For each of the motions described below, determine the algebraic sign (positive, negative, or zero) of the x component and y component of velocity of the object at the time specified. For all of the motions, the positive x axis points to the right and the positive y axis points upward. A. Determine the algebraic sign of Alex's x velocity and y velocity at the instant he leaves the ground at the beginning of the jump. B. Determine the algebraic signs of Alex's x velocity and y velocity the instant before he lands at the end of the jump. C. Determine the algebraic signs of the ball's x velocity and y velocity the instant after it leaves the player's hands. D. Determine the algebraic signs of the ball's x velocity and y velocity at the ball's maximum height.

answer would be d.) i hope this

explanation:

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