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zimovet [89]
3 years ago
8

Why is a magnetic field a vector quantity?

Physics
2 answers:
AleksandrR [38]3 years ago
4 0

A magnetic field  is a vector quantity because of directional force.

Option A

<u>Explanation</u>:

The magnetic field at any case is a vector quantity as it has both magnitude and direction. A magnetic field has a direction associated with a field as well as the strength of the field. The magnetic field is the space that the magnet creates around itself and is hence a vector quantity as it can be experienced. The S.I. unit of magnetic field is Tesla. It is to be noted that a magnetic field always contains strength.

Bingel [31]3 years ago
3 0

Answer:

answer is A

Explanation:

A vector quantity is a quantity which has both a magnitude and a direction. A field is always associated with a force, which means that the field produces a force on an object located in the field. ... Therefore, the magnetic field is a vector quantity since it is associated with a directional force

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Un adolescente que va en monopatín rueda hacia abajo sobre un plano inclinado de 18.0 m de largo. El chico parte con una rapidez
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Answer: 31.62°

Explanation:

Tenemos como datos:

Distancia = 18.0m

Velocidad inicial = 2.0 m/s

Tiempo total = 3.3s

Sabemos que para un plano inclinado (ignorando el rozamiento) la aceleración se escribe como:

a(t) = g*sen(θ)

donde θ es el ángulo del plano inclinado, y g = 9.8m/s^2

Sabemos que para la velocidad tenemos que integrar la aceleración sobre el tiempo, entonces:

v(t) = g*sen(θ)*t + v0

Donde v0 es la velocidad inicial: v0 = 2.0m/s

v(t) = 9.8m/s^2*sen(θ)*t + 2.0m/s

Y para la posición, podemos integrar de vuelta sobre el tiempo:

p(t) = 0.5*9.8m/s^2*sen(θ)*t^2 + 2.0m/s*t + p0

Donde p0 es la posición inicial, podemos considerar que es cero para este problema.

p(t) = 4.9m/s^2*sen(θ)*t^2 + 2.0m/s*t

Y usando los datos iniciales, sabemos que en 3.3 segundos se recorren 18 metros, entonces:

p(3.3s) = 18m = 4.9m/s^2*sen(θ)*(3.3s)^2 + 2.0m/s*3.3s

              18m = 51.744m*sen(θ) + 6.6m

              sen(θ) = (18m - 6.6m)/ 51.744m

                   θ = cosec( (18m - 6.6m)/ 51.744m ) = 31.62°

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Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

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