C. is the only double reaction here given that a double replacement reaction involves two compounds that exchange previous components, and C is the only solution with two compounds present
You’re correct, it’s gravity
A concave mirror is a curved mirror that bulges inward. Objects reflected in concave mirrors often appear bigger than they really are, although the specifics of how the image appears depends upon the object's distance from the mirror. Concave mirrors are used in car headlights, in dentist's offices and in makeup mirrors.
The answer is D.
Velocity is the speed in a particular direction.
Saying that you are going from Los Angeles to Catalina Island is not a particular direction, it is an end destination.
