A.) Hertz is the measuring unit for frequency!!
[Your explanation is correct]
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John used smothering as the method to control the harmful invasive plants in his orchard. Smothering is an example of a manual method of control and it works best in a small population of invasive species. Smothering involves covering the invasive species with a barrier that is highly impenetrable for one growing season in order to prevent these species from thriving in the environment.
The third (left hand corner) since the x and y are both negative.
The movements of the tectonic plates
The answer would be B: The ground exerts an equal force on the golf ball.
