John walks four kilometers east, two kilometers north as shown in the diagram below. What is John’s displacement

4 km

11 km

2 km north

7 km east

Answer:

Entonces la velocidad es 2 [tex]\frac{m}{s}[/tex] hacia la derecha, mientras que la rapidez es 2 [tex]\frac{m}{s}[/tex].

Explanation:

La rapidez es una magnitud escalar que relaciona la distancia recorrida con el tiempo mientras que la velocidad es una magnitud vectorial que relaciona el cambio de posición (o desplazamiento) con el tiempo.

Es decir, la rapidez es una magnitud física que expresa el valor numérico y la unidad de una distancia en relación con el tiempo.

Matemáticamente,  es expresada como el cociente entre el camino recorrido y el tiempo transcurrido:

[tex]rapidez=\frac{distancia}{tiempo}[/tex]

Por otro lado, la velocidad expresa cómo se está moviendo un objeto en cada momento, informando la dirección, el sentido y la rapidez del movimiento (la velocidad se refiere al intervalo de tiempo que le toma a un objeto desplazarse hacia una dirección determinada y, al involucrar la dirección o sentido del movimiento, es una magnitud vectorial).

Matemáticamente, la velocidad es calculada como el cociente entre el desplazamiento que realizó un cuerpo  y el tiempo total  que le llevó realizarlo.

[tex]velocidad=\frac{desplazamiento}{tiempo}[/tex]

En este caso, sabes que:

Reemplazando obtenes que la aceleración es:

[tex]rapidez=\frac{10m}{5 s}[/tex]

rapidez= 2 [tex]\frac{m}{s}[/tex]

y la velocidad es:

[tex]velocidad=\frac{10m}{5s}[/tex]

velocidad= 2 [tex]\frac{m}{s}[/tex] hacia la derecha.

Entonces la velocidad es 2 [tex]\frac{m}{s}[/tex] hacia la derecha, mientras que la rapidez es 2 [tex]\frac{m}{s}[/tex].

Answer:

See the explanation below.

Explanation:

This is because the vacuum chamber removes all the air contained and for this reason, there is no force that opposes the movement of the feather when falling. We must remember that the free fall equation of kinematics is not a function of the mass of an object.

[tex]v_{f} =v_{o} +g*t[/tex]

where:

Vf = final velocity [m/s]

Vo = initial velocity [m/s]

g = gravity acceleration [m/s²]

t = time [s]

As we can see the mass of the object is not included in the equation.

Answer:

Answer:

50

Explanation:

The angle of reflection is 50 because angle of incidence is equal to the angle of reflection

Answer:

It should have 6 electrons to be a neutral carbon atom

Answer:

True

Explanation:

Atoms of the same element will always have the same atomic mass or the mass listed in the periodic table.

Answer:

This question is incomplete

Explanation:

This question is incomplete because of the absence of the average velocity at which the supplies are travelling in air. The formula to be used here if the completed question is obtained is

Average velocity (in m/s) =  distance (m) ÷ time (s)

Since we are looking for the time, then time should be made the subject of the formula

time (in secs) = distance ÷ average velocity

Answer:

force meter

Explanation:

Answer:

Wrong, the correct answer is "newton"

Explanation:

1 Newton = 1 kilogram-meter per second2

Answer: south

Explanation:

At its highest position along the arc, the pendulum is at its lowest point of kinetic energy but its highest point of potential energy. As it swings to the lowest position, the potential energy is converted into kinetic energy, thus decreasing potential energy and increasing kinetic energy.

Hope this helped!

Answer:

  bust

Explanation:

At the same speed, kinetic energy is proportional to mass. The more massive object (the large bust) will have more kinetic energy.

Answer:

Bust

Explanation:

the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest.

Answer:

Habría 13,800 selecciones posibles.

Explanation:

Permutar es colocar elementos en distintas posiciones.

Se llama permutación de m elementos a cada una de las diferentes ordenaciones  que se pueden hacer con esos elementos. En otras palabras, se llama permutaciones de  m elementos en n posiciones a las distintas formas en que se pueden ordenar los m elementos ocupando únicamente las n  posiciones.

En el caso de la permutación no se repiten los elementos, ya que de repetirse o ser iguales entre si, al intercambiarlos no se genera una nueva permutación.

El número de permutaciones de n elementos elegidos k a la vez es calculado como:

[tex]P=\frac{n!}{(n-k)!}[/tex]

Como los premios son distinguibles, la permutación es usada en este caso, donde n=25 y k=3

Entonces:

[tex]P=\frac{25!}{(25-3)!}[/tex]

Resolviendo:

[tex]P=\frac{25!}{(22)!}[/tex]

Recordando que el factorial es una operación matemática que indica que se deben multiplicar todos los números enteros y positivos que hay entre el número al cual deseas calcular el factorial y el número 1, entonces se obtiene:

P= 13,800

Habría 13,800 selecciones posibles.

La selección de los alumnos se puede realizar de 2300 formas.

Teniendo en cuenta eso, tenemos 25 estudiantes graduados para ser seleccionados para tres tipos diferentes de premios, como pabellones de investigación, docencia y servicio.

Ahora;

25C3 = 25! / 3! (25 - 3)!

25C3 = 25! / 3! 22!

25C3 = 2300

La selección de los alumnos se puede realizar de 2300 formas.

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Answer:

C. The north pole of one magnet attracts the south pole of another magnet.

Explanation:

A P E X

The best explanation that compass needle points in the direction it

does is that the north pole of one magnet attracts the south pole of another magnet. Hence, option C is correct.

Anything that creates a magnetic field is considered to be a magnet. The most noteworthy characteristic of a magnet—a force that drags on other magnetic elements like iron, steel, etc.—is caused by this invisible magnetic field, which also attracts or repulses other magnets.

A piece of equipment built from a substance that has been magnetized and produces a consistent magnetic field is called a permanent magnet. A typical illustration is a fridge magnet used to keep notes on the door of the refrigerator. The term "ferromagnetic" refers to substances that can be attracted and are also powerfully drawn to a magnet.

These comprise several naturally occurring minerals, some alloys including rare-earth metals, and the elements iron, nickel, and cobalt and their alloys.

It is the property of the magnet that opposite poles attract each other, while the same poles repel each other.

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Answer:

B

Explanation:

when you put it on a smooth surface and they're both at the same level it'll determine which one is faster and which one has less Mass. hope this helps much love .

There are no smart people available at the moment, but I'll try and help you.

Do the SECOND choice on the list. Keep the forces of the push on both blocks exactly equal. The block that jumps out ahead has less mass. The block that lags behind has more mass.

Answer:

22.777777777777 m/s

Explanation:

Since 1 kilometer is 1000 meters, then 82 km is 82000 meters. Since one hour is the same as 3600 seconds, then the answer is pretty simple: 82000/3600 or 820/36. That gets you 22.77777 or 22.78. Hope this helps

Answer:

true

Explanation:

have a great day........

Given :

A farmer is pushing a 75 kg plow across a field with 700 N at an angle of 35 degrees above the ground.

The kinetic frictional force between the plow and the field is 250 N.

To Find :

The Normal Force from the ground onto the plow.

The acceleration of the plow.

Solution :

Normal force = mg + F sin Ф

= 75×10 + 700 × sin 35°

= 1151.50 N

Now,

ma = 700 cos Ф - 250

75×a = 323.4

a = 4.31 m/s²

Hence, this is the required solution.

Answer:

An example would be "The soup is boiling hot and has a temperature of 100 °C, whereas the water in the tub is just comfortably warm, with a temperature of about 38 °C. Although the water in the tub has a much lower temperature, it has greater thermal energy".

Explanation:

Thermal energy and temperature are closely related. Both reflect the kinetic energy of moving particles of matter. However, temperature is the average kinetic energy of particles of matter, whereas thermal energy is the total kinetic energy of particles of matter.

Answer:

velocity

Explanation:

plz mark brainliestʕ•ᴥ•ʔ

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the answer is 150 000 s2

The average speed of the swimmer is equal to 1 m/s.

The average speed can be defined as the total distance traveled by the object in a specific time interval. The average speed can be defined as a scalar quantity as it possesses only the magnitude and does not have any direction.

The average speed can be determined from the ratio of the total distance the object covers to the time taken to travel that distance.

The equation for average speed can be written as follows:

Average speed =  Total distance/Total time taken

Given, the distance covered by the swimmer = 50 m

The total time taken by the swimmer = 50 sec

The average speed of the train = 50/50 = 1 m/s

Therefore, the average speed of the swimmer is equal to 1 m/s.

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