If a car was driving 45 miles per hour northeast, and is now driving 30 miles per hour north,
A
the car's velocity decelerated.
B
the car's velocity accelerated.
с
the car's velocity remained unchanged.
D
the car's acceleration is 30 miles per hour.

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

a. hope i'm right

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