Answer:
por el Principio de Homogeneidad Dimensional y el uso de operaciones de adición y sustracción.
Explanation:
Por el Principio de Homogeneidad Dimensional, A, B, C y D deben tener las mismas magnitudes físicas para la realización de operaciones de adición y sustracción. Es decir:
, donde ![[A] = [B] = [C] = [D]](https://tex.z-dn.net/?f=%5BA%5D%20%3D%20%5BB%5D%20%3D%20%5BC%5D%20%3D%20%5BD%5D)
Answer:
(D) 0.99 cm
Explanation:
Given that the radius of curvature of the mirror is 25 cm.
And another car is following which is behind the mirror of 20 m.

Focal length is half of the radius of curvature and it is negative for convex lens.
Now the mirror formula.

So,

Now
Magnification is,

So,

So, Height of the image

Therefore, the image height is 0.99 cm.
Answer: B
Longitudinal wave
Explanation:
Transverse waves have crests and troughs
Longitudinal waves have compressions and rarefactions. A compression is where the density of the wave medium is highest. While a rarefaction is where the density of the wave medium is lowest.
Since sound wave is a longitudinal wave. And longitudinal wave exists apart from sound, we can therefore conclude that it's a longitudinal wave in spring.
I know for sure that the third one is correct
The answer is having fewer neutrons than protons or electrons.