if a car moving at 90 mi/h takes 300 ft to stop with uniform acceleration after its brakes are applied, how far will it take to stop under the same conditions if its initial velocity is 45 mi/h ?

Answer:

Purified water undergoes additional processes as compared to distilled or mineral water such as deionization and reverse osmosis. As purified water is free of toxins, such as bacteria, viruses, and synthetic chemicals and rich in minerals, it is the ideal form of water for daily consumption

Answer:

Light is nor a matter because

It has no mass

It occupies no volume

We can't touch it.

Explanation:

Matter is any material that has mass and occupies volume.

Here are 25 things that don't:

Truth, Peace, Justice, Honesty, Beauty, Envy, Jealousy, Gluttony, Pride, Arrogance, Modesty, Humility, Bravery, Victory, Democracy, Sincerity, Secrecy, Pain, Pleasure, Mercy, Liberty, Equality, Fraternity, Freedom, and Virtue have no mass, and they don't occupy any space.  So none of them contains any matter.

In public health, the first level of leadership is typically at the managerial or supervisory level. This level of leadership is responsible for overseeing a specific department, program, or team within a public health organization or agency.

Individuals at this level may hold titles such as program manager, team leader, supervisor, or coordinator, depending on the specific structure and terminology used within the organization. They are responsible for managing the day-to-day operations, setting goals and objectives, coordinating activities, and ensuring that the work is carried out effectively and efficiently.

At this level, leaders often have direct oversight of staff members and are responsible for providing guidance, support, and mentorship to their team. They may also be involved in budgeting, resource allocation, and performance evaluation.

It's important to note that the specific organizational structure and titles may vary across different public health agencies and institutions. The level of leadership and corresponding titles can also differ depending on the size and complexity of the organization.

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The answer is c while spinning down from 500.0 rpm to rest, a solid uniform flywheel does of work. if the radius of the disk is 6.0 kg is its mass.

The amount of work done by the flywheel can be calculated using the formula W = (1/2)I(w²), where W is the work done, I is the moment of inertia, and w is the angular velocity. Since the flywheel is spinning down from 500.0 rpm to rest, w can be calculated by converting 500.0 rpm to radians per second (500.0 rpm = 52.36 rad/s).
The moment of inertia of a solid uniform flywheel can be calculated using the formula I = (1/2)mr², where m is the mass and r is the radius of the disk. We are given that the radius of the disk is equal to its mass, so we can substitute r = m into the moment of inertia formula to get I = (1/2)m(m²) = (1/2)m³.
Now we can plug in the values for w and I into the work formula to get W = (1/2)(1/2)m³(52.36²) = 688.36m³.
To find the mass of the flywheel, we can rearrange the work formula to solve for m: m = (2W/688.36)⁰°³. Plugging in the value of W, we get m = (2x(work done by flywheel)/688.36)⁰°³.
Calculating this expression for each of the answer choices, we get:
a) m = (2x(688.36x5.2³)/688.36)⁰°³ = 5.2 kg
b) m = (2x(688.36x4.4³)/688.36)⁰°³ = 4.4 kg
c) m = (2x(688.36x6.0³)/688.36)⁰°³ = 6.0 kg
d) m = (2x(688.36x6.8³)/688.36)⁰°³ = 6.8 kg

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Answer:

Your answers are Continental crust and Mountain range.

Explanation:

Continental crust is the first blank, and Mountain range the second.

I hope I helped, and I always appreciate Brainliest!!! :)

Answer:

\(s=-38.332m\)

Explanation:

From the question we are told that

Cylinder of mass \(m=2.90 kg\)

Radius \(R=30.0 m\)

Mass of bucket \(M_b= 1.90 kg\)

Fall time \(T_f= 3.70 seconds\)

Generally the tension the bucket is mathematically given by

\(T-mg=ma\)

For cylinder

 \(T=I*\alpha\)

 where

\(I=1/2mR^2\)

\(a=R*\alpha\)

Giving

\(T=-1/2mR\alpha\)

Therefore

\(a=\frac{-mg}{m+1/2m}\)

\(a=\frac{-(1.9*9.81)}{1.9+0.5*(2.9)}\)

\(a=-5.563880597 \approx -5.6m/s^2\)

Generally the Newton's equation for motion is mathematically represented as

 \(s=ut+1/2at^2\)

 \(s=0(3)+1/2*-5.6*(3.7)^2\)

\(s=-38.332m\)

Answer:

The correct option is (C).

Explanation:

Electric current can be direct or alternating.

The direct current flows only in one direction. It is unidirectional.

The alternating current or an C current reverse its direction periodically.

So, the correct statement regarding the alternating current is (c) i.e. Electrons reverse direction periodically.

The shortest chain sling ACB for a movable bin is  1.228 m.

The question is not complete. A similar question is in the attachment. Use the image in a similar question for this problem. Look at the picture. In the system works

Triangle ABC is an isosceles triangle. If ∠ CAB = ∠ CBA = θ.

According to Newton's first law, in the y-axis

∑ F = 0

w - T₁y - T₂y = 0

T₁y + T₂y = 2,100

T₁ sin θ + T₂ sin θ = 2,100

5,000 sin θ + 5,000 sin θ = 2,100

10,000 sin θ = 2,100

sin θ = 2,100 ÷ 10,000

sin θ = 0.21

θ = sin⁻¹ (0.21)

θ = 12.12°

Look at AOC

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If one travels away from the center of a mid-ocean rift (ridge) zone, the rock on either side of the rift zone gets progressively younger.

Hence, the correct option is A.

When one travels away from the center of a mid-ocean rift zone (ridge), the rock on either side of the rift zone gets progressively younger.

This is because at the mid-ocean ridge, new oceanic crust is formed through volcanic activity. As tectonic plates move away from the ridge, new magma rises to fill the gap, solidifies, and forms new rock.

Therefore, the rocks farther away from the ridge are younger compared to the rocks closer to the ridge.

Hence, the correct option is A.

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Answer:

Technician A is correct

Explanation:

The statement "charging system is needed to keep the battery fully charged and recharge the battery after starting" is correct

from technician's B point of view, that the charging system supplies electrical current needs after engine start is incorrect.

In-fact the charging system is dedicated to the battery alone, the electrical needs of the system is gotten from the battery.

a) The kinetic energy of the dart after it is thrown is 2.376 J.

b) The speed of the dart is 18.45 m/s.

c) If the dart were thrown straight upwards, the maximum height it would reach is 17.0 m.

a) The work done on the dart by the applied force is given by:

work = force x distance = 4.40 N x 0.54 m = 2.376 J

Since no energy is lost due to friction, all of this work is converted to the kinetic energy of the dart:

kinetic energy = work = 2.376 J

b) The kinetic energy of the dart can also be expressed as:

kinetic energy = (1/2) x mass x velocity^2

Rearranging this equation gives:

velocity^2 = (2 x kinetic energy) / mass

Substituting the values from part a) gives:

velocity^2 = (2 x 2.376 J) / 0.028 kg = 340.29 m^2/s^2

Taking the square root of both sides gives:

velocity = 18.45 m/s

c) When the dart is thrown straight upwards, its initial vertical velocity is zero. The maximum height it will reach can be calculated using the formula:

maximum height = (initial velocity^2) / (2 x acceleration)

where acceleration is the acceleration due to gravity, which is approximately 9.81 m/s^2.

Substituting the speed calculated in part b) gives:

maximum height = (18.45 m/s)^2 / (2 x 9.81 m/s^2) = 17.0 m

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Answer:

4200 J/°C/kg

Explanation:

The formula for heat transfer is given by :

Q= m*c*ΔT  where;

Q= heat transferred = 6930 J

m=mass of the liquid = 0.330 kg

c= specific heat capacity=?

ΔT = 25-20 = 5.0°C

Applying the values in the formula as;

Q= m*c*ΔT

6930 = 0.330 * c * 5

6930 = 1.65 c

6930/1.65 = c

4200 = c

c= 4200 J/°C/kg

Kinetic energy is associated with movement, while potential energy is stored energy. Mechanical energy can refer to both kinetic and potential energy, depending on the context. Biodiesel energy refers to the energy produced by converting organic matter into fuel and is not directly related to movement or stored energy.

The relationship between Kinetic and Potential Energy is that they are both forms of energy that are associated with an object's motion or position. Kinetic Energy is the energy of motion, while Potential Energy is the energy of an object's position or stored energy. As an object moves, its Kinetic Energy increases, and as it moves higher, its Potential Energy increases. The two energies are inter-convertible, and the total energy of the system is always conserved. The sum of Kinetic and Potential Energy is known as the total mechanical energy of the object.

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Answer:

The gas law formula that should be used to solve the opportunity is;

Constant temperature, initial P·V = final P·V

Explanation:

From the question we have;

The initial volume of the cylinder, v₁ = 3.0 cc

The initial pressure of the gas in the cylinder, p₁ = 0.8 atm

The initial temperature of the gas in the cylinder, T₁ = Room temperature

The final volume of the cylinder, v₂ = 1.0 cc

The final pressure of the gas in the cylinder = p₂

The final temperature of the gas in the cylinder, T₂ = Room temperature

The gas law formula that should be used to solve the opportunity is Boyle's law which states that at constant pressure the pressure, of a given mass of gas is inversely proportional to the volume of the gas

Mathematically, Boyle's law can be expressed as follows;

P ∝ V

∴ P₁·V₁ = P₂·V₂

Which gives;

Constant temperature, initial P·V = final P·V

Answer:

mass, weight

Explanation:

mass is constant, and weight is dependant on your location

Answer:

I think d

Explanation:

because distance j

has to be the last one that's the only one with distance

Answer:

nuclear fission

Answer:

I know

Explanation:

it gets filterd out

The soil loss in  \(Mg ha^{-1}\) (Ton/ha) if the bulk density of the soil is 1.01  \(Mg m^{-3}\)  is option a. 0.202 Mg/ha.

For expressing the soil loss in \(Mg ha^{-1}\), need to convert the units appropriately. First, convert the soil loss from millimetres (mm) to meters (m) by dividing it by 1,000 (1 mm = 0.001 m). Thus, the soil loss is 0.0002 m.

Next, calculate the volume of soil lost per unit area (ha). The volume can be obtained by multiplying the soil loss (0.0002 m) by the area (ha). Since the bulk density of the soil is given as 1.01 \(Mg m^{-3}\), can convert the volume to mass by multiplying it by the bulk density.

Using the formula:

Soil loss (Mg ha-1) = Soil loss (m) × Bulk density (\(Mg m^{-3}\)) × Area (ha)

Substituting the values:

Soil loss (\(Mg ha-1\)) = 0.0002 m × 1.01 \(Mg m^{-3}\) × 1 ha

Calculating the result:

Soil loss (\(Mg ha-1\)) = 0.0002 × 1.01 = 0.000202 \(Mg ha-1\)

Therefore, the correct answer is option a. 0.202 Mg/ha.

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Answer:

In reverse faults, the hanging wall moves upwards relative to the footwall.

The group that will make the car travel closest to 5 m/s when it is at the bottom of the first will is of:

Group C.

The velocity that each car will assume at the bottom of the hill is given by the equation presented as follows:

v = square root (2gh + kx²/m).

The parameters are given as follows:

The parameters are given by the table in this problem, hence the velocities of each car are given as follows:

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Answer: group C

Explanation:

The chemical makeup of a star's surface is obtained by examining the star's spectrum.

By analyzing the light emitted by a star, scientists can determine the elements present in its atmosphere.

When a star's light passes through a prism, it separates into its component colors, forming a spectrum. This spectrum contains dark gaps known as absorption lines, which result from atoms in the star's atmosphere absorbing specific wavelengths of light.

By comparing these absorption lines to the known spectral lines of elements on Earth, scientists can identify the chemical composition of the star's atmosphere.

This technique, known as spectroscopy, has allowed astronomers to identify a wide range of elements present in stars, from hydrogen and helium to trace amounts of heavier elements like iron and nickel.

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Answer:(d) mass

Explanation: The kilogram is the standard mass unit that is used almost globally and is the SI unit of mass. The kilogram weighs 9.8 Newtons under normal conditions on the surface of the Earth, and Newton is the corresponding SI unit of force and weight.

At latitude 50 degrees N, the celestial equator will cross the meridian at an altitude of 50 degrees in the north.

At latitude 50 degrees N, the celestial equator crossing the meridian refers to the moment when the celestial equator (an imaginary circle projected onto the celestial sphere) intersects the observer's meridian (a line passing through the zenith and the celestial poles). The altitude of an object in the sky is the angle between the object and the observer's horizon. In this case, we are interested in the altitude of the celestial equator at the moment of crossing the meridian.

Given the latitude of 50 degrees N, which is above the equator, the celestial equator will appear to be lower in the sky when crossing the meridian. Since the celestial equator is inclined to the celestial poles at an angle equal to the observer's latitude, which is 50 degrees in this case, the altitude of the celestial equator at the moment of crossing the meridian will be equal to the observer's latitude. Therefore, at latitude 50 degrees N, the celestial equator will cross the meridian at an altitude of 50 degrees in the north.

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Answer:

When boiling occurs, the more energetic molecules change to a gas, spread out, and form bubbles. These rise to the surface and enter the atmosphere. It requires energy to change from a liquid to a gas. In addition, gas molecules leaving the liquid remove thermal energy from the liquid. Therefore the temperature of the liquid remains constant during boiling.

Answer:

The answer is C. Series.

For an observer located on the equator, the azimuth of a star due east will be 90 degrees. This is because the equator is the imaginary line that runs around the middle of the Earth, dividing it into the Northern and Southern Hemispheres.

Due east is defined as the direction that is perpendicular to the meridian that passes through the observer and the North Pole, and since the equator is perpendicular to this meridian, the azimuth of a star due east will be 90 degrees. It's important to note that this only applies to stars that are located exactly due east, and the azimuth of stars located slightly north or south of due east will be slightly different. Additionally, the azimuth of stars changes throughout the night as the Earth rotates, so the azimuth of a star due east at one time may be different from its azimuth at a different time.

For an observer located on the equator, the azimuth of a star due east will be 90 degrees. In this case, the observer is at the point where latitude is 0 degrees, and due east refers to a direction perpendicular to the north-south line. Azimuth is the angular measurement of an object's position in the sky, starting from true north (0 degrees), moving eastward (positive) along the horizon. Thus, for a star due east, the azimuth will be 90 degrees.

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Answer:

Yeah it's right there from the one next to the exclamation point

Answer:

its not there

Explanation:

its literally not there

The moment of inertia of a bicycle wheel of 65cm diameter and mass 1.1 kg is 0.116 Kg m^2.

What is moment of inertia?

Moment of inertia can be defined as the tendency of any object to remain in the state of rest or a constant rotational velocity which can be calculated by I = mr^2, where I is moment of inertia, m is mass and r is radius.

The moment of inertia of the bicycle wheel can be calculated as,

diameter of the bicycle wheel = 65 cm = 0.65 m

radius = d/2 = 0.65 m / 2 = 0.325 m

I = mr^2 = 1.1 Kg x (0.325m)^2 = 0.116 Kg m^2

Therefore the moment of inertia of the bicycle wheel is 0.116 Kg m^2.

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When the ball was kicked, its initial speed was roughly 12.6 m/s.

We can use the kinematic equations to solve for the initial speed of the ball. We know that the ball is kicked horizontally, so there is no initial vertical velocity. We also know the horizontal distance traveled and the angle of the ball's trajectory at landing.

Using the equation for horizontal distance, we have:

d = v₀t

where d is the horizontal distance (55 m), v₀ is the initial speed, and t is the time the ball is in the air.

Using the equation for vertical distance, we have:

h = (1/2)gt²

where h is the maximum height of the ball and g is the acceleration due to gravity (9.8 m/s²). At the maximum height, the vertical velocity is zero. We can solve this equation for t:

t = √(2h/g)

where √ is the square root. We can substitute the given angle of 43º to find the maximum height:

h = (v₀sinθ)²/(2g)

where θ is the angle (43º) and sinθ is the sine of the angle (0.682).

Substituting this into the equation for t, we have:

t = √(2(v₀sinθ)²/(2g))/g

Simplifying this, we get:

t = (v₀sinθ)/g

Now we can substitute both expressions for t into the equation for horizontal distance and solve for v₀:

d = v₀((v₀sinθ)/g)

Simplifying this, we get:

v₀² = gd/sin(2θ)

Substituting the given values, we get:

v₀² = (9.8 m/s²)(55 m)/sin(2(43º)) = 157.5

Taking the square root of both sides, we get:

v₀ ≈ 12.6 m/s

Therefore, the initial speed of the ball when kicked was approximately 12.6 m/s.

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