Amplitude is a measurement of the magnitude of displacement (or maximum disturbance) of a medium from its resting state, as diagramed in the peak deviation example below (it can also be a measurement of an electrical signal's increased or decreased strength above or below a nominal state).
Answer
b. energy
Explanation:
wave is a disturbance that carries energy from one particle to another particle.
Answer:
The time taken to get the shuttle is 6.91 minutes.
Explanation:
Given that.
Mass of an astronaut, 
Distance between astronaut and shuttle, d = 48.1 m
Mass of the camera, 
Speed of camera, v = 12 m/s
We need to find the time taken by the astronaut to reach her shuttle. Both shuttle and astronaut are at rest, their initial velocities will be equal to 0. Using the conservation of linear momentum as :

The time taken to get the shuttle is given by :

or
t = 6.91 minutes
So, the time taken to get the shuttle is 6.91 minutes.
Answer:
A. 30 m/s
D. 15 kilometers
Explanation:
Vector quantities have both magnitude and direction. Among the provided choices, B and C are scalar quantities as they have no direction.
30 m/s is the magnitude for velocity, a derivative of displacement.
15 kilometers is the metric magnitude (10³m) for displacement.