Which location on the map above is a source of North Atlantic deep water?

A

B

C

D

The braking distance and the speed of a vehicle involved in a traffic accident can be calculated if the length of the skid mark is known.

Let's solve for the given parameters: Given: Skid mark length = 60 ft Road grade = 4% Speed limit = 25 mph Step-by-step solution: The braking distance (BD) can be calculated as follows:\(BD = (Skid mark length)^2 / (30 x Road grade)BD = (60)^2 / (30 x 0.04)BD = 45,000 / 1.2BD = 37,500 ft\) The vehicle was travelling downhill, so the distance needed to stop will be the same as on flat land.

The total stopping distance (TSD) of a vehicle is given by: \(TSD = Thinking distance + Braking distance\) Let's assume the thinking distance to be 1.5 times the speed of the vehicle in mph. \(TSD = 1.5 x Speed + BD\)Substituting the values we get,\(25 = 1.5 x Speed + 37,500Speed = (25 - 37,500) / 1.5Speed = -25,000 mph.\)

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Answer:

I thinks its c

Explanation:

I hope this helps :)

just know this is my answer but some people have the same answers so i always give creidts

ANSWERS ------> 50 Watts.

credits to: ASAR2000

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Answer:

I guess answer is 10m/s.

Explanation:

Kinetic Energy=1/2 mv^2

or,2000J=1/2×10kg×v^2

or2000J=5kg.v^2

or,2000J/5kg=v^2

or,100J/kg=v^2

or,v=10m/s

Answer: the answer is carbon monoxide

Explanation:

hope this helps :)

Answer:

Electric eels DO endanger themselves by generating electricity. They frequently shock themselves.

That is one animal but I hope it helps!!!

The answer is, time = 10 secs

Given:

Initial Velocity =  = 8.0 m/s

Final Speed =  = 28.0 m/s

Acceleration = a = ?

Required:

Time = t = ?

Formula:

2 = (28-8)/t

2 = 20/t

t = 20/2

t = 10 seconds

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Whether your linear regression model fits the data better than a model with no independent variables is determined by the F-test of overall significance.

When we examine how alternative regression statistics, like R-squared, fit with the F-test of overall significance. How well your model fits the data is indicated by R-squared, and the F-test is related to it.

An extremely adaptable statistical test is the F-test. They have a wide range of applications. F-tests can assess the fits of various linear models since they can examine numerous model terms at once. T-tests, on the other hand, can only evaluate one term at a time.

The F-test of overall significance is the hypothesis test for this relationship. If the overall F-test is significant, you can conclude that R-squared does not equal zero, and the correlation between the model and dependent variable is statistically significant.

Therefore, Whether your linear regression model fits the data better than a model with no independent variables is determined by the F-test of overall significance.

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Answer:

it is correct

Explanation:

Though no rounded numbers can be defined as accurate, if we were going by people's discovery, and research, we can define that the number, g = 9.8m/s^2, is accurate

In the late 19th century, studies of spectral lines and certain other phenomena were conducted, which helped in the development of quantum mechanics. The Bohr Model of the atom was the first atomic model to describe the atom's internal structure. It became clear, however, that the Bohr model was only successful for atoms with one electron, such as hydrogen. Atoms with more than one electron were more difficult to explain with this model.

Therefore, it became necessary to come up with a new model of the atom that could explain atoms with more than one electron. The quantum-mechanical model of the atom became necessary to overcome the limitations of the classical physics. According to classical mechanics, electrons should release electromagnetic radiation as they move in their orbits, which causes their orbit to collapse and the electrons to spiral into the nucleus. This theory was unable to explain the stability of atoms with more than one electron. As a result, the quantum-mechanical model of the atom was developed to overcome this limitation. The quantum-mechanical model is a model of the atom that combines quantum mechanics with classical mechanics.

In the quantum-mechanical model of the atom, electrons are not assumed to move in specific orbits. Rather, they move in orbitals, which are regions of probability where electrons are likely to be found. The quantum-mechanical model is a more accurate representation of the behavior of electrons in atoms. This is because it takes into account the wave-like properties of electrons, which classical mechanics does not. The quantum-mechanical model of the atom is essential for our understanding of chemical bonding. Chemical bonding is the process by which atoms combine to form molecules. The properties of a molecule depend on the arrangement of its atoms and the arrangement of electrons around the atoms.

The quantum-mechanical model allows us to predict the arrangement of electrons in molecules, which is essential for understanding chemical bonding. In conclusion, the quantum-mechanical model of the atom became necessary because the classical mechanics were unable to explain the behavior of electrons in atoms with more than one electron. The quantum-mechanical model is more accurate than the classical mechanics and has become essential to our understanding of chemical bonding.

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The absence of external force in the outer space, allows the piece of rock to continue moving at the same velocity for thousands of years.

The outer space is almost an absolute vacuum, because it's nearly empty. There is no matter such as air in the outer space that will provide an external force needed to change the velocity of the piece of rock.

From Newton's first law of motion, an object in a state of rest or uniform motion in a straight line, will continue in that state unless it is acted upon by an external force.

Thus, the absence of external force in the outer space, allows the piece of rock to continue moving at the same velocity for thousands of years.

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Answer:

inertia

Explanation:

If you look away from the road for just two seconds, your chance of having a crash actually increases significantly. It is estimated that taking your eyes off the road for just two seconds doubles your risk of a collision.

This is because in that short amount of time, your vehicle can travel a considerable distance, and you may not be aware of potential hazards or changes in road conditions. It is essential to stay focused and alert while driving to ensure your safety and the safety of those around you.

A collision is an event in which two or more objects come into contact with each other, resulting in a transfer of energy and/or momentum between the objects. Collisions can be classified into different types based on the nature of the contact, the forces involved, and the resulting motion of the objects.

Elastic collisions occur when the objects bounce off each other without any deformation or loss of kinetic energy. In this type of collision, the total kinetic energy of the system is conserved. An example of an elastic collision is the collision between two billiard balls.

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Full question:

If you look away from the road for just two seconds, your chance of having a crash actually __________.

Looking away from the road for just two seconds significantly increases your chance of having a crash because it means you're not fully focused on driving. This lack of focus is a major cause of accidents. Therefore, continued attention on the road is vital.

If you look away from the road for just two seconds, your chance of having a crash actually increases significantly. This is because 2 seconds is a substantial amount of time in a high-speed situation, where situations and obstacles can arise suddenly. Taking your eyes off the road when driving means you are not fully focused on the task, which is a major cause of accidents. It is essential to maintain complete attention when driving to prevent potential hazards and to react quickly to changing circumstances.

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A minimum of four satellites are required for the Global Positioning System (GPS) to accurately determine a user's location.

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Answer:

latitude = 44.326859 and longitude = -71.213783

Explanation:

latitude = 44.326859 and longitude = -71.213783

Answer:

1) CO2

2) CO2 and CaO

3) MgO

4) H20 and O2

5) CaCl2, CO2, H2O

Explanation:

Now let us try to put down the reactions here;

1) C(s) + O2(g) -------> CO2(g)

2) CaCO3(s) -------> CaO(s) + CO2 (g)

3) 2Mg(s) + O2(g)------> 2MgO

4) 2H2O2(aq) --------> 2H2O(l) + O2(g)

5) CaCO3(s) + 2HCl(aq) ------> CaCl2(aq) + CO2(g) + H2O(l)

Note that a chemical reaction equation is only said to be balanced when the number of atoms of each element on both sides of the reaction equation are exactly the same.

Answer:

Explanation:

Lori's family is on a road trip. They split

their drive into the five legs listed in the

table. Find the average velocity for each

leg of the trip. Then arrange the legs of

the trip from lowest velocity to highest so

that's why lori family e, b, a, C, d, hsas the

full explanation acc to the question

The wall is positively charged, whereas it is negatively charged. If a woollen fabric is not used to massage it, it will not do so. When the sand was drawn inside the balloon, the same thing occurred.

Positive charges pull away from negative charges. The balloon will attract the wool fabric if it is not touched since it contains an equal balance of negative and positive charges. Both balloons will reject one another when they are brushed with the wool cloth because they both receive negative charges.

Positive and negative particles make up the water. Because positive and negative ions are attracted to one another, when you bring the balloon near the water, the positively charged water molecules will pull the water in the direction of the negatively charged balloon.

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Answer:

The experiments are not shown, so I will answer in a general way.

By the first Newton's law, an object will only change it's velocity if there is a net force different than zero acting on the object.

Then in the experiments (depending on the experiment), you can see different things.

If an object is not moving and you apply a force in it, the object will move.

If an object is moving and you apply a force in the opposite direction of it's motion, the motion will: decrease the speed, stop at all, or move in the opposite direction. Depending on the force that you apply.

An excellent experiment (but hard to do) is dropping an object from a really high place.

The gravitational force will pull down the object and the object will start to increase it's velocity.

But there is the air resistance, that opposes to this motion and increases with the speed of the object.

Then there is a given speed such that the air resistance force will be equal to the gravitational force, then we have a balanced force (the net force is zero) which means that the object will keep falling at a constant velocity.

Answer:

Explanation:

Since the fans are blowing in opposite directions, the net force stays the same and so does the velocity. (I wrote this and got it right)

A frog of mass 0.5 kg jumps vertically upward with the initial velocity is (B) Pave = 2.5 W, Pinst = 0

The average power exerted by gravity on the frog from the start of the jump to its highest point (Pave),

Pave = ΔPE / Δt

where ΔPE is the change in potential energy and Δt is the change in time.

At the highest point of the frog's jump, its velocity will be momentarily zero. Therefore, the change in potential energy (ΔPE) can be calculated using the formula:

ΔPE = mgh

where m is the mass of the frog, g is the acceleration due to gravity, and h is the height.

Since the frog jumps vertically upward, the height reached is the maximum height of the jump.

h=(v²2) / (2g)

where v is the initial velocity of the frog.

Substituting the given values:

m = 0.5 kg

g = 10 m/s²2

v = 1.0 m/s

h = (1.0²2) / (2 × 10) = 0.05 m

The change in potential energy:

ΔPE = mgh = 0.5 × 10 ×0.05 = 0.25 J

Since the frog momentarily stops at the highest point, the change in time (Δt) can be considered as the time taken to reach the highest point, which can be calculated using:

Δt = v / g

Substituting the values:

Δt = 1.0 / 10 = 0.1 s

The average power:

Pave = ΔPE / Δt = 0.25 / 0.1 = 2.5 W

Therefore, the correct answer is (B) Pave = 2.5 W.

Now let's determine the instantaneous power exerted by gravity on the frog at the highest point (Pinst). Instantaneous power is the power at a specific instant, which can be calculated using the formula:

Pinst = F ×v

where F is the force and v is the velocity.

The force acting on the frog at the highest point is the gravitational force, given by:

F = mg

Substituting the values:

F = 0.5 ×10 = 5 N

Since the frog momentarily stops, its velocity is zero.

Pinst = F ×v = 5 × 0 = 0 W

Therefore, the correct answer is (B) Pinst = 0.

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Evidence doesn't support theories.

A theory is an explanation that's offered to support evidence.

The big bang theory is a proposed mechanism that can explain the observed abundance of the natural elements, the observed distribution of the cosmic microwave background, and the observed expansion of the universe (which itself is a theory that can explain the observed red shift of the light from distant galaxies).

The modulus of elasticity, E, is a measure of a material's stiffness and ability to resist deformation when a force is applied. It is defined as the ratio of stress to strain within the elastic range of the material. In other words, it describes how much a material will stretch or compress under a given force.

The modulus of elasticity is important because it allows engineers to predict how materials will behave under different conditions, such as temperature changes, loading conditions, and other factors. It also helps to determine the maximum load a material can withstand before it starts to deform or break.

In detail, the modulus of elasticity is a fundamental property of a material that describes its ability to resist deformation when subjected to external forces. It is calculated by measuring the stress and strain of the material and using the equation E = σ/ε, where σ is stress and ε is strain.

The modulus of elasticity is important in many areas of engineering, such as structural design, materials science, and mechanics. It helps to ensure that structures and materials are designed and tested to withstand the loads and stresses they will be subjected to, and it provides a basis for comparing different materials and choosing the best one for a particular application.

In summary, the modulus of elasticity, E, is a material property that describes its stiffness and resistance to deformation. It is correctly determined using Hooke's Law and is crucial for predicting the mechanical behavior of materials when subjected to stress.

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The Fourier transform of the signal y[n]=2x[n+3] is 2X(\(e^(^j^w^)\))\(e^(^j^3^w^)\).

When we have a signal y[n] that is obtained by scaling and shifting another signal x[n], the Fourier transform of y[n] can be determined using the properties of the Fourier transform.

In this case, the signal y[n] is obtained by scaling x[n] by a factor of 2 and shifting it by 3 units to the left (n+3).

To find the Fourier transform of y[n], we can use the time-shifting property of the Fourier transform. According to this property, if x[n] has a Fourier transform X(\(e^(^j^w^)\)), then x[n-n0] corresponds to X(\(e^(^j^w^)\)) multiplied by \(e^(^-^j^w^n^0^)\).

Applying this property to the given signal y[n]=2x[n+3], we can see that y[n] is obtained by shifting x[n] by 3 units to the left. Therefore, the Fourier transform of y[n] will be X(\(e^(^j^w^)\)) multiplied by \(e^(^j^3^w^)\), as the shift of 3 units to the left results in \(e^(^j^3^w^)\).

Finally, since y[n] is also scaled by a factor of 2, the Fourier transform of y[n] will be 2X(\(e^(^j^w^)\)) multiplied by \(e^(^j^3^w^)\), giving us the main answer: 2X(\(e^(^j^w^)\))\(e^(^j^3^w^)\).

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An action which is an example of a force which operates at a distance is a pebble falling to the ground. Thus, the correct option is B.

A force is an influence which can be changed upon with the motion of an object. A force can cause an object with some amount of mass to change the velocity of the object, i.e., to accelerate the object. Force can also be described as a push or a pull of the object. A force is a vector quantity because it has both the magnitude and direction.

A pebble falling to the ground level is an example of the force which operates at a specific distance. A force applied on the pebble covers some distance.

Therefore, the correct option is B.

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The mass of the car is calculated as 1021.86 kg. We can calculate the mass of the car by using the formula: mass = Force / acceleration

Given information: Acceleration of the car = 1.83 m/s²

Force acting on the car = 1870 N

We know that Force = mass × acceleration

According to the question, we need to find the mass of the car. We can calculate the mass of the car by using the formula: mass = Force / acceleration

Putting the values in the above equation, we get mass = 1870 N / 1.83 m/s²

So, the mass of the car is: mass = 1021.86 kg

Therefore, the mass of the car is 1021.86 kg.

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The resultant in magnitude was found to be 110 N and the direction was found to be north west.

what are the types of forces ?

Spring Tension

This force acts in the opposite direction of molecular displacement. As in a spring or an elastic rubber band, for example.

Force Applied

The force exerted by our muscles is known as applied force. It is also known as muscular force. For instance, moving a box or kicking a ball.

Air Defense Force

The force exerted by a gas acting in the opposite direction on a body is known as air resistance force. Examples are the forces encountered by a skydiver or a downhill skier, among others.

Normal Strength

It is the force that acts when two surfaces come into contact. This force is perpendicular to the surface and acts in the outward direction. For instance, a box on top of a table.

Tension Force

A rope or thread holding an item experiences this form of force. The tension force is always a pull, never a push. The tensile force is constant throughout the cable. Consider a ball suspended from a string.

Frictional Force

Frictional force is generated when items on a surface attempt to move relative to the surface. For example, when a package is slid over a table.

Electromagnetic Force

These are the electromagnetic and electric interactions between atoms and molecules that aid in the bonding and definition of solid structures. Poles, for example, attract each other in a magnet.

Gravitational Force

The gravitational force can be defined as the force is acting among objects owing to the existence of matter.

therefore the resultant magnitude and the direction was 110N and the direction was north west.

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