I just taking this honors class but I don’t understand what to do

We can see that the new velocity of the 2 Kg ball is 6.4 m/s.

Momentum is a measure of an object's motion. It is defined as the product of an object's mass and velocity. In physics, momentum is a vector quantity, meaning it has both magnitude and direction.

The law of conservation of momentum states that in an isolated system, the total momentum of the system remains constant if no external forces are acting upon it.

Given that we know that;

Momentum before collision = Momentum after collision

(4 * 8) + (2 * 0) = (4 * 4.8) + (2 * v)

Let v be the new velocity

32 = 19.2 + 2v

v = 32 - 19.2/2

v = 6.4 m/s

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The result of the ratio of the displacement module of the second body at the point of meeting is 0.5.

To determine the ratio of the displacement of the first body to the displacement of the second body at the moment of their meeting, use the equation of motion:

d = vt + 1/2at²

where d is the displacement, v is the initial velocity, t is the time, and a is the acceleration.

Since the bodies are moving simultaneously towards each other, then assume that their initial velocities are zero. Also, at the moment of their meeting, their displacement will be the same, d₁ = d₂.

Assume that the time at which they meet is t, then:

d₁ = 1/2 * 2.4t²

And the equation for the displacement of the second body:

d₂ = 1/2 * 4.8t²

If d₁ = d₂

then, 1/2 * 2.4t² = 1/2 * 4.8t²

Solving this equation for t and substituting it into the equation for d₁ or d₂, the ratio of the displacement of the first body to the displacement of the second body: d₁/d₂ = 2.4/4.8 = 0.5 or 1/2

So, at the moment of their meeting, the displacement of the first body is half of the displacement of the second body.

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Answer:

The third approach to cross-cultural studies of personality is the combined approach, which serves as a bridge between Western and indigenous psychology as a way of understanding both universal and cultural variations in personality

Explanation:

Answer:

The third approach to cross-cultural studies of personality is the combined approach, which serves as a bridge between Western and indigenous psychology as a way of understanding both universal and cultural variations in personality

Answer:

0.95g/cm3

Explanation:

sorry I did it in a rough paper.

Answer:

\(\boxed {\boxed {\sf 253 \ meters}}\)

Explanation:

We are asked to find the distance a train travels.

We are given the acceleration, initial velocity, and time. Therefore, we will use the following kinematic equation:

\(d=v_it+\frac{1}{2}at^2\)

The train starts at a full stop or a velocity of 0 meters per second. It accelerates at a rate of 0.250 meters per second squared for 45.0 seconds.

Substitute the values into the formula.

\(d= (0 \ m/s)(45.0 \ s) + \frac{1}{2} (0.250 \ m/s^2)(45.0 \ s)^2\)

Multiply the first two numbers. The units of seconds cancel.

\(d= 0 \ m + \frac{1}{2} (0.250 \ m/s^2)(45.0 \ s)^2\)

Solve the exponent.

\(d= 0 \ m +\frac{1}{2} (0.250 \ m/s^2)(2025 \ s^2)\)

Multiply the numbers in parentheses. The units of seconds squared cancel.

\(d= 0 \ m +\frac{1}{2} (0.250 \ m/s^2 * 2025 \ s^2)\)

\(d= 0 \ m +\frac{1}{2} (0.250 \ m * 2025 )\)

\(d= 0 \ m + \frac{1}{2} (506.25 \ m)\)

Multiply by 1/2 or divide by 2.

\(d=0 \ m + 253.125 \ m \\d= 253.125 \ m\)

The original measurements of acceleration and time both have 3 significant figures, so our answer must have the same. For the number we found, that is the ones place. The 1 in the tenths place tells us to leave the 3.

\(d \approx 253 \ m\)

The train travel approximately 253 meters.

Answer:

it’s circle graph

Explanation:

the best type of graph to use to show the percentages of a whole is a circle graph

The minimum time necessary to pull out Margo is 2.64 seconds.

Given the data in the question;

There are two forces acting on Margo, as shown in the image below, the rope Tension acting upward and the force of gravity acting downward.

From Newton's second law of motion:

\(F = m*a\)  

where F is the Force acting on the body, m is the mass and a is the acceleration.

Also, \(F = T - mg\)

So, \(T - mg = ma\)

We know that the value of "g" gravitation due to gravity is \(9.81m/s^2\) and \(1Newton = 1 kg.m/s^2\)

We substitute in our values to find "a"

\(755 kg.m/s^2 - ( 70.0kg*9.81m/s^2) = (70kg * a )\)

\(755 kg.m/s^2 - 686.7 kg.m/s^2 = (70kg * a )\)

\(68.3kg.m/s^2 = (70kg * a )\)

\(a = \frac{68.3kg.m/s^2}{70kg}\)

\(a = 0.9757 m/s^2\)

Now, we set \(v_0 = 0\) to get the minimum time required

From the second equation of motion:

\(s = v_0t + \frac{1}{2} at^2\)

Since \(v_0 = 0\)

\(s = \frac{1}{2} at^2\)

We make time "t", the subject of the formula

\(t = \sqrt{\frac{2s}{a} }\)

We substitute in our values

\(t = \sqrt{\frac{2*3.4m}{0.9757m/s^2} }\)

\(t = 2.63995 s\\\\t = 2.64s\)

Therefore, the minimum time necessary to pull out Margo is 2.64 seconds.

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Answer:

It says the answer. (5 marks.)

Explanation:

The FitnessGram Pacer Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The 20 meter pacer test will begin in 30 seconds. Line up at the start. The running speed starts slowly, but gets faster each minute after you hear this signal. A single lap should be completed each time you hear this sound. Remember to run in a straight line, and run as long as possible.

Answer:

333.5 MJ

Explanation:

ΔV = m·g·Δh

     = 8500 · 9.81 · (15000-11000)

     = 8500 · 9.81 · 4000

     = 333 540 000

     ≈ 333.5 ·10⁶J = 333.5 MJ

The change in potential energy is 333.5 MJ

Potential energy is defined as the energy possessed by an object because of its position relative to other objects, tension within itself, its electric charge, or other factors. Any object that is raised above its rest position has energy stored in it, so it is called potential energy because it has the potential to do work when released.

It can be expressed as:

P.E.= mgh

where, m is the mass of an object measured in grams 'g'

g is the acceleration due to gravity which is \(9.8 m/s^2\)

h is the height measured in meter 'm'

Here,

the given information is

m= 8500kg

Δh= \(h_2 - h_1\) = 15000-11000 = 4,000m

So, P.E. = 850 x 9.8 x 4000 = 333 540 000=  333.5 ·10⁶J = 333.5 MJ

Thus, the change in potential energy is 333.5 MJ

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Answer:

not moving

static actually means lacking in movement or action❤

the answer for the speed of the roller coaster at the top of the loop is v = 14.8 m/s

the minimum speed necessary for the coaster to complete the loop without falling off the track is 11.3 m/s.

(a) To find the speed of the roller coaster at the top of the loop, we can use the equation for centripetal acceleration: a = v^2/r. We know that the radius of curvature is 13.0 m and the downward acceleration of the car is 1.50 g (where g is the acceleration due to gravity, approximately 9.8 m/s^2).

So, we can rearrange the equation to solve for v: v = sqrt(ar)

Plugging in the values, we get: v = sqrt(1.5g * 13m)

v = sqrt(22.5 * 9.8)

v = sqrt(219.5)

v = 14.8 m/s

(b) To find the minimum speed necessary for the coaster to complete the loop without falling off the track, we can use the same equation for centripetal acceleration, but this time we will use the minimum value of a that will keep the car on the track, which is equal to the acceleration due to gravity (g).

So, we can rearrange the equation to solve for v: v = sqrt(ar)

Plugging in the values, we get: v = sqrt(g * 13m)

v = sqrt(9.8 * 13m)

v = sqrt(127.4)

v = 11.3 m/s

So the minimum speed necessary for the coaster to complete the loop without falling off the track is 11.3 m/s.

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Explanation:

Newton’s second law is a quantitative description of the changes that a force can produce on the motion of a body. It states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.

Clastic chemical rocks are fragments of rocks called clasts, while biochemical sedimentary rocks are composed of preserved remains of  dead organisms (fossils).

Biochemical sedimentary rocks or fossils are biological associated rocks formed by the accumulation of organic matter which is due to the presence of organisms that lived in the geological past, while clastic rocks are clasts, i.e. fragments of rock composed of minerals on the Earth's crust.

Therefore, with this data, we can see that biochemical sedimentary rocks can also be defined as fossils, while clastic rocks are clasts.

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Answer:

Heat.

Explanation:

Ily bbg keep slangin.

The magnitude of the resultant vector to round the answer to the nearest tenth, we look at the digit in the hundredth's place. If this digit is 5 or greater, we round up. If it is less than 5, we round down.

In the study of physics, we use vectors to represent quantities that have both direction and magnitude. It is often the case that we want to add two or more vectors together to obtain a single vector that represents the net result of these additions. The process of adding two or more vectors together is known as vector addition.The magnitude of the resultant vector is the length of the line that represents it on a scale drawing.

When we add two or more vectors together, the resultant vector is the vector that represents the net result of these additions. To find the magnitude of the resultant vector, we use the Pythagorean theorem, which states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.

In the case of vector addition, the hypotenuse is the resultant vector, and the other two sides are the component vectors. If we have two vectors a and b, the magnitude of the resultant vector is given by the following equation:|R| = √(ax2 + bx2)where R is the resultant vector, a and b are the component vectors, and x is the angle between the vectors.

For example, if the answer is 12.345, we would round it to 12.3.

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Answer:

These destructive frequencies entrain the thoughts towards disruption, disharmony, and disunity. Additionally, they also stimulate the controlling organ of the body — the brain — into disharmonious resonance, which ultimately creates disease and war.

Answer:

Explanation:

It's graph A because the pressure in the tire is increasing as the amount of air going into it increases. B says the pressure drops exponentially as air goes in, and C says that the pressure stays the same as air goes in. Pressure in a tire increases proportionally to the amount of air in it.

According to the solubility curve, KCl is soluble in water at a rate of about 40 grammes per 100 g. Given that we have 100 mL, or 100 grammes, of water, the mass of KCl that will dissolve is similarly 40 grammes.

\(Ce_2(SO_4)_3\) is soluble in water at a rate of around 30 grammes per 100 grammes at 100 °C. \(Ce_2(SO_4)_3\) will therefore dissolve in 100 mL of water at a mass of 30 grammes.

\(NH_4Cl\) dissolves in water at a rate of around 90 grammes per 100 grammes at 90 °C. The mass of \(NH_4Cl\) that will dissolve in 100 mL of water is similarly 90 grammes.

We must ascertain the solubilities of the abovementioned chemicals at 15°C in order to ascertain which substance is most soluble at that temperature.

\(NaNO_3\) has the highest solubility at 15°C, as seen by the solubility curve. At 15°C, \(NaNO_3\) dissolves in water at a rate of about 80 grammes per 100 g.

Therefore, at 15°C, NaNO3 is the most soluble substance among the three given substances.

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Angle of deviation can be defined as the angle between the incident ray and the emergent ray when light passes through a prism.

When speaking of Angle of deviations, the incident ray is the ray of light that hitss the prism, while the emergent ray is the ray of light that emerges from the prism.

The angle of deviation is noted to be always greater than zero, and it can be used to calculate the refractive index of the prism.

The angle of deviation can be calculated using δ = i + r - A

δ is the angle of deviation

i is the angle of incidence

r is the angle of refraction

A is the angle of the prism

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The way that the clock at the rim of the space station compare with one residing at the hub is that Rim clock will always runs slower.

The behavior of a clock sitting on the surface of a planet with a surface gravity of one g is the same.

For instance, timekeeping on the International Space Station (ISS) is slightly slower than that of reference clocks on Earth. This explains why astronauts on the International Space Station (ISS) mature more slowly, lagging by 0.007 seconds every six months.

Ground-based atomic clocks have served as the industry standard for timekeeping since the 1950s. These clocks use the extremely steady and accurate frequencies of light emitted by particular atoms to keep time.

Therefore, Satellite clocks run slower due to more velocity but faster due to reduced gravity. Clocks move more slowly at the ISS orbital height because velocity dominates. At GPS altitude, clocks move more quickly due to the influence of gravity.

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Tire inflation should be checked when the tires are cold.

Tire inflation can be defined as a phenomenon in which the amount of air pressure (compressed air) in the tire of an automobile vehicle is greater than the recommended (standard) amount of air pressure that is required by the manufacturer, in order to enhance safety.

This ultimately implies that, tire inflation is a measure of the total amount of air pressure (compressed air) in the tire of an automobile vehicle as recommended by the manufacturer of the vehicle.

Additionally, proper tire inflation enhances safety and it can greatly influence gasoline mileage of an automobile vehicle. However, it is only appropriate to check tire inflation when the tire is cold.

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The graph below shows the motion of a person leaving theater, line segment C represent : The person is moving away from the theater.

In physics, motion is a change with time of the position or orientation of a body. Motion along a line or a curve is called as translation whereas motion that changes orientation of a body is called rotation.

Motion is a change in position of an object over the  time and is described in terms of displacement, distance, velocity, acceleration, time and speed.

Change in position of a body with time when compared with another body is known as  motion.

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1. A complete fitness and exercise program should incorporate three basic components: Endurance (Aerobic), Flexibility, and Strength. Each of these components has specific guidelines, which govern their effectiveness

Answer:

Approaches mathematical learning through inquiry

-Explore real contexts, problems, situations, and models

-Learning through doing shifts the focus on the students

-Problems have multiple entry and exit points

-Links to other disciplines

Explanation:

quizlet

Answer:

potential energy is a form of energy that a body possess to its position.Potential energy is equal to potential energy is equal to mass times acceleration due to gravity times height.

Answer:

These are some of the characteristics of ASD:

problems with social interaction with others. ...

unusual interest in objects.

need for sameness.

great variation in abilities.

under or over reaction to one or more of the five senses: sight, touch, taste, smell, or hearing.

repeated actions or body movements.

Explanation:

hope this helps

From the first circuit (see attached), it is correct to state that I₄ = 40mA. See the explanation below.

A path that is designed to transport electric current is that is referred to as a circuit.

I = 200mA

= 20mA + 140mA + I₄

I₄ = 200 - 160

I₄ = 40mA

From the above, we can rightly posit:

R₄ = 3/(40x 10⁻³)

= 75 Ω

Hence

V₆ =  V₄ - V₅

= 3v - 2v

= 1v

R₆ therefore, =

V₆/I₆

= 1/ (40 x 10 ⁻³)

= 14.28 Ω

I₃ = I₄ + I₆

= 40 + 140

= 180mA

R₃ = 9/(180 x 10⁻³)

= 50Ω

R₂ = 12/20 x (10⁻³)

= 60 Ω

Then,

Vbattery =

200 x 10⁻³ x90

= 18 volts

The above indices is used to complete the image. See Circuit Image II.

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Answer:

22.4 cm

Explanation:

The total mechanical energy of the particle Etot = K + U where K = kinetic energy = 1/2mv² where m = mass of particle = 100 g =0.1 kg and v = speed of particle = 2 m/s and U = potential energy = 1/2kx² where k = spring constant and x = displacement

Etot = K + U

U = Etot - K

U = Etot - 1/2mv²

Since Etot = 0.45 J, substituting the values of the other variables into the equation, we have

U = Etot - 1/2mv²

U = 0.45 J - 1/2 × 0.1 kg × (2 m/s)²

U = 0.45 J - 1/2 × 0.1 kg × 4 m²/s²

U = 0.45 J - 0.1 kg × 2 m²/s²

U = 0.45 J - 0.2 J

U = 0.25 J

Now U = 1/2kx² and the angular frequency ω = √(k/m) ⇒ ω²m = k

So, U = 1/2ω²mx²

x² = 2U/ω²m

x = (√2U/m)/ω

since ω = 10 rad/s, substituting the values of the variables into the equation, we have

x = (√2U/m)/ω

x = (√2 × 0.25 J/0.1 kg)/10 rad/s

x = (√0.5 J/0.1 kg)/10 rad/s

x = (√5 J/kg)/10 rad/s

x = 2.24/10 m

x = 0.224 m

x = 22.4 cm

The acceleration due to gravity (g) on Earth varies across different locations due to factors like latitude, altitude, and local geology. Despite these variations, a standardized average value of g is commonly used for practical purposes.

The value of acceleration due to gravity (g) does indeed vary from place to place on the surface of the Earth. This variation occurs due to several factors that influence the gravitational field strength experienced at different locations. The following factors contribute to the variation in the value of g:

1. Latitude: The Earth is not a perfect sphere but an oblate spheroid, flattened at the poles and bulging at the equator. As a result, the distance from the center of the Earth to the surface is slightly greater at the equator than at the poles. This variation in distance affects the gravitational force and results in a slightly lower value of g at the equator compared to the poles.

2. Altitude: The distance from the Earth's center to a specific location affects the gravitational pull experienced at that location. As altitude increases, moving away from the Earth's surface, the gravitational force decreases, leading to a lower value of g.

3. Local Geology: The distribution of mass within the Earth's crust can cause gravitational variations. Areas with denser materials, such as mountains or regions with underground mineral deposits, may experience slightly higher values of g due to the increased gravitational pull from the additional mass.

4. Topography: Variations in the shape and composition of the Earth's surface, such as variations in mountains, valleys, and ocean trenches, can cause local gravitational anomalies. These anomalies can result in slight variations in the value of g at different locations.

It is important to note that while the variation in g exists, it is relatively small and does not significantly impact daily activities. In most practical applications, a standard average value of g (approximately 9.8 m/s²) is used for simplicity and convenience.

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Answer:

a) 0.47MW

b) 39.24%

Explanation:

In order to find the power needed for the elevator to operate at its maximum capacity, we can make use of the following formula:

P=Fv

where P is the power, F is the force and v is the velocity.

The force the elevator must carry can be calculated with the following formula:

F=mg

where m is the mass of the elevator and g is the acceleration of gravity, so:

\(F=(8000 kg)(9.81 m/s^{2})\)

F=78 480 N

so now we can make use of the power formula:

P=Fv

P=(78 480N)(6 m/s)

P=470 880W

P=0.47W

b)

In order to find the efficiency, we will suppose that the generator can generate a maximum of 0.47 W so we use the following formula:

\(efficiency = \frac{P_{in}}{P_{out}}*100\%\)

\(efficiency=\frac{0.470880}{1.2}*100\%\)

efficiency=39.24%