Английский prof.
151
3 курс
📅 22 мая 2020
👀 22
1
Radio waves have different ……… .2
Tuning a radio receiver you …………… .3
The waves are detected by. …………… .4
Radio broadcasting is the method of transmitting electromagnetic waves through ………….5
The waves can travel ………….6
FM discriminator responds to ………….7
Doorways allow only ………….8
Unwanted signals fall through ………….9
Transistors are made of ………….10
The vacuum tube amplified ……… …… during the fi rst half of the 20th century,11
With digital video we are able to take two of our senses………………..12
Latency in networking is …………..it takes a packet to travel from source to destination.13
A Charged Coupled Device performs…………………14
What is radioactivity?15
What are the 2 reasons an isotope will undergo radioactive decay?16
What is nuclear radiation?17
Name each of the three types of radioactive decay and what it takes to stop them:18
What 2 quantities are condensed in nuclear decay?19
What is radioactive half-life?20
What is the name of the force that holds the nucleus of an atom together?