Answer:
Which of the following properties describes a direct current system but not an alternating current system?
The current always flows it the same direction.
Explanation:
When current flows in the same direction, it is described to have flow in a direct manner rather than an alternate system
A the concentration gradient!
The gravitational potential energy of Sara at the given height is 10594.8J.
Given the data in the question;
- Mass of Sara;

- Distance from ground;

- Acceleration due to gravity;

- Gravitational potential energy;

<h3>Gravitational Potential Energy</h3>
Gravitational potential energy is the potential energy an object with mass posessses relative to another object with mass due to gravity.
It is expressed as;

Where m is mass, h is height and g is acceleration due to gravity.
To determine the gravitational potential energy of Sara, we substitute our given values into the expression above.

Therefore, the gravitational potential energy of Sara at the given height is 10594.8J.
Learn more about gravitational potential energy: brainly.com/question/3910603