Answer: B
Explanation:
Your'e asking about how waves get closer and louder A it isn't moving so no, C it's not saying if it's near or not and D is going trough another procedure so that leaves B behind
Electrons have a negative charge. Protons have a positive charge. I am sorry I do not know the last question...
Answer:
direction
Explanation:
because particles surround the bell, so when the bell vibrates, it causes particles surrounding it to vibrate back and forth vigorously. as these particles vibrate they collide with the neighbouring particles, passing on the energy.
hope this is what you are asking, if not please report it so that someone else gets to try it.
Answer:
True
Explanation:
Signals used for transmitting information contain many frequencies. Signal Bandwidth refers to the difference between the highest and lowest frequencies of the continuous band. In other words, a signal bandwidth is a range of frequencies.
B.W. = f₂ - f₁
It is measured in Hertz (Hz or per second).
Thus, the given statement is true.
Velocity = displacement / time
displacement = velocity × time
d = 29 ms⁻¹ ˣ 8.4 s
d = 243.6 m