The density of <u>a medium</u> is the second factor that <u>affects the speed of sound.</u>
Please vote <u>Brainliest</u> (:
Lumbar nerves transmit signals that allow us to walk. They are a pivotal part of the human body, and without them we would be immobile. Hope this helps.
Answer:
series circuit
Explanation:
A series circuit is wired with only one path for the current to flow through all the devices in a row and back to the starting point.
Answer:
c. 3/2 mg
Explanation:
Given that the acceleration of an elevator is 1/2 g upward.
The reading on the scale of the elevator is the net external force acting on the elevator.
Let the force F acting on the elevator as shown,
By using Newton's 2nd law, 
where,
is the net force acting on the elevator.
m is the mass of the elevator,
a is the acceleration of the elevator, as given a=1/2 g upward.
So, 

So, the reading on the scale in the elevator is
.
Hence, option (c) is correct.