Question 1: Choose the best statement about electromagnetic waves:
*They include xrays, light, and microwaves
*They travel at the speed of light
*They are produced by accelerating electrons
*They are moving electric and magnetic fields
*All of the above
Question 2: What is true about the "tuner" in a radio receiver?
*It allows you to tune the volume of the signal
*It resonates at one particular frequency
*It is usually made from a diode
*It is part of the demodulator
*It delivers a reference "pitch" to the radio
My answers:
Question 1: all of the above
Question 2: *It delivers a reference "pitch" to the radio
please let me know if i am right thanks, i cant afford to get any more questions wrong so i just want to triple check everything
2006-09-22 04:31:28 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Your answer for Q1 is correct. However, a radio tuner resonates at a particular frequency or range of frequencies, so your answer to Q2 is wrong.
2006-09-22 04:34:56 · answer #1 · answered by DavidK93 7 · 0⤊ 0⤋
Q1 is OK Q2 it changes a variable resistor to make the circuit resonate at a particular frequency so it is (2)
2006-09-22 04:33:58 · answer #2 · answered by Chris C 2 · 0⤊ 0⤋
Q1
They travel at speed of light
Q2
It is a part of demodulator
2006-09-22 04:35:31 · answer #3 · answered by Dr M 5 · 0⤊ 0⤋
for me they are the the moving electric and magnetic Waves
the second one it resonates at a patricular frequency
2006-09-22 04:35:02 · answer #4 · answered by ashok reddy 2 · 0⤊ 0⤋
Have your teacher check them
2006-09-22 04:32:36 · answer #5 · answered by Anonymous · 0⤊ 0⤋
I leave it to your teacher
2006-09-25 04:15:15 · answer #6 · answered by Anonymous · 0⤊ 0⤋
looks right to me
2006-09-22 04:33:11 · answer #7 · answered by baldraj27 2 · 0⤊ 0⤋
you are correct
2006-09-22 04:49:29 · answer #8 · answered by Diggler AKA The Cab Driver 1 · 0⤊ 0⤋
YE I KNO
2006-09-22 04:32:42 · answer #9 · answered by monaUK 5 · 0⤊ 0⤋