Answer:
families
Explanation:
they all have different second names
<h2>
Hello!</h2>
The answer is:
b. 
<h2>
Why?</h2>
The centripetal acceleration or radial acceleration is present when an object is moving to describe a circular path. The centripetal acceleration is always perpendicular to the direction of the velocity and going inwards and towards the center.
The centripetal acceleration can be calculated using the following equation:

From the statement we know that:

So, calculating we have:

So, the correct answer is:
b. 
Have a nice day!
Answer:
Explanation:
Electricity is sent through high-intensity discharge lamps. A high-intensity discharge lamp emits light by an arc of electricity created between two electrodes.The electrical arc generates heat, which works with the gas and metal to create light-emitting plasma. Streetlights use bypass technology.