Answer:
1. telescope
2.
![f = \frac{r}{2}](https://tex.z-dn.net/?f=f%20%3D%20%20%5Cfrac%7Br%7D%7B2%7D%20)
f- focal length
f- focal length r- the radius of curvature of the mirror
![\frac{1}{f} = \frac{1}{p} + \frac{1}{l}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7Bf%7D%20%20%3D%20%20%20%5Cfrac%7B1%7D%7Bp%7D%20%20%2B%20%20%5Cfrac%7B1%7D%7Bl%7D%20)
p-the distance of the object from the vertex of the mirror
l-the distance of the figure from the vertex of the mirror
I believe is A) Inner core
Answer:
The correct option is C
Explanation:
From the question we are told that
The initial speed of the rocket is ![v_i = 100 m/s](https://tex.z-dn.net/?f=v_i%20%3D%20100%20m%2Fs)
The speed of the rocket engine sound is ![V](https://tex.z-dn.net/?f=V)
The final speed of the rocket is ![v_f = 200 \ m/s](https://tex.z-dn.net/?f=v_f%20%3D%20200%20%5C%20m%2Fs)
The speed of the sound at
would still remain V this because the speed of sound wave is constant and is not dependent on the speed of the observer(The mountain ) or the speed of the source (The rocket ).
A clear example when lightning strikes you will first see (that is because it travels at the speed of light which is greater than the speed of sound) but it would take some time before you hear the sound of the
lightning
Here we see that the speed of the lightning(speed of sound) does not affect the speed of the sound it generates
Answer is B raindrops conduct electricity from clouds to the ground.
Lightning is formed when air, water droplets, and even ice crystals rub violently against each other inside a thundercloud, creating two opposite kinds of electrical charge
The available options are:
Mint is a dicot.
Mint is a monocot.
Mint is an angiosperm.
Mint is a bulb plant.
Answer:
Mint is a dicot.
Explanation:
Given the fact that Mint is considered to be a member of Lamiaceae, an angiosperm plant which is characterized by typically having leaves that consist of reticulate vacation and appears like veins in structure. It also has a seed that contains two cotyledons.
Hence, it is considered a DICOT PLANT due to these characteristics. The botanical name of Mint is referred to as Mentha arvensis.