A plane that is 2000m in the air of the potential energy of the plane is 86000 J what is the mass of the plane

Answer:

1.08 x 10⁷N

Explanation:

Given parameters:

Mass of freight train  = 270700kg

Acceleration = 40m/s²

Unknown:

Force acting on the train = ?

Solution:

From Newton's second law of motion, we know that:

       Force  = mass x acceleration

So;

        Force  = 270700 x 40   = 1.08 x 10⁷N

Answer:

When you put un-like poles together (South facing North) you can feel magnetic attraction. In the Northern Hemisphere, your compass needle points North, but if you think about it for a moment, you will discover that the magnetic pole in the Earth's Northern Hemisphere has to be a South polarity.

Answer:

c i hope this helps

Explanation:

According to the research, the correct option is A. A psychologist whose goal is to explain a behavior will record descriptions as objectively as possible.

It is a professional who diagnoses and is responsible for collecting facts about the behaviors and experiences of living beings, organizing them in a systematic way and developing theories for their understanding.

This means that psychologists analyze the behavior of living beings from a scientific approach and these studies allow us to explain their behavior.

Therefore, we can conclude that according to the research, the correct option is A. A psychologist whose goal is to explain a behavior will record descriptions as objectively as possible.

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Answer:

The answer is the fourth option

Explanation:

For everyone on edg3, it is D) suggest why a behavior occurs.

Answer:

C

Explanation:

Answer:

Explanation:

Load ( L ) = 800 N

Effort ( E ) = 200 N

Load distance ( LD ) = 10 cm

Effort distance ( ED ) = ?

now, Let's find the effort distance:

\( \mathsf{L \times LD = E \times ED}\)

Plug the values

\( \mathsf{800 \times 10 = 200 \times ED}\)

Multiply the numbers

\( \mathsf{8000 = 200 \: ED}\)

Swipe the sides of the equation

\( \mathsf{200 \: ED = 8000}\)

Divide both sides of the equation by 200

\( \mathsf{ \frac{200 \: ED }{200} = \frac{8000}{200} }\)

Calculate

\( \mathsf{ED \: = \: 40 \: cm}\)

Hope I helped!

Best regards!

Answer: A standard 9V battery has about 400-600 mAh capacity. In the most basic terms, these batteries can supply about 500 milliamps for one hour before being "dead". With electricity, we measure the amount of charge flowing through the circuit over a period of time. Current is measured in Amperes (usually just referred to as "Amps"). An ampere is defined as 6.241*10^18 electrons (1 Coulomb) per second passing through a point in a circuit. In a series circuit, amperage, or amplitude, of the current remains constant and can be calculated using Ohm's law V = I/R while the voltage drops across each resistor that can be summed up to get the total resistance.

Hope this helps........ Stay safe and have a Merry Christmas!!!!!!!! :D

Answer:

His legs, rocket sled

Explanation:

Self-explanatory!

A string with a linear density of 3.00 g/m and a string with a linear density of 5.00 g/m has a mass M1 of 188 g and a mass M2 of 313 g. The dangling block with mass M = 500 g is pulling them tight.

A physical body's mass is its total amount of matter. Inertia, or the body's resistance to acceleration (change of velocity) when a net force is applied, is also measured by this property. The gravitational pull an object has on other bodies is also influenced by its mass. A substance's density, or more specifically, its volumetric mass density, is defined as its mass per unit volume. The most popular representation of density is (the lower case Greek letter rho ).

Mg/2 determines the tension of each string. Thus,

V1 = ((500)(9.80)/2*(3.00)) represents the wave speed in string 1. ^1/2 = 28.6 m/s

And V2 = ((500)(9.80)/2*(5.00)) is the wave speed in string 2.

1/2 = 22.1 m/s

M1 = (M/1 + m1/ m2) = 500/(1 + 5) = 188g M2 = M-M1 = (500 - 187.5) = 313g

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Answer:

To calculate the magnification of the image formed by a magnifying glass, we can use the formula:

Magnification (M) = Image height (h_i) / Object height (h_o)

However, since the question does not provide information about the heights of the object and the image, we cannot directly calculate the magnification using the given values.

To determine the magnification, we need either the height of the object or the height of the image in order to compare them. Without this information, it is not possible to calculate the magnification accurately.

Explanation:

I got you

Explanation:

normal force = 400 g cos 35

friction force up slope = .6 (400 g) cos 35

weight component down slope = 400 g sin 35

400 a = 400 g sin 35 - .6 (400 g cos 35)

a = g (sin 35 - .6 cos 35) = .082 g

I hope this helps you

The acceleration of the block is 0.082g.

The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.

Given that:

Mass of the slab: m = 400 kg.

Angle of inclination: θ = 35°.

Coefficient of kinetic friction: μ  = 0.60

Hence, the normal force = 400 g cos 35° N.

The friction force acting on the slab= 0.6× (400 g) ×cos 35° N.

The component of weight in the direction of motion= 400 g sin 35° N.

Let the acceleration of the slab = a.

Now from Newton's 2nd law of motion:

Σ F = ma

400 g sin 35° - 0.6 (400 g cos 35°) = 400 a

a = g (sin 35 - .6 cos 35)

= 0.082 g

Hence, the acceleration of the block is 0.082g.

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Answer:

Radio Waves

Explanation:

The multiplier and the liquidity trap are concepts in economics that relate to the relationship between changes in aggregate demand and the overall level of economic activity.

The multiplier refers to the idea that an initial change in spending, investment, or government expenditure can have a magnified effect on the economy's output.

When there is an increase in spending, for example, households or businesses that receive the additional income will in turn spend some of it, creating a ripple effect of increased demand.

This increase in demand leads to increased production and employment, resulting in further income and spending. The multiplier effect stems from the fact that each round of spending generates additional rounds of spending, amplifying the initial impact on the economy.

On the other hand, the liquidity trap refers to a situation in which monetary policy becomes ineffective in stimulating the economy. It occurs when interest rates are extremely low, close to zero, and individuals and businesses prefer to hold on to cash rather than invest or spend.

In a liquidity trap, people are unwilling to borrow or invest because they expect further deflation or economic instability. Consequently, the central bank's attempts to stimulate the economy through lowering interest rates or increasing the money supply have limited impact since they cannot further incentivize borrowing and spending.

The liquidity trap can be problematic because it hinders the effectiveness of conventional monetary policy tools and limits the ability of the central bank to stimulate economic activity. In such situations, unconventional policies like quantitative easing or fiscal stimulus may be necessary to boost aggregate demand and overcome the liquidity trap.

Overall, the multiplier highlights the potential for a positive feedback loop in the economy, while the liquidity trap demonstrates the challenges faced when monetary policy loses its effectiveness.

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When calculating a coloured solution's concentration, the wavelength of maximum absorbance is chosen since at this wavelength, even a small change in concentration can result in a noticeable change in light absorption.

The maximum absorbance wavelength is determined. Introduction: The reason coloured solutions are coloured is because they selectively absorb some light wavelengths while allowing other wavelengths to pass through. The light wavelengths that are not absorbed are what we, as observers, see.

The absorbance between 400 and 650 nm, often at intervals of 25 nm, is measured in order to establish the wavelength of maximum absorption. To identify the wavelength of greatest absorption, the data can be reviewed or graphed.

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Answer:

Read the information down below. Hope it helps :)

Explanation:

3) C. When gasoline burns in a car engine, some of the chemical energy in the gasoline is converted into heat, then the heat is converted into mechanical energy, and finally mechanical energy moves the car.

4) A. Chemical energy is energy released when a substance undergoes a chemical reaction.

5) D. Radiant energy includes visible light, x-rays, gamma rays, and radio waves.

6) 1. Chemical energy. A battery stores chemical energy and converts it to electrical energy.

   2. Potential energy is stored energy and the energy of position.

   3. Kinetic energy is the energy of motion.

   7. A battery is a device that stores chemical energy and converts it to    

      electrical energy.

   8. Potential energy is stored energy and the energy of position.

   9. Kinetic energy is the energy of motion.

The correct answer is 3).The correct option is C). 4) The correct option is A).

5). The correct option is D).  6). The correct option is A). 7) The correct option is A).

3). A moving car releases Kinetic and Potential energy both of which comes under the category of  Mechanical energy.

4). Explosions releases heat which is produced due to chemical reaction during explosion, Explosions' releases Chemical energy

5) X-ray are electromagnetic radiations, They are released when electron losses it's speed.

6) A battery in the phone can be considered as an example of Potential energy as charging occurs due to change in potential difference.

7) A battery in it's package is an example of potential energy.

The correct options are 3).B, 4).A, 5).D, 6).A 7)A.

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Answer:

The thrown football has Potential or stored Energy, PE, by virtue of its position in the air and the ability for it to fall by itself. The thrown football also has Kinetic Energy, KE, given that the ball is in motion and requires an equal and opposite amount of energy to stop it. Both the PE and the KE  are forms of Mechanical Energy, ME and the Mechanical Energy of the football is equal to the sum of its Potential and Kinetic Energy. That is ME = PE + KE

Explanation:

Potential energy, PE, is the energy that is the held or stored energy of a body such that the body is able to do work without the addition of energy from an external source

A thrown football that has an elevation or height above the floor level has the capacity to come back down and bounce on the floor without the presence of assistance at the topmost height of the football. Therefore, the thrown football has potential energy, given to it by the thrower

Kinetic Energy, KE, is the energy possessed by a moving that comes from the motion of the object

Given that the thrown football is in motion, it posses kinetic energy

Therefore, the thrown football possesses both potential energy and kinetic energy which are forms of mechanical energy ME

The combined energy of the football is therefore called the Mechanical Energy ME of the ball which is the sum of the potential and kinetic energies of the football, given as follows;

The Mechanical Energy of the football = The Potential Energy of the football + The Kinetic Energy of the football

∴ ME = PE + KE

Explanation:

ANSWER

g

m

=

R

2

GM

1.4=

R

2

(6.667×10

−11

)(7.34×10

22

)

R=

1.4

6.667×10

−11

(7.34×10

22

)

=

34.95×10

11

=1.87×10

6

m

HOPE IT'S HELP AND PLZ FOLLOW ME

Answer

As the angle of incidence increases in Figure 2.8, a point is finally reached where the refracted ray does not emerge at the second layer but lie along the interface. This particular angle of incidence at which the angle of refraction is 90° and the refracted ray lies along the interface is known as the critical angle. At and beyond the critical angle, there is no transmitted ray and therefore a very high reflected ray will be recorded .

Therefore,

sinθisin90=Vp1Vp2

But, sin 90 = 1.

At critical angle,

sinθcritical=Vp1Vp2

A critical refracted wave travels along the interface between layers and is refracted back into the upper layer at the critical angle. The waves refracted back into the upper layer are called head waves or first-break refractions because at certain distances from a source, they are the first arriving energy. Recorded first-break refraction is shown in Figure 2.10.

Note that these first-break refractions can give us important information about the shallow velocities on land seismic data.

Note also that seismic data are acquired in such a way that reflections from horizons of interest are in the pre-critical region, even at the farthest offset in the data.

In reality, part of the seismic energy arriving at an interface is transmitted and refracted, and another part of the energy is reflected at that same interface. Given that there are many reflectors in the subsurface, there will be many paths from source to receiver, each of them with a different travel time. The proportion of energy reflected depends on the material properties of the two bounding layers and on the angle of incidence

The half-life of the radioactive element is approximately 254.87 days. (b) It will take approximately 123.37 days for a sample of 100mg to decay to 65mg.

To determine the half-life of the radioactive element, we can use the fact that the radioactivity decreases by 72 percent in 840 days. By using the formula for radioactive decay and solving the equation, we find that the half-life is approximately 254.87 days. This means that in 254.87 days, the radioactivity of the element will decrease to half of its initial value.

To calculate how long it will take for a sample of 100mg to decay to 65mg, we again use the radioactive decay formula. Substituting the values into the equation, we find that it will take approximately 123.37 days for the sample to decay to 65mg. This calculation takes into account the decay rate of the radioactive element and allows us to determine the time needed for the sample to reach a specific amount.

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Answer: 25.90 m/sec

Explanation:

Speed = Distance / Time

Speed = 1010 / 39

Speed = 25.90 m/s

Answer:

162 should be the answer because 18x3x3=162.

The following which is true, according to newton’s laws of motion with friction being ignored is that none of the above is true, according to the third law and is therefore denoted as option E.

This law was coined by Isaac Newton and it states that for every action (force) in nature there is an equal and opposite reaction.

A semitrailer truck crashing all the way through a wall and since the wall collapses, the wall sustains a greater force than the truck does which doesn't depict the third law of motion as the force are meant to be equal.

They pushing off against each other and fly apart and Sam flying off with the greater acceleration also disobeys the third law due to the action and reaction not being equal.

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The options are:

A. A sports utility vehicle (SUV) hits a stationary motorcycle. Since it is stationary, the motorcycle sustains a greater force than the SUV does.

B. A semitrailer truck crashes all the way through a wall. Since the wall collapses, the wall sustains a greater force than the truck does.

C. Sam (18 years old) and his sister (9 years old) go ice skating. They push off against each other and fly apart. Sam flies off with the greater acceleration.

D. Two astronauts on a space walk are throwing a ball back and forth between each other. In this game of catch the distance between them remains constant.

E. None of the above is true, according to the third law.

Answer:

a =  v^2 / R =  ω^2 R        centripetal acceleration

.4 g = .4 * 9.80 m/s^2 = 3.92 m/s^2

R = a / ω^2 = 3.92 / .66^2 =  9.0 m

D = 2 R = 2 * 9.0 = 18.0 m      diameter

The times and distances are represented by the function are

The distance is the length of path travelled by a body when moving with some speed and taking time t.

Given function is

D (t) = 300t +125 for 0≤t<2.5

D (t) = 875  for 2.5 ≤t≤3.5

D(t)= 75t +612.5 for 3.5<t≤6

According to the given function, for 2 hours, the traveler will travel from home,

D (2) = 300x2 +125 = 725 miles.

For time between 2.5 to 3.5 hr, the distance is constant i.e. 875 miles.

For total time 6hr, the distance travelled will be

D(6) = 75 x 6 +612.5 = 1062.5 miles.

Thus, the correct options are picked up.

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Answer:

B, D, E

Explanation:

got it right on edge

Therefore, the coin falls behind the passenger, indicating that the train is moving forward. In summary, the motion of the train is forward.

The motion of the train can be determined by considering the behavior of the coin. Since the coin falls behind the passenger, it implies that the train is moving forward. This can be explained by the concept of inertia. When the coin is tossed vertically, it also has a forward velocity due to the train's motion. As the coin is in the air, it maintains its forward velocity. However, since the passenger is also moving forward with the train, they perceive the coin's motion as being straight down. Therefore, the coin falls behind the passenger, indicating that the train is moving forward. In summary, the motion of the train is forward.

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1) Length: 44 blocks

2) Relocation: 10.2 blocks to the north of the east

Since each segment travelled a certain amount of distance, the total distance is:

distance equals 18 + 10 + 16 blocks.

The total distance travelled is larger than the displacement between those two places if an item changes direction while travelling.

The displacement is only the difference between the locations of the two markers and is unrelated to the route used to get there. The entire length of the path between the two markings, however, is the distance travelled.

The distance is always greater than the object's displacement and can never be 0 or negative.

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The temperature of the water after 30g of steam has condensed will be approximately 52.14°C.

To solve this problem, we need to consider the energy transfer that occurs when steam condenses into water. The energy released by the condensing steam will be absorbed by the water, resulting in a temperature change.First, let's calculate the energy released when 30g of steam condenses. The specific latent heat of steam is given as 2.26 × 10^6 J/kg, so the energy released by 30g of steam can be calculated as:

Energy released = (30g) × (2.26 × 10^6 J/kg) = 6.78 × 10^7 J

Next, we need to calculate the energy required to raise the temperature of the water from 20°C to the final temperature. The specific heat capacity of water is given as 4200 J/kgK, and the mass of the water is 500g. Therefore, the energy required can be calculated as:

Energy required = (500g) × (4200 J/kgK) × (final temperature - 20°C)

Since the energy released by the steam is equal to the energy required by the water, we can set up the equation:

6.78 × 10^7 J = (500g) × (4200 J/kgK) × (final temperature - 20°C)

Now, we can solve for the final temperature:

(final temperature - 20°C) = (6.78 × 10^7 J) / ((500g) × (4200 J/kgK))

(final temperature - 20°C) = 32.14°C

final temperature = 32.14°C + 20°C

final temperature ≈ 52.14°C

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Answer:

Rutherford's experiment

Explanation:

Rutherford's experiment prompted a change in the atomic model. If the positive alpha particles mostly passed through the foil, but some bounced back. AND if they already knew that the electron was small and negative, then the atom must have a small positive nucleus with the electrons around them.

Answer:

To find the resulting change in momentum of the system, we need to calculate the momentum of the system before and after the external force is exerted, and then find the difference.

The momentum of a system of particles is the product of the total mass of the system and the velocity of its center of mass. From the graph, we can see that the velocity of the center of mass at t = 2.0 s is approximately 0.8 m/s.

Before the external force is exerted, the momentum of the system is:

p1 = m*v1 = 6.0 kg * 0.8 m/s = 4.8 kg m/s

After the external force is exerted, the velocity of the center of mass changes, and we can estimate it from the graph to be approximately -0.4 m/s at t = 2.0 s + Δt, where Δt is a very short time interval. The momentum of the system after the external force is exerted is:

p2 = m*v2 = 6.0 kg * (-0.4 m/s) = -2.4 kg m/s

The resulting change in momentum of the system is:

Δp = p2 - p1 = (-2.4 kg m/s) - (4.8 kg m/s) = -7.2 kg m/s

Therefore, the resulting change in momentum of the system is -7.2 kg m/s.