Answer: E. 2A
Explanation:
Amplitude(A) of a wave is the displacement of a body from its position of rest. The maximum value of the amplitude is the crest and the minimum value is the trough.
For a wave to make a cycle, it has to move to and from from its point of displacement.
If the red spot on the string completes a cycle, this means it must have pass through the crest and the trough making it 2 amplitudes.
Answer:
20 Joules
Explanation:
Work is done whenever a force moves a body through a certain distance in the direction of the force. So, work done is the product of force and distance moved.
Therefore, we have;
Work done = Force x distance
i.e Wd = Fs
Given that: F = 20 N and s = 1 m, then;
Wd = 20 N x 1 m
= 20 Nm
The work done by the father is 20 Joules(Nm).
Any metal element can form a positive ion because they lose electrons to become stabilized
Answer:
C.
Explanation:
I think it's c please let me know if it's incorrect
I Think The answer is b I hope it helps My friend Message Me if I’m wrong and I’ll change My answer and fix it for you