Suppose a car's standard tires are replaced with tires 1.20 times larger in diameter. Complete the following sentences. (i) The car's speedometer reading will be 1.44 times too high. 1.20 times too high. accurate. 1.20 times too low. 1.44 times too low. inaccurate by an unpredictable factor. Incorrect: Your answer is incorrect. (ii) The car's fuel economy in miles per gallon or km/L will appear to be

The IMA ( Ideal Mechanical Advantage ) of the system where a 3000 N engine is lifted a distance of 0.5 m is 12

IMA = \(F_{out}\) / \(F_{in}\)

W = F * d

IMA = Ideal Mechanical Advantage

\(F_{out}\) = Output force

\(F_{in}\) = Input force

W = Work done

F = Force

d = Distance

\(F_{out}\) = 3000 N

\(d_{out}\) = 0.5 m

\(d_{in}\) = 6 m

According to law of conservation of energy,

\(W_{in}\) = \(W_{out}\)

\(F_{in}\) \(d_{in}\) = \(F_{out}\) \(d_{out}\)

\(F_{in}\) = ( 3000 * 0.5 ) / 6

\(F_{in}\) = 250 N

IMA = \(F_{out}\) / \(F_{in}\)

IMA = 3000 / 250

IMA = 12

IMA can also be found using,

IMA = \(d_{in}\) / \(d_{out}\)

IMA = 6 / 0.5

IMA = 12

Therefore, The IMA ( Ideal Mechanical Advantage ) of the system is 12

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Answer:Magnetic fields from two sources add up as vectors at each point, so the strength of the field is not necessarily the sum of the strengths1. Magnetic fields are vectors, which means they have direction as well as size. Therefore, the sum of two magnetic fields is not simply the sum of their magnitudes2.

Explanation:

Answer:

YESS well it is partly nessary but it depends on the situation

Explanation:

Answer:

Weathering, erosion, and deposistion are necessary processes in the rock cycle because:

Explanation:

First, start with igneous rocks. magma erupts (Extrusive igneous rocks) or solidifies in the sub-surface of the earth (Intrusive igneous rock). when they are exposed Weathering and erosion occur which is a slow breakdown of rock through the wind, water, or other processes. The weathered pieces (sediments) move to other places by wind or water and get deposited someplace else. When there are enough sediments and there is overburden pressure on these sediments, they become a sedimentary rock. Due to overburden pressure, they become metamorphic rocks. now the thing to understand here is that when metamorphic rocks are exposed, they too undergo weathering and erosion and their pieces also become sedimentary rocks.

The resultant of two displacement vectors having opposite directions is the difference of the two displacements, having the same direction as the smaller vector.

When two displacement vectors have opposite directions, it means they are pointing in opposite ways. In other words, one vector is in the opposite direction of the other. To find the resultant of these vectors, we need to subtract one vector from the other.

If we consider two displacement vectors, let's say vector A and vector B, and they have opposite directions, we can represent them as A and -B.

To find the resultant, we subtract vector B from vector A: A - (-B) or A + B.

The resultant will have the same direction as the smaller vector. This is because when we subtract a larger vector from a smaller vector, the resultant will have the direction of the smaller vector.

Therefore, the correct option is: "The resultant is the difference of the two displacements, having the same direction as the smaller vector."

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Answer:

C your answer would be C

Explanation:

It should be right

The initial velocity of the lander, at t = 0 and just before it reaches the lunar surface, is 64 m/s. This is because the velocity of the lander is given by c = 64 m/s.

Velocity is a vector quantity that describes the rate of change of an object's position with respect to time. It is the magnitude of an object's displacement per unit of time, expressed as a speed in a specific direction.

Velocity is calculated by dividing the change in position (displacement) by the time interval in which the displacement occurs. It has units of distance per time (e.g. meters per second). The direction of velocity is the same as the direction of displacement, and its magnitude represents the speed of an object's motion.

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Answer:

Covalent Bond

Explanation:

Covalent Bonds happen when elements in a compound share electrons to exist together in a stable state as in the diagram

The ball reaches a height of 9.57 meters against gravity.

The acceleration an object experiences as a result of gravitational force is known as acceleration due to gravity. M/s2 is its SI unit. Its vector nature—which includes both magnitude and direction—makes it a quantity. The unit g stands for gravitational acceleration. At sea level, the standard value of g on the earth's surface is 9.8 m/s2.

A body is drawn toward the center of the earth by the force of gravity. Let's have a look at two bodies with masses ma and mb. When two bodies are subjected to equal forces, the force in terms of mass is given by:

The inertial mass of a body is defined as mb = ma [aA/aB].

In response to the gravitational pull of two bodies,

FA = GMmA/r2,

FB = GMmB/r2,

mB = [FB/FA] × mA

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Answer:

Vo (vertical) = Vo sin 30 = 30 m/s / 2 = 15 m/s

Vo (horizontal) = Vo cos 30 = .866 30 m/s = 26 m/s

Answer:

No

Explanation:

Answer:

No

Explanation:

Tornadoes are usally produced in the Midwest regions. Hurricanes are made with water, not clouds. So, no, hurricanes cannot produce tornadoes.

Answer:

option 3

Explanation:

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In a DC generator, the generated electromotive force (emf) is directly proportional to the rotational speed of the generator's armature and the strength of the magnetic field within the generator.

This relationship is described by the equation for the generated emf in a DC generator:

Emf = Φ * N * A * Z / 60

Where:

Emf is the generated electromotive force (in volts),

Φ is the magnetic flux density (in Weber/meter^2\(meter^2\) or Tesla),

N is the number of turns in the armature winding,

A is the effective area of the armature coil (in square meters),

Z is the total number of armature conductors, and

60 is a constant representing the conversion from seconds to minutes.

From this equation, we can see that the generated emf is directly proportional to the magnetic flux density (Φ) and the product of the number of turns (N), effective area (A), and the total number of armature conductors (Z). This means that increasing any of these factors will result in a higher generated emf.

The magnetic flux density (Φ) can be increased by using stronger permanent magnets or increasing the strength of the field windings in the generator.

The number of turns (N) and the effective area (A) are design parameters and can be optimized for a specific generator. Increasing the number of turns or the effective area will result in a higher generated emf.

Similarly, the total number of armature conductors (Z) can be increased to enhance the generated emf.

By controlling and optimizing these factors, the generated emf in a DC generator can be increased, resulting in higher electrical output. However, it is important to note that there are practical limits to these factors based on the design and construction of the generator.

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Answer:

A. 16.67 m/s

Explanation:

Speed or velocity refers to the rate of change in distance over a change in time. That is;

Speed = Distance ÷ time

Where;

Speed is in metre/seconds

Distance is in metre

Time is in seconds.

In this question, Steve throws a football 50 meters in 3 seconds. The average speed can be calculated this:

S = D/t

Where; d = 50m, t = 3s

S = 50/3

S = 16.6666666

S = 16.67m/s

The magnitude of the n.et force on particle B due to the other two particles is  8 x 10¹⁹ N

The net force on particle B due to the other two particles is calculated by applying the formula for electric force.

F = ( kq₁q₂) / r²

where;

Electric force between A and B;

F(AB) = ( 9 x 10⁹ x 10 x 10⁻⁴ x 6.1 x 10⁴ ) / ( 0.73² )

F (AB) = 1.03  x 10¹² N

Electric force between B and C;

F(BC) = ( 9 x 10⁹ x 17.3 x 10⁴ x 6.1 x 10⁴ ) / ( 1.09² )

F (BC) = 8 x 10¹⁹ N

The net force on particle B is calculated as;

F (net) = - F (AB) - F (BC)

F (net) = - 1.03  x 10¹² N  -  8 x 10¹⁹ N

F (net) = -  8 x 10¹⁹ N

F (net) =  8 x 10¹⁹ N towards A

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Answer:

\(I=1.19\times 10^{-2}\ W/m^2\)

Explanation:

It is given that,

Maximum value of magnetic field strength, \(B=10^{-8}\ T\)

We need to find the intensity of the light at that place.

The formula of the intensity of magnetic field is given by :

\(I=\dfrac{c}{2\mu _o}B^2\)

c is speed of light

So,

\(I=\dfrac{3\times 10^8}{2\times 4\pi \times 10^{-7}}\times (10^{-8})^2\\\\I=1.19\times 10^{-2}\ W/m^2\)

So, the intensity of the light is \(1.19\times 10^{-2}\ W/m^2\).

The polynomial relationship between position and time for the bowling ball is linear.

A linear relationship between two variables is a term used to describe a straight-line relationship between the two variables.

Linear relationships can be expressed either in a graphical format or as a mathematical equation of the form y = mx + b.

From the equation of linear relationship between two variable, the highest power of x is one.

The given equation for position and time;

x(t) = vot + xo

From this given equation, the highest power of t is one, hence it is called linear relationship.

Thus, the polynomial relationship between position and time for the bowling ball is linear.

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Answer:

Car B will be travelling after the crash at a constant speed of 20 mph in the same direction as Car A was travelling before the crash

Explanation:

Let \(m_A, m_B\) be the mass of car A resp. car B, \(v_{A0} = 20 \ \text{mph}\) the velocity of car A before the crash, \(v_{B1}\) the velocity of car B after the crash. For car B being at rest before the crash and car A at rest after, it holds \(v_{B0} = v_{A1} = 0\ \text{mph}\).

With conservation of momentum, it holds

\(m_A v_{A0} + m_B v_{B0} = m_A v_{A1} + m_B v_{B1}\)

Zero terms eliminated: \(m_A v_{A0} = m_B v_{B1} \iff m_B = m_A\frac{v_{A0}}{v_{B1}}\)

With conservation of energy and assuming that no conversion of mechanical energy into other forms of energy occurs (through friction etc.), the mechanical energy before and after the crash is simply equated:

\(\frac{1}{2} m_A v_{A0}^2 = \frac{1}{2} m_B v_{B1}^2\)

Inserting the \(m_B\) from above: \(\frac{1}{2}m_A v_{A0}^2 = \frac{1}{2}m_A\frac{v_{A0}}{v_{B1}} v_{B1}^2 \iff v_{A0} = v_{B1} = 20\ \text{mph}\)

Bonus: \(m_B = m_A\frac{v_{A0}}{v_{B1}} = m_A\) (both cars have the same weight)

Answer:

1m/s

Explanation:

Speed of a wave is expressed as;

Speed = frequency × wavelength

Given

Frequency = 2Hz

Wavelength = 0.5m

Required

Speed of the wave

Substitute

Speed = 2×0.5m

Speed = 1.0m/s

Hence the speed is 1.0m/s

Answer:

Explanation:

From the graph, acceleration is zero if a distance of 130 m is overcome. The maximum speed at a height from the ground equal to 200 m - 130 m = 70 m. Further, the apple falls evenly!

According to the graph, if a distance of 130 m is overcome, acceleration is zero. The maximum speed at a height of 200 m - 130 m = 70 m from the ground. In addition, the apple falls evenly.

Terminal velocity is the constant maximum velocity reached by an object falling through a fluid (such as air) when the force of gravity pulling the object downward is balanced by the opposing force of air resistance. Initially, as an object falls, its velocity increases due to the acceleration from gravity. However, as the object accelerates, the air resistance acting upon it also increases. Eventually, a point is reached where the air resistance becomes equal to the force of gravity, resulting in zero net force and a constant velocity. This constant velocity is the terminal velocity.

The graph of acceleration plotted against the height fallen provides information about the changing acceleration of the falling apple as it travels down the building. To determine the height at which terminal velocity is reached, you would need to look for the point on the graph where the acceleration levels off or approaches zero. This indicates that the net force acting on the apple is becoming negligible, implying that terminal velocity has been reached.

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Answer:

Explanation:

Assuming no friction between the roller coaster car and the hill, and neglecting air resistance, the kinetic energy the roller coaster car would have at the bottom of the hill would be equal to its gravitational potential energy at the top of the hill, by conservation of energy.

Answer:

d

Explanation:

this is just common sense, why did you even need to ask?

Answer:

number 3

Explanation:

3 represents runoff

Runoff is the water collected after rainfall that drains from the surface area of land. It will be tricky to choose 4 which is likely a smaller waterbody draining to a bigger waterbody

hope it helped

Answer:

Let there be vectors A and B  where B = -A

Then A + B = 0

Answer:

Magnetism is a physical phenomenon that manifests itself in a force acting between magnets or other magnetized or magnetisable objects, and a force acting on moving electric charges, such as in current-carrying cables. The force action takes place by means of a magnetic field, which is generated by the objects themselves or otherwise. There are natural and artificial magnets. All magnets have two poles called the north pole and the south pole. The north pole of one magnet repels the north pole of another magnet and attracts the south pole of another magnet; the same with south poles.  

Buoyancy Force is the reason for the larger the diameter as the Larger the diameter larger the volume of log rolling and the higher the Buoyancy force which leads to floating the participants.

The floating of any dogy depends upon the Buoyancy force that the body is having or we can say the force which is applied on the water's surface to float on it. And However, Buoyancy depends on three things.

1. Gravitational pull(g)- the force applied by the planet to pull/attract ant mass towards itself. in the case of the earth, it is fixed which is 9.8 ms^-2.

2. The density(p)- It is the mass per volume of any liquid In the case of distilled water it is 997 kg/m³. It may barry for ocean water.

3. Volumn of the body(v)- It is the volume of the body which is floating on water.

So fb =  g*p*v where fb( Buoyancy force) is directly proportional to the volume of the body.

So the Greater the volume of the body higher it will float.

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According to the theory of special relativity, time and space are relative to the observer. This means that time can slow down and distances can shorten for an observer traveling at a speed close to the speed of light.

Therefore, if we could build a spaceship capable of traveling at a speed near the speed of light, we could send a ship to a star that is 500 light-years away and it would return just a few years after we launched it from the perspective of the passengers on the ship. However, for an observer on Earth, the journey would still take 500 years each way.

Similarly, passengers on the ship could make a journey to a star that is 500 light-years away within their lifetimes, even though the journey would still take 500 years from the perspective of an observer on Earth. This is because time slows down for the passengers on the ship as they approach the speed of light.

While special relativity does tell us that we cannot reach or exceed the speed of light, it also tells us that we can get close to the speed of light with much less fuel than we would have guessed from Newton's laws of motion. This is because the mass of an object increases as it approaches the speed of light, which means that it requires less fuel to accelerate it to a high speed.

In conclusion, the effects of special relativity would allow us to build a spaceship that could travel close to the speed of light and make journeys to distant stars within the lifetimes of the passengers on the ship. However, the journey would still take a long time from the perspective of an observer on Earth.

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Explanation:

u= 0 ( because car start rest)

v=400

t=3.5

v-u/t

400-0/3.5

400/3.5

114m/s

f= 12000

f=ma

12000=m*114

m=12000/114

105 kg approx

A person born in the United States is considered a citizen of the country, according to the 14th Amendment's "Citizenship" provision.

Citizens of both the United States and the State in which they live include everyone who was born or naturalised in the country and is subject to its laws. No State may enact or carry out any legislation that restricts the rights or privileges of US citizens; no State may rob anyone of their life, liberty, or property without first providing them with a fair trial; and no State shall deny anyone living under its jurisdiction the equal protection of the law.

Based on the first clause of Section 1,1, the Court has determined that a child born in the United States to Chinese parents who were not qualified for naturalisation themselves is nonetheless a citizen of the United States with all the rights.

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