Go neutreal, turn blinkers on, then brake onto the side of the road.
The type of friction this is are Kinetic friction!
Explanation:
The pressure of an object is calculated as follows: 
The area of test tube stopper is A= π
Since radius is half the diameter we have the following:
R = 
= 0.60 cm
Thus the area of the test tube becomes:
A = π 
= π 
= 1.14 * 
Now the force from the outside of the tube.
= 
= 11.55N
The net upward force on the stopper is equal to the difference of force exerted by pressure from inside of the tube and that from the outside.
= 23.1 N
Not including the endpoints, there are 3 nodes.
<h3>
What is a node?</h3>
In a wave, a node is a stationary point. For example in a vibrating string of a guitar, the endpoints would be nodes.
But here we need to ignore the endpoints, we only know that the wave has two wavelengths.
For a wave with N wavelengths the number of nodes that are not endpoints is just given by 2*N - 1 (while if we counted the endpoints we would have 2*N + 1).
So in this case we have N = 2, then there are 2*2 - 1 = 3 nodes.
If you want to learn more about waves, you can read:
brainly.com/question/14015797
