

A man of ordinary means would have been discouraged by the task's size and importance (/maentud/). planetary science. Magnitude also describes how bright a star appears to be from Earth.

A picture of magnitude

Magnitude is a term used in physics to describe an object's maximal size and direction. Scalar and vector quantities both use magnitude as a common factor.

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Nuclear power, natural gas, lignite, and oil are examples of nonrenewable energy sources. The difficulty for mankind is that once the resources are finite, they cannot be replenished.

Energy content of non-renewable materials is high. Compared to renewable energy sources like solar or wind, resources like coal and oil often provide us more energy. Coal mining, oil sales, and the building of pipelines for natural gas can all result in enormous riches.

Burning coal and oil can cause particulates to be released into the air, sea, and land. Many of these bits are discharged into the air, while some are captured and kept away. Fossil fuel burning also disrupts the "carbon budget" of the planet, which balances the amount of carbon in the atmosphere, ocean, and ground.

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The current in the heating element is 17.08 A, and 12-gauge wire is sufficient to supply this current.  The resistance of the dryer's heating element at its operating temperature is 14.08 Ω.At 11 cents per kWh, it costs 0.41 cents per hour to operate the dryer.

Current is the flow of electric charge, usually through a conductor such as a wire. It is measured in amperes (A). Current is a measure of the rate of flow of electric charge, and can be direct (DC) or alternating (AC). In AC, the current regularly switches direction, making it ideal for powering most electrical equipment.

The current in the heating element is 4.1 kW/240 V = 17.1 A. 12-gauge wire is large enough to supply this current, as it can handle up to 20 A.

(b) The resistance of the dryer's heating element at its operating temperature can be calculated using Ohm's Law. R = V/I = 240 V/17.1 A = 14.03 Ω.

(c) The cost per hour to operate the dryer is 11 cents/kWh x 4.1 kW = 45.1 cents.

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There are a lot of things that could be causing the microphone on your phone to malfunction.

One or more of these issues could be caused by blockages in the microphone, an outdated piece of software, an unreliable third-party app, or faulty hardware. You should begin by determining whether or not the problem is indeed being caused by your microphone.

To begin, you can test the microphone on your phone by recording your voice using any of the recorders on your device. If the phone is able to record the sound of high quality, the microphone probably isn't broken. If everything is working well, you have nothing to worry about and can proceed with the next troubleshooting steps to repair the problem on your own.

1. Restart Your Mobile Device

2. Verify That the Microphone Is Covered by the Phone Protection

3. Verify the Existence of Connected Devices

4. A Microphone That Is Spotless

5. Eliminate All Third-Party Applications

6. Perform Software Updates

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