(10 points) A 100g steel ball and a 200g steel ball each hang from 2.0 m long strings. At rest, the balls hang side by side, barely touching. The 100g ball is pulled to the left until the angle between its string and the vertical is 55 degrees. The 200g ball is pulled to a 55 degree angle in the opposite direction, to the right. The balls are then released, collide at the bottom, and then rebound upwards. Assuming the coefficient of restitution of the collision is 0.7, find the height each ball rises after the collision.

less than one you can't create energy

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

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle