Answer: the waves travel in an horizontal direction while the strings vibrate in a vertical direction.
The work is path independent since we have a conservative force.
Thus
Answer (1)
Answer: Instantaneous speed.
Explanation:
Req = 30.0Ω.
When two or more resistors are in series, the intensity of current that passes through each of them is the same. Therefore, if you notice, you can observe that the three previous series resistors are equivalent to a single resistance whose value is the sum of each one.
Req = R1 + R2 + R3 = 10.0Ω + 10.0Ω + 10.0Ω = 30.0Ω