An airplane propeller is rotating at 1930 rev/min1.Compute the propeller's angular velocity in rad/s.2.How long in seconds does it take for the propeller to turn through 39 ??A turntable rotates with a constant 2.25 rad/s2angular acceleration. After 2.00 s it has rotated through an angle of 30.0 rad.1.What was the angular velocity of the wheel at the beginning of the 2.00-s interval?

At point A the spinning wheel will experience least centripetal force.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Centripetal force is applied on object depends on the centre and object distance. So B will experience maximum force while A is least.

At point A the spinning wheel will experience least centripetal force.

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The magnitude of the force of air resistance, in newtons, on a 55-kg skydiver assuming the force of air resistance is constant can be found using the following formula:

Fr = ma fr = Force of air resistance m = ma a = acceleration

In this case, the acceleration is the acceleration due to gravity which is 9.8 m/s².

To determine the acceleration in this case, we can use the following formula:

Vf² = Vi² + 2aswhere:Vf = final velocity (maximum speed)Vi = initial velocity (0 m/s)s = displacement (height)

Therefore,51² = 0² + 2(9.8)s490 = 9.8s

Simplifying490/9.8 = s50 = sSo the displacement of the skydiver is 50 m.

Thus, the acceleration is calculated as follows:

a = Δv/ΔtwhereΔv = 51 m/s - 0 m/s = 51 m/sΔt = time taken to fall 50 m using the acceleration due to gravity which is 9.8 m/s²Δt = √(2s/a)Δt = √(2(50)/9.8)Δt = 3.18 s So, a = Δv/Δta = 51/3.18a = 16 m/s²

To determine the force of air resistance, we can use the formula Fr = ma Fr = (55)(16)Fr = 880 N

Therefore, the magnitude of the force of air resistance, in newtons, on the skydiver is 880 N.

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Answ

im so sorry i dont know the answer

Answer:

c gl

Explanation:

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The original source of the energy found in the coal that was used to produce the electricity for the light bulb was the sunlight. Coal was formed from the remains of dead plants and animals that lived millions of years ago. option c.

In ancient times, plants absorbed energy from the sun to form their tissues. Coal is a type of fossil fuel formed from the decayed remains of ancient plants that were buried deep beneath the earth's surface. The energy stored in the plants was converted into coal over time through a process called carbonization. When coal is burned in a coal-fired power plant to produce electricity, the energy stored in the coal is released as heat. This heat is used to create steam, which in turn drives a turbine to produce electricity. The energy that powers the light bulb, therefore, comes from the burning of coal in the power plant. However, the original source of the energy found in the coal was the sunlight that the plants absorbed during their lifetime. Coal-fired power plants are a major source of electricity around the world. They are relatively inexpensive to build and maintain, and coal is abundant in many parts of the world. However, burning coal also releases large amounts of carbon dioxide and other greenhouse gases into the atmosphere, contributing to climate change and other environmental problems.

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In an elastic collision, both momentum and kinetic energy are conserved. Let's denote the momentum of the first object before the collision as p1, the momentum of the second object before the collision as p2, the momentum of the first object after the collision as p1', and the momentum of the second object after the collision as p2'.

Given:

p1 = 50.0 k gm/s (momentum of the first object before the collision)

p1' = -40.0 k gm/s (momentum of the first object after the collision)

We need to find p2 (momentum of the second object after the collision).

Since momentum is conserved, we can write the equation:

p1 + p2 = p1' + p2'

Substituting the given values:

50.0 k gm/s + p2 = -40.0  k gm/s + p2'

To find p2', we need to determine p2 by rearranging the equation:

p2' = 50.0 k gm/s + p2 - (-40.0 k gm/s)

Simplifying the equation:

p2' = 50.0 k gm/s + p2 + 40.0 k gm/s

p2' = p2 + 90.0 k gm/s

Therefore, the momentum of the second object after the collision is p2 + 90.0 k gm/s.

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Answer:

a. i His weight and the normal force on him due to the ground

ii The weight and the normal force are balance

b. There are four forces acting on him while he is walking. These are the backward push due to his leg on the ground and the frictional force between his feet in the horizontal direction and, his weight and normal force on his feet in the vertical direction.

Explanation:

a. i Describe the forces that are acting on a person who is standing still on a sidewalk

His weight and the normal force on him due to the ground act on him while the person is standing on the sidewalk

ii. identify whether the forces are balanced or unbalanced.

The weight and the normal force are balance because, the person does not move in the vertical or horizontal direction.

b. Describe how the forces would change if the person started walking.

When the person starts walking, the backward push due to his leg on the ground and the frictional force between his feet and the ground now acts on him in the horizontal direction. The frictional force acts in the forward direction and tends to move him forward. His weight and normal force on his feet still act vertically and are both balanced since he does not move in the vertical direction.

So, there are four forces acting on him while he is walking. These are the backward push due to his leg on the ground and the frictional force between his feet in the horizontal direction and, his weight and normal force on his feet in the vertical direction.

So 245×10³ N/m the force needed to open the hatch from the inside.

We are aware that pressure rises as we go deeper into any liquid, even water.

Following are the changes in fluid pressure with depth.

P = ρgh

Here, represents the fluid's density.

The height of the liquid column is equal to h and the acceleration caused by gravity is g.

Keep in mind that gh represents the pressure increase caused by the liquid column, while the actual pressure would be

P =  ρgh  + P₀

P₀ is the atmospheric pressure

Hatch present at height 25m

Diameter of the hatch = 0.45m , Radius = 0.225m

Pressure inside the submarine = 1 atm

Pressure on hatch from outside = 1 atm + ρgh

Pressure from inside the submarine on the hatch = 1 atm

Net pressure on the hatch = ρgh

ρgh = 10³ × 9.8 × 25 = 245×10³ N/m.

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Explanation:What is centripetal acceleration?

Can an object accelerate if it's moving with constant speed? Yup! Many people find this counter-intuitive at first because they forget that changes in the direction of motion of an object—even if the object is maintaining a constant speed—still count as acceleration.

Acceleration is a change in velocity, either in its magnitude—i.e., speed—or in its direction, or both. In uniform circular motion, the direction of the velocity changes constantly, so there is always an associated acceleration, even though the speed might be constant. You experience this acceleration yourself when you turn a corner in your car—if you hold the wheel steady during a turn and move at constant speed, you are in uniform circular motion. What you notice is a sideways acceleration because you and the car are changing direction. The sharper the curve and the greater your speed, the more noticeable this acceleration will become. In this section we'll examine the direction and magnitude of that acceleration.

The figure below shows an object moving in a circular path at constant speed. The direction of the instantaneous velocity is shown at two points along the path. Acceleration is in the direction of the change in velocity, which points directly toward the center of rotation—the center of the circular path. This direction is shown with the vector diagram in the figure. We call the acceleration of an object moving in uniform circular motion—resulting from a net external force—the centripetal acceleration

a

c

a

c

​

a, start subscript, c, end subscript; centripetal means “toward the center” or “center seeking”.

The work done on the crate is 6500 J and the final speed of the crate is 16.12 m/s.

We can use the work-energy theorem and the equations of motion.

Work done (W) is given by the equation:

W = F * d * cosθ

Where:

Substituting the values, we have:

W = 325 N * 20.0 m * cos(0°)

W = 6500 J

Therefore, the work done on the crate is 6500 Joules.

Final speed of the crate:

We can use the equation of motion to determine the final speed (v) of the crate:

v² = u² + 2aΔx

Where

a = F/m = 325 N / 50.0 kg

a ≈ 6.5 m/s²

Substituting the values, we have:

v² = 0 + 2 * 6.5 m/s² * 20.0 m

v² = 260 m²/s²

v ≈ 16.1 m/s

Therefore, the work done on the crate is 6500 J and the final speed of the crate is 16.12 m/s.

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Answer:

r = 1.999m

Explanation:

E = kq/r²

10 = 9*10^9*q/1²

q = 10/9*10^9

q = 1.11*10^-9

then at what distance

r² = kq/E

r² = 9*10^9*1.11*10^-9/2.5

r² = 9.99/2.5

r² = 3.996

r = √3.996

r = 1.999m

This country has become an attractive manufacturing location because of availability of workers skilled in semiconductor production is True.

This involves the process of conversion of raw materials into finished products.

It involves the factors of production which is why the country became an attractive manufacturing location for semiconductors because of the number of manufacturing plants in the country and availability of workers skilled in semiconductor production.

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Answer:

20 metros en 4 segundos.

Explicación:

Un pasajero quiere subirse a un microbús que está parado y corre tras él con una velocidad uniforme de 5 m / s por lo que tomará el autobús 4 segundos si el autobús está a 20 metros de distancia porque la persona se mueve con una velocidad uniforme de 5 metros en uno. segundo para que la persona pueda alcanzar 20 metros de distancia en 4 segundos, por lo que podemos concluir que la persona llega al autobús en 4 segundos.

The best method for installing Windows 10 on this system is to Install Windows the same way you would a system that uses a standard hard disk drive.

A hard disk drive or fixed disk is described as an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material.

A solid-state drive(SSD) is described as a solid-state storage device that uses integrated circuit assemblies to store data persistently, typically using flash memory, and functioning as secondary storage in the hierarchy of computer storage.

You do not need to add a standard hard disk to the system and install Windows on the disk instead of the SSD device in order for you to install Windows 10 on a new computer system that uses a SATA SSD device to store data .

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Answer:

This question is incomplete

Explanation:

This question is incomplete. However, from the completed question, determine the distance (in meters) the horse covered in the first ten seconds of it's gallop and apply the formula below.

Average velocity = distance (in meters) ÷ time (in seconds as provided in this question)

The unit for velocity (to be used here) is m/s or ms⁻¹

The magnitude of the impulse acting on the ball is 10.00 kg m/s, the average force exerted on the wall is 45.45 N (approximately) and the final velocity of the skateboarder is  -2.07 m/s.

1) To find the magnitude of the impulse acting on the ball, first determine the change in momentum. The initial momentum is 6.00 kg m/s, and after bouncing, the momentum is -4.00 kg m/s (opposite direction).

Step 1: Calculate the change in momentum
Change in momentum = Final momentum - Initial momentum
Change in momentum = -4.00 kg m/s - 6.00 kg m/s = -10.00 kg m/s

Step 2: Determine the magnitude of the impulse
The magnitude of the impulse is the absolute value of the change in momentum.
Magnitude of impulse = |-10.00 kg m/s| = 10.00 kg m/s

2) To find the average force exerted on the wall, use the formula for impulse:
Impulse = Force × Time

Step 1: Calculate the impulse
Impulse = 10.00 kg m/s (from the previous calculation)

Step 2: Given the time interval
Time = 0.22 s

Step 3: Calculate the average force
Force = Impulse / Time
Force = 10.00 kg m/s / 0.22 s = 45.45 N (approximately)

3) To calculate the final velocity of the skateboarder, use the impulse formula:
Impulse = Mass × Change in velocity

Step 1: Given the mass and initial velocity
Mass = 42.0 kg
Initial velocity = 1.50 m/s

Step 2: Calculate the change in velocity
Change in velocity = Impulse / Mass
Change in velocity = 150.0 kg m/s / 42.0 kg = 3.57 m/s (approximately)

Step 3: Calculate the final velocity
Final velocity = Initial velocity - Change in velocity (negative because it bounces back)
Final velocity = 1.50 m/s - 3.57 m/s = -2.07 m/s

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Answer:

a = 0.5m.s²

Explanation:

Fnet = m×a

50 = 100×a

a = 0.5

Earth is a good example of inertial frame of reference.

To find the answer, we have to know about the Inertial frame of reference.

Thus, we can conclude that, Earth is a good example of inertial frame of reference.

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According to the information we can infer that the complete sentence would be: The locking lever should be placed in the "unlocked" position.

To complete the sentence we have to read the available information and look for the term that completes it based in the context. In this case we can infer that the term is "unlocked" because to unlock the fifth wheel, the locking lever needs to be positioned in the "unlocked" position.

The fifth wheel is a coupling mechanism used in heavy-duty trucks and trailers to connect the trailer to the tractor unit. It allows for articulation and provides a pivot point for turning movements.

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Answer:

Operate, monitor, and adjust audio, video, lighting, and broadcast equipment to ensure consistent quality. Set up and take down equipment for events and live performances.

Answer:

it is the 3rd answer choice

The correct assumption of the given situation is required.

The correct option is

Either the driver of the westbound car overestimated his velocity or the driver of the eastbound car underestimated his velocity,

\(m_a\) = Mass of west moving car = 1200 kg

\(m_b\) = Mass of east moving car = 1000 kg

\(v_{ia}\) = Velocity of west moving car = -7 m/s

\(v_{ib}\) = Velocity of east moving car = 10 m/s

v = Combined velocity of the cars = 3 m/s

From the conservation of momentum we get

\(m_av_{ia}+m_bv_{ib}=(m_a+m_b)v\\\Rightarrow 1200\times -7+1000\times10=(1000+1200)\times 3\\\Rightarrow 1600\neq 6600\)

So, either westward ( \(1000\times10\) ) moving car needs to have more velocity or eastward (\(1200\times -7\)) moving car needs to have less velocity.

Since, mass is constant only the velocity can be different.

The correct option is

Either the driver of the westbound car overestimated his velocity or the driver of the eastbound car underestimated his velocity.

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A group of notes based on a particular note and comprising a scale, regarded as forming the tonal basis of a piece or passage of music is known as a key.

In music theory, a key refers to a set of pitches or notes that revolve around a central or tonic note. The key establishes the tonal center and provides a framework for harmonies and melodies in a musical composition. It consists of a scale, typically spanning an octave, and is named after its tonic note, such as C major, A minor, or E-flat major. The key influences the overall mood, tension, and harmonic relationships within a piece of music. By utilizing different keys, composers can create diverse emotional and tonal qualities in their compositions, adding depth and variation to the musical experience.

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Answer:

ironing clothes, process of sweating, line drying clothes, melting a glass of ice, drying of wet towels

Explanation:

Answer:

Water is vaporized when it is boiled on the stove to cook some pasta, and much of it forms into a thick steam. Water evaporates – Water evaporates from a puddle or a pool during a hot summer’s day.

Explanation:

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During an earthquake, the ground experiences significant stress and movement, which can lead to elastic strain on structures, such as a straight fence.

Elastic strain is the temporary deformation of materials under stress, where the material returns to its original shape once the stress is removed.
In this case, if the straight fence undergoes elastic strain during the earthquake, the fence will respond according to the direction of stress. Therefore, the correct answer is:

A) The fence will bend in the direction of stress.
As the stress is applied to the fence, it will bend or deform in the same direction as the force. However, since the strain is elastic, the fence will return to its original straight shape once the earthquake has subsided and the stress is removed.
It is essential to note that the fence will not bend away from the stress, remains straight, or break due to the elastic nature of the strain. Elastic strain allows the fence to absorb the energy from the earthquake and then release it, preventing permanent deformation or damage.

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Answer:

current must flow and chemical energy must take place