Una bala de cañón se dispara horizontalmente con una velocidad de 120m/s, desde lo alto de un acantilado de 250m de altura, sobre el nivel de un lago, tal como se muestra en la figura.
me podrian ayudar es que no entiendo con procedimiento plis

a) Que tiempo tarda la bala en caer al agua

b) Cuál será la distancia horizontal que alcanza la bala

c) Que distancia horizontal ha alcanzado la bala al cabo de 5s.

d) Que distancia ha descendido la bala al cabo de 5s.

e) Respecto del punto de lanzamiento, que coordenadas tendrá la bala, después de 5s.

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

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