You are approaching an intersection where you want to make a turn, and you have a green light. You should
A: Wait until you are in the intersection before slowing down to a safe turning speed.
B: Make the turn without slowing down.
C. Slow down to a safe turning speed pefore entering the intersection.

change tension

no

sodium is solid at rt

we need to know the time interval during which the force acts. impulse of force = momentum change

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