Answer:
A.
Explanation:
All the arrows align to the point right
Answer:
It remains the same.
Explanation:
» At 100°C, it is the boiling point of water. And it starts changing from liquid state to gaseous state
The andromeda galaxy is approaching our galaxy with a radial velocity of 120 km/s. given the galaxies present separation of 800 kpc, and neglecting both the transverse component of the velocity and the effect of gravity in accelerating the motion, estimate when the two galaxies will collide.
The Andromeda Galaxy, also known as Messier 31, M31, or NGC 224 and originally the Andromeda Nebula, is a barred spiral galaxy that is 2.5 million light-years away from Earth and the closest big galaxy to the Milky Way. It has a diameter of roughly 46.56 kiloparsecs.
The Milky Way, which houses the Solar System and Earth, and the Andromeda Galaxy are anticipated to collide in roughly 4.5 billion years. This galactic collision will take place between the two largest galaxies in the Local Group. The Andromeda galaxy is the brightest galaxy outside of our solar system. It is the furthest object that the majority of us humans can see with our unaided eyes at a distance of 2.5 million light-years.
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Answer: The accurate statement which describes the transmission of sound through various medium is D.
Explanation:
Sound is longitudinal wave in which the vibration of particles travels parallel to the propagation of the motion of the wave. It requires a medium to travel. It consists of compression and rarefaction.
Sound insulator prevents the sound to travel for example plastic, wood etc. Sound travels faster in solid medium than in liquid medium. Sound travels faster in liquid than in gas. Less elastic material absorbs sound for example paper in compare to inelastic material.
Therefore, the accurate statement which describes the transmission of sound through various medium is "Sound insulators prevent sound from being transmitted better than elastic solids.
First answer: vibrations Second: louder