Sry,I only know the answer of q2
Chlorine is a non metal because it is bad conductor of heat and sodium is a metal because it is good conductor of heat.
The 3 ways in which metal is different from non metal are given below:
1)metal are good conductor of heat but nonmetal are bad conductor of heat.
2)metals are malleable but non metal aren't malleable.
3)metals are generally ductile but non metal aren't ductile.
Hope it will helpyou!
Answer: Mechanical longitudinal waves are also called compressional or compression waves, because they produce compression and rarefaction when traveling through a medium, and pressure waves, because they produce increases and decreases in pressure.
Explanation:
mark brainliest pls
Answer:
Below
Explanation:
To find the acceleration of the car you can use this formula and rearrange :
vf = vi + at
We know that our time is 2 seconds, our initial velocity, vi, is 20 m/s, and our final velocity vf is 0 because the car comes to a stop before hitting the dog.
So we can just go ahead and plug in these values into the equation above :
0m/s = 20m/s + (a)(2s)
-20m/s = 2s(a)
Divide both sides by 2
-10m/s^2 = a
Therefore the acceleration of the car is -10m/s^2 [forward]
You could also write this as 10m/s^2 [back]
Hope this helps! Best of luck <3
