The right answer is B because a liquid can take the shape of anything its in but it has the same volume
Answer:
The total amount of energy that would have been released if the asteroid hit earth = The kinetic energy of the asteroid = 1.29 × 10¹⁵ J = 1.29 PetaJoules = 1.29 PJ
1 PJ = 10¹⁵ J
Explanation:
Kinetic energy = mv²/2
velocity of the asteroid is given as 7.8 km/s = 7800 m/s
To obtain the mass, we get it from the specific gravity and diameter information given.
Density = specific gravity × 1000 = 3 × 1000 = 3000 kg/m³
But density = mass/volume
So, mass = density × volume.
Taking the informed assumption that the asteroid is a sphere,
Volume = 4πr³/3
Diameter = 30 m, r = D/2 = 15 m
Volume = 4π(15)³/3 = 14137.2 m³
Mass of the asteroid = density × volume = 3000 × 14137.2 = 42411501 kg = 4.24 × 10⁷ kg
Kinetic energy of the asteroid = mv²/2 = (4.24 × 10⁷)(7800²)/2 = 1.29 × 10¹⁵ J
Light is a transverse wave because its components vibrate perpendicular to the direction of propagation.It has an electric and a magnetic property , so it is EM wave which is transverse in nature .
whereas, sound waves are longitudinal waves and <span>the particles of the medium move parallel to the direction that the pulse moves.
so, as sound waves moves parallel in direction of pulse so, it is affected by media , whereas light waves don't need medium to travel as they are em waves and tranversal in nature that is perpendicular motion.
hope it helepd :-)</span>
Answer-
Cono
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