Physics, 10.06.2020 17:57 genyjoannerubiera

Si no hay luz, sí se puede formar una imagen ?

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Por supuesto, es posible que ciertas personas en la habitación no puedan ver la imagen de un objeto en un espejo plano. Debido a la posición de la persona con respecto a la posición de la imagen y a las extremidades del espejo, la persona no puede detectar un rayo de luz que se refleja en su ojo al ver la ubicación de la imagen. Esto no significa que no haya imagen. De hecho, cualquier objeto colocado frente a un espejo plano (o incluso al costado del espejo plano) tiene una imagen, independientemente de si hay personas posicionadas en un lugar apropiado para verlo. En el diagrama a continuación, hay una imagen de un objeto ubicado al otro lado del espejo. Sin embargo, Ray Zuvlite no puede ver la imagen debido a su posición en la habitación. Ray ciertamente puede ver en la dirección de la ubicación de la imagen. Sin embargo, la luz del objeto no puede reflejarse en el espejo de acuerdo con la ley de reflexión y viajar a su ojo a lo largo de su línea de visión. Como la luz del objeto no llega a su ojo, Ray no puede ver la imagen del objeto en el espejo.

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

Answer from: Quest

the maxium height is 34m/s

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