Aman fell out of an airplane and barely survived. he was moving at a speed of 100m/s just before landing in deep snow on a mountain side. experts estimated that the average net force on him was 600 n as he plowed through the snow for 10 s. what was his mass, in kg

Mass in kg will be 60 kg

Explanation:

We have given initial speed of the man u = 100 m/sec

And final speed v = 0 m/sec

Time is given, t = 10 sec

So acceleration

Force is given , F= 600 N

From Newton's law we know that F = ma

So

mass = 60 kg

So mass in kg will be 60 kg

heat the gas and measure the pressure

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