Draw conclusions: Objects falling through air are slowed by the force of air resistance. Which objects were slowed the most by air resistance

Answer:

I would say the answer is A... but I'm not so sure ....

The seatback must be adjusted far enough for your wrist to rest on the top of the steering wheel when your arm is comfortably extended.

The majority of modern automobiles, compact trucks, and SUVs have a rack and pinion steering. This transforms the steering wheel's rotational action into the linear motion which rotates the wheels and directs your course. A steering pinion, a circular gear, is used in the system to lock teeth on a rod (the rack).

The basic device at work in steering, doorknobs, turbines, and bicycle wheels is a wheel and axle. An inclined plane wound around a cylinder is known as a screw.

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Most circuits contain more than one resistor, which restricts the passage of charge inside the circuit. Resistance is a unit of measurement for this charge flow restriction.

When a current, or flow of charge, must pass through a sequence of devices, resistors are used. For instance, if a person holding a screwdriver allows current to flow through them and into the Earth, then

Resistors are connected in series to a voltage source. Given that the current must flow sequentially through each resistor, it makes sense that the total resistance is equal to the sum of the individual resistances.

This fact would be helpful to someone trying to prevent an electrical shock since they could wear high-resistance rubber-soled shoes to lower the current.

Therefore, Most circuits contain more than one resistor, which restricts the passage of charge inside the circuit. Resistance is a unit of measurement for this charge flow restriction.

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Answer:

1254 J

Explanation:

Applying,

Q = mcpΔT................... Equation 1

Where Q = heat, m = mass of water, cp = specific heat capacity of water, ΔT = Change in temperature.

From the question,

Given: m = 15 g, cp = 4.18 J/(g.°C), ΔT = 20°C

Substitute these values into equation 1

Q = 15×4.18×20

Q = 1254 J

Hence the amount of energy required is 1254 J

Answer:

Potential Energy at the greatest point = 37.5 J

Explanation:

Given :

Mass is 750 g

In term of kg :

Mass is 0.75 kg .

Velocity ( v ) = 10 m / sec

We have formula for kinetic energy :

K.E. = 1 / 2 m v²

Putting values now :

K.E. = 1 / 2 × 0.75 × 10 × 10

K.E. = 1 / 2 × 75 J

K.E. = 37.5 J

Since K.E . = P.E.

Thus potential energy of stone is 37.5 J .

A systematic error is one that constantly occurs in one direction, for as when a scale consistently overestimates everyone's weight by two pounds.

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At the instant when a mass is at its equilibrium position when undergoing simple harmonic motion, its instantaneous velocity is its maximum.

Therefore the answer is C. At equilibrium, its instantaneous velocity is at maximum

The simple harmonic motion is periodic motion that oscillates around an equilibrium position. At the equilibrium position, the net force on the mass is zero. Therefore, the mass is not accelerating, so its instantaneous acceleration is zero.

The motion is periodic, meaning it repeats itself at regular intervals of time. In the case of a mass on the end of a spring, the spring exerts a force on the mass that acts to bring it back to its equilibrium position. When the mass is at the equilibrium position, the spring force is zero, and the mass is not accelerating. Therefore, the acceleration is maximum at it ends and decreases to zero at equilibrium position.

The instantaneous velocity is zero at the end as it changes direction of motion, though the acceleration is decreasing from end position to equilibrium, velocity is increasing. The instant after equilibrium position, the acceleration is in opposite direction decreasing the velocity till it is zero at the end position.

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When two objects are separated by a distance then gravitational attraction between them is 1.36 × 10^-9 N.

Given,

m = 1.5 × 10^5 kg

M = 8.5 × 10^2 kg

r = 2500 m

F=GmM/r^2

Here G = 6.67 × 10^-11 N.m^2/kg^2 is the value of the gravitational constant

F = 1.36 × 10^-9 N

Every body in the universe attracts every other body with a gravitational force that decreases with distance as 1/r2. But actually he knew more about the gravitational force: from the fact that bodies of different masses near the earth’s surface accelerate downwards at the same rate, using F = ma (Second Law).

If two bodies of different masses have the same acceleration they must be feeling forces in the same ratio as their masses (so a body twice as massive feels twice the gravitational force), that is, the gravitational force of attraction a body feels must be proportional to its mass.

Newton’s first clue that gravitation between bodies fell as the inverse-square of the distance may have come from comparing a falling apple to the falling moon, but important support for his idea was provided by a detailed description of planetary orbits constructed half a century earlier by Johannes Kepler.

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Answer:

5 grams

Explanation:

15 hours = one half-life

a half-life is the time taken for the radioactive substance to reduce to half of its original value

thus in 15 hours, there will be 5 grams remaining

Answer:

I think

C- It's a greenhouse gas

The new electrostatic force between the charges, given that q₁ is reduced to 1/2q₁ and q₂ is tripped is 3/2Fₑ (Option C)

First, we shall determine the initial electrostatic force between the charges. Details below:

F = Kq₁q₂ / r²

Fₑ = Kq₁q₂ / r²

Finall, we shall determine the new electrostatic force. The is illustrated below:

F = Kq₁q₂ / r²

F = (K × 1/2q₁ × 3q₂) / r²

F = 3/2Kq₁q₂ / r²

But,

Fₑ = Kq₁q₂ / r²

Thus

F = 3/2Fₑ

Thus, we can conclude that the new electrostatic force is 3/2Fₑ (Option C)

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Answer:

the two factors are the mass of the objects and the coefficient of friction between them

Explanation:

internet :)

If the index of refraction of a refractive medium slows the light to 1.88 x 10^8 m/s. The index of the second medium is: 1.60.

Using this formula to find the index of the second medium

n = c/v

Where:

n = refractive index of the medium
c = velocity of light in vacuum

v = velocity of light in the medium.2

Let plug in the formula

n = (3 x 10^8 m/s)/ 1.88 x 10^8 m/s

n = 300,000,000/188,000,000

n = 1.595

n = 1.60 (Approximately)

Therefore we can conclude that the  refractive index of the medium is 1.60.

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Answer:

The more time goes on the higher in meters. So most likely more time = closer to terminal velocity. -hope this helps.

The statement that best defines climate is as follows: the average conditions of the atmosphere for a large region for the past 30 years or more (option D).

Climate is the long-term manifestations of weather and other atmospheric conditions in a given area or country.

Climate is now usually represented by the statistical summary of its weather conditions during a period long enough to ensure that representative values are obtained (generally 30 years).

A description of a climate includes information on, e.g. the average temperature in different seasons, rainfall, and sunshine.

Therefore, option D correctly describes climate.

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Answer:

I dont know what you mena by road and the people

The correct answer is D) Before the mechanic left, the molecules were moving in place. When she returned, they were moving around each other. The change in phase from solid to liquid is due to a change in the motion of molecules.

Molecules are formed when two or more atoms come together and form a chemical bond. Molecules exist in all forms of matter and are the building blocks of all living organisms. Molecules can range in size from the very small, such as hydrogen, to the very large, such as proteins. Generally, molecules are composed of two or more atoms of the same element or different elements that are held together by chemical bonds. Molecules can also be composed of multiple subatomic particles, such as protons and neutrons, which form the nucleus of an atom. Molecules may also contain electrons, which are held in orbit around the nucleus by electrostatic forces. Molecules can have different shapes depending on the arrangement of their constituent atoms. Molecules are essential to all forms of life, as they are responsible for many of the physical and chemical processes that take place in living organisms.

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Nonsense mutations are those point mutations in the DNA where stop codons will appear before the time they should appear.

At the time of transcribing from DNA to RNA, the template needs to have both start and stop codons for the transcription to occur correctly, but sometimes mutations can occur that do not allow the protein to be produced correctly. This mutation can be permanent which causes damage to the formation of proteins.Sometimes mutations can be beneficial, allowing evolution and helping organisms to be better formed for a new environment.

It is the type of mutation in which a termination codon occurs before the time it should be, instead of giving a codon with a certain amino acid. Which gives a much shorter protein than it should be, giving a non-functional protein.

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A weight known as a counterweight is one that stabilizes and balances a mechanical system by exerting an opposing force.

A counterweight's function is to speed up and improve the efficiency of lifting the load, which conserves energy and reduces wear and tear on the lifting apparatus. A weight known as a counterweight is one that stabilizes and balances a mechanical system by exerting an opposing force.

To lift loads up to 120 tons, tower cranes are utilized at large building sites. In a tower crane, a fixed and a moveable counterweight are held by two arms that extend from the center of the structure. For the purpose of balancing the load, the operator moves the mobile counterweight.

For the purpose of providing offset forces in the flight controls, counter weights are used. With less pressure needed to move the controls, this gives them better "feel" and "feedback" forces.

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A counterweight should  be moveable so as to make lifting the load in a faster and more efficient manner.

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The value of the resistor of five parallel-connected resistors is R/5 ohm. Hence, 5 resistors of resistance R/25 ohm connected in series to give an equivalent resistance to five resistors connected in parallel

Modern resistors are often constructed from a carbon, metals, or metal-oxide layer. In these resistors, an insulating material is covered in a helix around a thin layer of conductive (but still resistant) material.

A resistor is a component of an electronic device that regulates or limits the amount of electrical current that can flow through a circuit. Resistors can also supply a certain amount of power to an electronic appliance like a transistor. A light bulb illuminates when power is applied to the resistor tungsten. The end results of the energy are heat and light.

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Alright, I'll try my best and see what I can do to help you.

Answer:

Velocity of ball = 2.90 meter per second (Approx.)

Explanation:

Given:

Distance travel by ball = 1.3 meters

Time taken by ball = 0.45 seconds

Find:

Velocity of ball

Computation:

Velocity = Total displacement / Total time taken

Velocity of ball = Distance travel by ball /Time taken by ball

Velocity of ball = 1.3 / 0.45

Velocity of ball = 2.889

Velocity of ball = 2.90 meter per second (Approx.)

Answer:

The acceleration becomes zero as it stops. It no longer moves

The required equation for torque used for lever arm r and F for force is given as τ = |r| |F| sinθ.

A simple way to calculate the magnitude of the torque is to first determine the lever arm and then multiply by the times of applied force.

The lever arm is described as the perpendicular distance from axis of rotation to the line of action of force.

The equation used to calculate torque is , τ = r × F = |r| |F| sinθ

where,

r is the magnitude of lever arm

F is the magnitude of force vector

θ is the angle between lever arm and force vectors

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Accenture can assist its clients in being more sustainable thanks to the myNav. By making it easier to create cloud solutions that lower carbon emissions by rearranging manufacturing facilities such that carbon emissions can be calculated with ease.

by establishing new corporate efforts to lower transportation expenses and by establishing new rules for the disposal of out-of-date technology.

Accenture can assist its clients in becoming more sustainable by using mynav to locate, assess, architect, and simulate an end-to-end solution at scale.

reduces the expense of transportation

creates a design that is appropriate and aids the customer in becoming more sustainable.

establishes sustainable guidelines for disposing of outdated technology.

Green Cloud Advisor starts by establishing a baseline for the energy usage, compute needs, and sustainability objectives of current data centers. through promoting the development of cloud technologies that cut down on carbon emissions

by reconfiguring factories so that carbon emissions may be easily measured

by implementing creative business techniques to reduce the cost of transportation

by creating new regulations for removing outdated technologies.

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Answer:

The Answer is (B)

Explanation:

We can find the torque of lever arm by the formula Torque(T)=Force * perpendicular distance.

A torque is an action that causes objects to rotate. A torque is required to rotate an object, just as a force is required to move an object in a line. Torque is created by force, but it also depends on where the force is applied and the point about which the object rotates.

Force and lever arm are not always perpendicular. When the force and lever arm are not perpendicular, trigonometry is required to calculate the length of the lever arm. The force applied is perpendicular to the surface of the object rotating. When this force is at an angle θ with the plane of the object, the perpendicular force requires the use of the sine function.

When an object is in rotational equilibrium, the net torque applied to it is zero. For example, if an object such as a see-saw is not rotating, you know the torque on each side is balanced Rotational equilibrium is often used to determine unknown forces. Any object that is not moving is in rotational equilibrium and in translational equilibrium.

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The volume of air in the room. The volume of the room is given by the product of its length, width, and height=  18.015 g/mol.

Volume of air = 5.0 m × 9.0 m × 2.4 m = 108 m^3

Next, we need to find the number of moles of water vapor present in the air at 85% of the vapor pressure of water at 30°C.

The vapor pressure for water at 30°C is 31.8 torr. At 85% of this value, the vapor pressure of water in the air is:

Vapor pressure in air = 0.85 x 31.8 torr = 27.03 torr

We can use the Ideal Gas Law, PV = nRT, to find the number of moles of water vapor present in the air.

P = 27.03 torr

V = 108 m^3

R = 8.314 J/mol·K (The universal gas constant)

T = 303 K (Temperature in kelvins)

n = (PV) / (RT)

mass of water = n * M(H2O)

Where M(H2O) is the molar mass of water which is 18.015 g/mol. It is important to note that this calculation assumes that air behaves as an ideal gas and that the temperature and pressure remain constant throughout the room. In reality, the temperature and pressure may vary throughout the room and the process of removing water vapor from the air can also affect the temperature and pressure.

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W=mg=(3)(9.8)=29.4N is the balance measurement for an airborne body. Scales of this kind include spring balances and newtons meters. They are frequently used to gauge the amount of force applied to an object.

The spring balance operates according to Hooke's law. According to Hooke's law, a material's strain will increase in direct proportion to its applied stress up to its elastic limit.

A straightforward and affordable way of measuring mass is offered by spring balances. The mass is suspended from a spring, and the spring's bending caused by the mass's downward gravitational pull is gauged against a scale.

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Ranking each of the following from least to greatest in terms of the amount of momentum each possesses:

A 5 kg object moving at -25 m/s < A 100N object moving at 5 m/s < A 10kg object moving at 10 m/s < A 30 kg moving at 5 m/s

Momentum is the product of a particle's mass and velocity. The fact that momentum is a vector quantity means that it has both magnitude and direction. The force pushing a particle has an equal-and-opposite impact on the speed at which its momentum changes, according to Isaac Newton's second law of motion. Take a look at Newton's laws of motion.

Newton's second law states that if a particle experiences a constant force for a predetermined period of time, the impulse—which is equal to the force multiplied by the duration—will equal the change in momentum. The amount of time required for a consistent force to bring a particle to rest, in contrast, is measured by a particle's momentum.

We know that momentum, p = mv

Where,

p = momentum

m = mass

v = velocity

Substituting the value in formula we get,

1. A 10kg object moving at 10 m/s

p = 10 × 10

  = 100 kg⋅m/s

2. A 30 kg moving at 5 m/s

p = 30 × 5

  = 150 kg⋅m/s

3.  A 5 kg object moving at -25 m/s

p = 5 × -25

  = -125 kg⋅m/s

4. A 100N object moving at 5 m/s

p = (100 × 0.10197 kg) × 5

  = 10.197  × 5

  = 50.985 kg⋅m/s

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