Mohon pakai cara ya kakak kakak yang baik Tubuh kita mengubah energi kimia internal menjadi usaha dan panas dengan laju sekitar 100 W, yang dinamakan laju metabolistik.
a. Berapa banyak energi kimia internal yang kita pakai selama 24 jam?
b. Energi berasal dari makanan yang kita makan, biasanya diukur dalam kilo kalori, dengan 1 kkal =
4,184 kJ. Berapa kilokalori energi makanan yang harus kita makan tiap hari jika laju metobolistik kita adalah 100 W ?

b.transmitters send radio waves, and receivers capture radio waves.

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