An airplane traveled 300 km northeast in 2.5 hours. Find the velocity of the plane.

Answer:

b

Explanation:

because the metalloids are the thing in the middle

The force F1 is equal and opposite to the downward force thus, F1 is equal to 60 N. The force F2 is inclined to 30 ° from leftward force and it is equal to 38.97 N in magnitude.

Force is an external agent acting on a body to deform it or to change its state of motion or rest. Force is a vector quantity and it is characterised by its magnitude and direction.

If two forces acting on a body from the same directions, then the net force will be the sum of these two forces. If they are acting from opposite directions, they will cancel each other in magnitude.

The force F1 is equal and opposite to the force acting downward. Thus its magnitude is 60 N. The force F2 is inclined to 30 ° from horizontal direction.

F2 = 45 cos 30 = 38.9 N.

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The effect on K₁/K₂ on changing the quantities are :

a)If the mass of 1 is double the mass of 2, and the speeds are the same, then ratio is 2 times

b)If the speed of 1 is double the speed of 2, and the masses are the same, then ratio becomes 4 times.

c)If The mass of 2 is double the mass of 1, and the speeds are the same, then ratio becomes half.

d)If The speed of 2 is double the speed of 1, and the masses are  same, then ratio becomes 1/4 times.

e)If The speed of 1 is double the speed of 2, and the mass of 2 is double the mass of 1,then ratio becomes half.

We know that kinetic energy of any body is given by (1/2)mv² where m is the mass of the body and v is the velocity of the body.

Hence, the ratio of K₁/K₂ is changing  on  changing one or both of these parameters

a) when mass of first body is doubled then K₁ becomes 2 times of initial kinetic energy, then ratio will become twice of the initial value.

b)when speed of first object is doubled then kinetic energy of first object will becomes 4 times of initial energy ,therefore the ratio becomes 4 times of initial ratio.

c) If The mass of 2 is double the mass of 1, and the speeds are the same then in that kinetic energy of 2nd object will become twice of initial kinetic energy, therefore ratio  will become half.

d)  If The speed of 2 is double the speed of 1, and the masses are  same then ratio becomes 1/4 times of initial ratio.

e) If The speed of 1 is double the speed of 2, and the mass of 2 is double the mass of 1, then in that case ratio becomes half of initial ratio,

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(Complete question) is:

Kinetic energy depends on both the mass of an object and on its speed.  Ki the kinetic energy. Using the ratio K₁/K₂ to see how changing one or both of these parameters changes the kinetic energy. Match each case with the correct value of ratio K₁/K₂. 1) The mass of 1 is double the mass of 2, and the speeds are the same.2) The speed of 1 is double the speed of 2, and the masses are the same.  3) The mass of 2 is double the mass of 1, and the speeds are the same. 4) The speed of 2 is double the speed of 1, and the masses are the same. 5) The speed of 1 is double the speed of 2, and the mass of 2 is double the mass of 1.

There are no specific number as scientist can just go around counting all the atoms plus they always find more but an estimated number is 100000000000000000000000000000000000000000000000000000000000000000000000000000000 = 10^80

Answer:

A: It decreased trade because soldiers no longer protected the oases.

I took it on E2020. I hope I've helped. If you need further explanation, please comment below.  

Answer:

Yes it is A

It decreased trade because soldiers no longer protected the oases.

Explanation:

From the question, we can see that the momentum is a vector thus the change in the momentum with respect to the ground observer ought to be zero.

The term momentum has to do with the  product of the mass and the velocity of a body. Let us recall that the momentum of a body is a vector quantity thus we have to consider the magnitude as well as the direction of the vector.

With this said, we are going to consider the question more critically. We are told that; a  ball travels along a straight path, perpendicular to a wall. The ball bounces off the wall and returns with the same magnitude of momentum, p, with respect to a ground observer at rest.

Looking at the fact that the momentum of the body is a vector and we have seen told that the ball bounces off the wall and returns with the same magnitude of momentum the  it follows that the change in the momentum is zero.

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Missing parts;

A ball travels along a straight path, perpendicular to a wall. The ball bounces off the wall and returns with the same magnitude of momentum, p, with respect to a ground observer at rest. What expression shows the change in momentum as observed by the ground observer?

a. 0

b 0.5p

c 2p

d 1.5p

An average velocity can be defined as the total distance covered by a physical object divided by the total time taken.

Mathematically, you can find average velocity (Vaverage) from acceleration (a) and time (t) by using this formula:

Average velocity = acceleration × time

Vaverage = at     .......equation A.

Also, you can find distance (d) from average velocity (Vaverage) and time (t) by using this formula:

Distance = average velocity × time

d = vt        .......equation B.

Now, putting the two equations together and substituting the Vaverage term in equation B:

d = (at) × t

d = at²

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Complete Question:

A. How do you find average velocity (Vaverage) from acceleration (a) and time (t)?

B. How do you find distance (d) from average velocity (Vaverage) and time (t)?

C. Now put the two equations together. Substitute your result in equation A for the (Vaverage) term in equation B. Your final equation should only have d, a, and t terms.

Cascades and Andes mountains are examples of where one ocean plate subducts beneath another plate. This is known as a convergent boundary where two plates move towards each other.

Phenomenon is that oceanic plates are denser than continental plates, so when they meet, the oceanic plate is forced down into the mantle and melts due to the high pressure and temperature. The melted material then rises to the surface and forms volcanoes, which is what has created the Cascades and Andes mountains.

The Cascades and Andes mountains are formed as a result of the process called subduction. In this process, a denser oceanic plate is forced under a lighter continental plate, creating a subduction zone. This leads to the formation of volcanic arcs and mountain ranges along the boundaries of the converging plates.
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Answer:

See below

Explanation:

Since it is non-uniform acceleration ( it varies with time as given)

The integral of acceleration is velocity

so integrate between 0 and three   15 m/s^2 t

    =   1/2  ( 15 t^2 )   + k      between 0 and 3    ( k is a constant we will ignore)

            = 67.5   - 0     =   67.5 m/s   velocity

the integral of velocity is displacement

 1/2 (15t^2 )   integrated becomes     1/6 15 t^3    from 0 to 3  ( ignoring a constant again)

                                      1/6 * 15 * (3^3 ) = 67.5 meters displacement

THANX for those who noted my errors in my first posted response !!

Answer:

solar wind

radio wave plux

solar flares

coronal mass ejections

coronal heating

Hard glass is a type of glass characterized by its high resistance to thermal and mechanical stress. It is commonly used in scientific and industrial applications. The components of glass can be classified into formers, intermediates, and modifiers.

Hard glass, also known as borosilicate glass, is a type of glass that possesses high resistance to thermal expansion and mechanical stress. It is composed mainly of silica (SiO2) and boron oxide (B2O3), which act as formers in the glass structure. The formers provide the basic framework of the glass and contribute to its high durability and thermal stability.

In addition to formers, glass can also contain intermediates and modifiers. Intermediates, such as alumina (Al2O3) and magnesia (MgO), help in reducing the melting point of the glass and improve its workability during the manufacturing process. Modifiers, such as sodium oxide (Na2O) and calcium oxide (CaO), alter the properties of the glass, such as its refractive index and chemical resistance.

By combining the right proportions of these components, glassmakers can produce glass with specific characteristics suitable for various applications, ranging from laboratory equipment and optical lenses to household items and industrial containers.

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The height of each bob rebound is 0.66m.

Height is the measurement of someone or something.

The velocity with which the 75g bob collides with the 95g bob is u = sqrt(2gl) = 4.12m/s Now th given collsion is headon and elastic therefore the  energy and linear momentum of both will be conserves and from the law of conservationists of linear momentum and laws of conservationists of energy we get for lighter (75g) bob

v1 = (m_1 -m_2 \over m_1 +m_2 )u_1 +( 2m_2 \over m_1 +m_2 )u_2

= 0.075-0.095

\over 0.075+ 0.095 ×4.12 + 0

= -0.485 m/s ( -ve sign shows that the bob will move in opp. dir. to its initial dir.)

and v2 = (m_2 -m_1 \over m_1 +m_2 )u_2 +( 2m_1 \over m_1 +m_2 )u_1 = 0 + 2×0.075 \over 0.075+ 0.095 × 4.12 = 3.63 m/s

as at max hieght both the bob will come to rest for a moment then applying v2 - u2 = 2as we get for bob of 95g 0 - 13.21 = -2×10h or h = 13.21/20 = 0.66m for bob height.

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Answer:

A

Explanation:

The nurse should administer approximately 1.075 ml of atropine subcutaneously (SC) based on the physician's order and the concentration of the vial.

To calculate the amount of atropine to be administered, we first need to convert the physician's order from grains (gr) to milligrams (mg).

1/150 gr can be converted to milligrams by multiplying it by the conversion factor of 64.79891. Thus, 1/150 gr is approximately 0.43 mg.

The atropine vial is labeled as 0.4 mg/ml, which means there is 0.4 mg of atropine in 1 ml of solution.

To determine the volume to be administered, we divide the required dose (0.43 mg) by the concentration of the vial (0.4 mg/ml):

0.43 mg / 0.4 mg/ml = 1.075 ml

Therefore, the nurse should administer approximately 1.075 ml of atropine subcutaneously (SC) based on the physician's order and the concentration of the vial.

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Answer:

the law states that unbalanced forces cause objects to accelerate with an acceleration that is directly proportional to the net force and inversely proportional to the mass.

Explanation:

Answer: 24.39 N

Explanation:

Given

Torque required to open the lid is \(\tau =2\ N.m\)

diameter of lid \(d=8.2\ cm\)

Force exerted by fingers and thumb forms a couple. So, torque can be written as

\(\Rightarrow \tau= F\times 2r\\\Rightarrow 2=F\times 8.2\times 10^{-2}\\\\\Rightarrow F=\dfrac{200}{8.2}\\\\\Rightarrow F=24.39\ N\)

Thus, the magnitue of each force is 24.39 N

The magnitude of net force which is required to accelerate the ball is 240 Newtons.

The net force is the vector sum of all the forces which are acting on a particle or an object. The net force is a single force which replaces the effect of the original forces which are acting on the particle's motion.

F = m × a

where, F = net force,

m = mass of the object,

a = acceleration of the object

F = 0.3 × 800

F = 240N

Therefore, the net force which is required to accelerate the ball is 240 Newtons.

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Answer:

52×75 is the answer of what you asked.

Answer:

 oil floats in water due to the fact that it is less dense. since the water is more dense, it is basically heavier, and heavier items always sink, while lighter items float, the same can be said about liquids. denser liquids will sink while less dense items will float.

It is a 2:1 ratio of ey, final, the maximum value of the y-component of the electric field immediately following the last polarizer, to eo, the amplitude of the electric field oscillations in the incident polarized beam.

What is a ratio?

A ratio is the divisional comparison of two numbers.

We may find the ratio by dividing the second output by the first output, which corresponds to the first two outputs, or -1/8 and -1/4:

-1/4-1/8

We multiply by the reciprocal when dividing fractions:

-1/4x-8/1

When multiplying fractions, multiply across the board:

(-1x-8)/(4x1) 8/4=2

A ratio is a comparison of two or more numbers in mathematics that shows how big one is in comparison to the other. A ratio divides two amounts into equal parts, with the dividend or antecedent serving as the unit of comparison and the divisor or unit of comparison serving as the unit of comparison.

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102.6 nm wavelength represents the maximum energy transition. Other wavelengths emitted will depend on the specific atomic energy levels of the element in question.

Hi! To determine the wavelengths of light emitted when atoms return to the ground state, you'll need to use the formula E = hc/λ, where E is the excitation energy, h is Planck's constant (6.63 × 10⁻³⁴ J·s), c is the speed of light (3 × 10⁸ m/s), and λ is the wavelength.

With a maximum excitation energy of 12.09 eV (1 eV = 1.6 × 10⁻¹⁹ J), first convert it to joules: E = 12.09 eV × 1.6 × 10⁻¹⁹ J/eV = 1.9344 × 10⁻¹⁸ J. Next, rearrange the formula to solve for λ: λ = hc/E.

Plug in the values: λ = (6.63 × 10⁻³⁴ J·s × 3 × 10⁸ m/s) / (1.9344 × 10⁻¹⁸ J) = 1.026 × 10⁻⁷ m or 102.6 nm. This wavelength represents the maximum energy transition. Other wavelengths emitted will depend on the specific atomic energy levels of the element in question.

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The acceleration of the elevator at this time was 2m/s² and the elevator was accelerating the upward direction.

The mass of the child standing on a spring scale in an elevator is 30 kg the elevator is showing a reading of 360 Newtons.

The reading note by the elevator is given by radiation,

W = M(g+a)

Where w is the reading of the spring scale,

M is the mass of the child,

g is the gravitational acceleration which is given to be 10m/s² and a is the acceleration of the elevator.

Putting values,

360 = 30(10+a)

12 = 10+a

a = 2m/s²

As you can see from the above result that the acceleration of the lift is 2m/s² and because it is positive it means that the elevator is accelerating in the upward direction.

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TNT has a heat of combustion of -3406 kJ/mol compared to sugar's -5639 kJ/mol.

what is heat of combustion?

The quantity of heat released when a specific amount of a substance undergoes burning is known as the heat of combustion, also known as the calorific value or the energy value. In most cases, the terms "heat of combustion" and "calorific value" are interchangeable. Calorific value is the term used to describe the total amount of energy released during the complete combustion of a given mass of a substance in the presence of (an adequate amount of) oxygen under typical conditions of pressure and temperature.

TNT has a heat of combustion of -3406 kJ/mol compared to sugar's -5639 kJ/mol.

TNT is an explosive because it explodes more quickly due to its lower heat of combustion. Sugar is not explosive and will take a lot longer to heat up or burn.

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Answer: some may argue that while teacher’s only provide service to a single classroom, superstar athletes are entertaining fans all around the world, enticing people with a feeling of relaxation and excitement. Obviously, what these individuals must not be aware of is the most important man in our nation, the president, who makes critical decisions that affect the entire world every day, only makes $400,000 a year. While President Obama is hard at work reviving the economy, the unproven rookie in the MLB is earning way over that figure. Furthermore, police officers, firefighters, and doctors save lives while risking their own for a fraction of what sports stars make. People in the military leave their families at home to defend and protect the country knowing they may never return. It's truly a pity that none of these true heroes are given the same recognition by society as athletes such as Brett Favre or Michael Jordan are given. While I do understand that making it into the pros is not an easy thing to do, and that it takes a tremendous number of hours of hard work and dedication every day to earn a job in professional sports, these people do nothing more than entertain the general public.

Explanation:

Answer:

Wouldn't it be great to make nearly $111 million a year simply to play a game? Tiger Woods, along with many other professional athletes, certainly think so. But do these athletes really deserve all that money?

In my mind, absolutely not. Professional athletes are making too much money in a society where salaries and wages are traditionally based on the value of one's work. In today's society, one should be paid according to the job’s economic importance and their value to society.

Teaching is one of the most economically important occupations because our future economy relies on the education of its youth, yet teachers are paid astronomically less than the average professional athlete is. In fact, each basket Kobe Bryant scores earns him equivalent to the average classroom teacher’s yearly salary.

However, some may argue that while teacher’s only provide service to a single classroom, superstar athletes are entertaining fans all around the world, enticing people with a feeling of relaxation and excitement.

Obviously, what these individuals must not be aware of is the most important man in our nation, the president, who makes critical decisions that affect the entire world every day, only makes $400,000 a year. While President Obama is hard at work reviving the economy, the unproven rookie in the MLB is earning way over that figure.

Furthermore, police officers, firefighters, and doctors save lives while risking their own for a fraction of what sports stars make. People in the military leave their families at home to defend and protect the country knowing they may never return. It's truly a pity that none of these true heroes are given the same recognition by society as athletes such as Brett Favre or Michael Jordan are given.

While I do understand that making it into the pros is not an easy thing to do, and that it takes a tremendous number of hours of hard work and dedication every day to earn a job in professional sports, these people do nothing more than entertain the general public.

Moreover, in my mind, if these athletes want to continue to be rewarded with the fame and fortune that is unfairly bestowed upon them, they must prove to the world that they are going to be positive role models for future athletes, and those who admire them.

Explanation:

found if off some website lol hope it helps! <3

Answer:

1000m=1km

simple :) . . .

the magnitude and direction of the initial acceleration of an electron moving with velocity 2.88 x 105 m/s into the page at point P is 6.1 x 10^18 m/s²,

Given: Velocity (v) = 2.88 x 10^5 m/s.

The initial acceleration is unknown but needs to be determined.

The magnitude and direction of the initial acceleration can be determined using the right-hand rule. The right-hand rule states that if the fingers of the right hand are curled in the direction of the magnetic field lines, the thumb indicates the direction of the force on a positive charge. The force on a negative charge is in the opposite direction to that on a positive charge. This is known as the Fleming's left-hand rule.A negative charge moves in the direction opposite to the magnetic field lines. Therefore, the initial acceleration of an electron moving with a velocity of 2.88 x 10^5 m/s into the page at point P is given as:Initial acceleration = F/mWhere F is the force and m is the mass of the electron.Since the electron is moving into the page and the magnetic field is perpendicular to the page, the force acting on the electron will be perpendicular to both the velocity and magnetic field direction.Therefore, the direction of the initial acceleration of the electron will be perpendicular to the velocity and magnetic field direction.Using the right-hand rule, we can determine the direction of the force acting on the electron. The thumb of the right hand points in the direction of the force acting on a positive charge. Since an electron is negatively charged, the direction of the force acting on the electron will be opposite to the direction of the thumb of the right hand.The direction of the force acting on the electron is out of the page. Therefore, the direction of the initial acceleration of the electron is out of the page.The magnitude of the initial acceleration is given by:Initial acceleration = F/m = qvB/mwhere q is the charge on the electron, B is the magnetic field, and m is the mass of the electron.The direction of the force acting on the electron is perpendicular to both the velocity and magnetic field direction. Therefore, the angle between the velocity and magnetic field is 90°.Hence, sin(90°) = 1.

Therefore, the magnitude of the initial acceleration is given as:Initial acceleration = F/m = qvB/m = qvB/m x 1 = (1.6 x 10^-19 C) x (2.88 x 10^5 m/s) x (1.2 T) / (9.11 x 10^-31 kg)= 6.1 x 10^18 m/s² (approx.)

Therefore, the magnitude of the initial acceleration of an electron moving with a velocity of 2.88 x 10^5 m/s into the page at point P is 6.1 x 10^18 m/s², and its direction is out of the page.

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Answer:

216.32kN

Explanation:

Force can be expressed according to the formula;

Force = mass ×acceleration

Given

Mass = 1250kg

Velocity = 4.16m/s

Distance = 0.05m

We can get the acceleration first using the equation of motion

v² = u²+2as

4.16² = 0²+2a(0.05)

17.3056 = 0.1a

a = 17.3056/0.1

a = 173.056m/s²

Get the force required

Force = 1250×173.056

Force = 216,320N

Force = 216.32kN

Hence the force constant of the material is 216.32kN

Answer:

Explained below.

Explanation:

Conductors can be defined as materials that permit electricity to flow through them easily.

Now, metals have a molecular structure that makes them good conductors because electrons in the atoms of these conductors tend to move freely from one atom to the other. So a majority of metals make good conductors because these metals tend to hold their electrons loosely. In short, it can help engineers make powerful batteries because then it means that they are capable of giving much more electrical energy since nowadays, advanced batteries make use of ion charges for the batteries.

Answer:

in the thick part of the scissors ✂️

Explanation:

because in physics simple machine called wedge the force applied in this thick area it have thine side used to split or piece objects