Space probes may be separated from their launchers by exploding bolts. (they bolt away from one another.) suppose a 4800-kg satellite uses this method to separate from the 1500-kg remains of its launcher, and that 5000 j of kinetic energy is supplied to the two parts. what are their subsequent velocities using the frame of reference in which they were at rest before separation?

Explanation:

As we know that the satellite will separate from its remain by using the method of internal energy

So here we can use energy conservation and momentum conservation

so we will have

also by energy equation

now from above equations

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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