Answer:
°C = Density of water (g/cm3)
4° = 1.0000
20° = 0.9982
40° = 0.9922
60° = 0.9832
80° = 0.9718
Using kinematic reasoning, the answers for the changes that can cause crashes are:
we can manipulate
- The speed of the vehicles, especially that of the second car
- he traffic light change time
- Change some condition of the pavement after the first vehicle passes
Autonomous systems are systems that take a series of signals from the outside, analyze them and carry out actions according to how to handle them.
In that case you have two cars one behind the other at a short distance a traffic light with a yellow light is approaching.
Some parameters can be modified to cause the crash:
- The car in front accelerates to pass the traffic light, but the traffic light changed to red, in this case if the car behind also accelerated, there may not be enough distance to stop and crash.
- You can change the traffic light to green whereby the first car continues its speed, but the traffic light time changes very quickly to red, whereby the first car stops, but the car behind cannot stop.
- The car behind accelerates to also pass the yellow light, but turns red and the first one crashes to a stop.
- We change some condition of the pavement after the first vehicle passes, for example wetting the pavement, which decreases the coefficient of friction, consequently the second vehicle does not have time to stop.
We can appreciate that if there is not a good and fast communication between the two vehicles, it is easy for them to crash.
In conclusion, using kinematic reasoning, the answers for the changes that can test shocks are found:
- The second vehicle increases speed and the first must brake sharply
Learn more about stopping distance here:
brainly.com/question/24254597
Answer:
c. may be accompanied by the sound of explosively expanding hot air, called thunder.
Explanation:
Lightning is a discharge which is due to the reaction between oppositely charged charges in the clouds, or between clouds base and the Earth surface.
The motion of the cloud causes charging of clouds by friction, thus the reaction between opposite charges (jumping of charges from one cloud to another) in the cloud can lead to lightning. Also, oftentimes the bottom of a cloud is negatively charged so that this is attracted to the positive charge on the earth surface. Thus leading to a discharge called lightning.
Thus in the given question, the appropriate option is C. This implies that, lightning may be accompanied by the sound of explosively expanding hot air, called thunder.
Answer: I think its 120
Explanation: thx for the free points :)
