Sound waves travel fastest through the ground.
A longitudinal wave is a form of wave in which the medium vibrates parallel to the direction of the wave.
Here,
The displacement of the medium moves with the wave motion in the same direction.
Sound waves are longitudinal waves because, the direction of the energy transport is parallel to the oscillations of the sound waves.
Since, it is created by compressions and rarefactions in the air, sound waves are known as longitudinal waves. The air particles vibrate in a direction that is parallel to the direction of propagation.
The sound waves require a medium to propagate.
Solids and liquids have the quickest sound wave propagation rates, whereas gases have the slowest. Gases are very loosely packed while liquids are not as securely packed as solids. Sound moves through solids much more quickly than it does through gases due to the distance between the molecules.
Hence,
Sound waves travel fastest through the ground.
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Answer: The correct option is the ground.
Explanation:
Sound is a longitudinal wave. In longitudinal wave, the particles vibrate parallel to the direction of the propagation of the wave.
It needs medium to travel. It can travel in solid, liquid and gas.
Sound wave travels faster in solid in comparison to liquid.
It travels slowest in air.
Ground is a denser medium. Here, the sound wave travels faster in comparison to the ocean and the air.
Therefore, the correct answer is the ground.
B. ice age.
C. cold wave.
D. draft.
water waves
radio waves
ultraviolet waves
waves in a wheat field
Mechanical waves;
Electromagnetic waves
B) The clouds flatten into a disc > The sun is born > The clouds condense > the planets are born
C) The clouds of dust and gases rotate at high speed > The clouds condense > The sun is born > The planets are born
D) The clouds of gases condense > The clouds rotate at high speed > The clouds flatten into an elliptical disc > The planets are born
Answer:
D) The clouds of gases condense > The clouds rotate at high speed > The clouds flatten into an elliptical disc > The planets are born
Explanation:
Planets are formed from Planetary nebula. The cloud of dust and gases condenses under its own weight. The condensed matter starts rotating at high speeds and gathers more mass. The core forms the star and rest of it eventually flattens into an elliptical disc from which planet is born. Thus, the correct sequence is: D) The clouds of gases condense > The clouds rotate at high speed > The clouds flatten into an elliptical disc > The planets are born.
B. 19.6 m/s
C. 4.9 m/s
D. 9.8 m/s
i just did the quiz and so the only 2 options that made logical sense would be B (19.6 m/s) or D (9.8 m/s) the reason someone could get confused between these two is because 19.6 divided by 2 is 9.8 m/s so for each second it will go down 9.8 m/s but since it wants to know the velocity it would be 19.6 m/s
hope this helps
The car travels a total distance of 2400 meters in 2 minutes at a constant speed of 20 meters per second.
Distance is the measurement of space between two points, typically in terms of length or spatial separation. It is a fundamental concept used in various fields, including physics, geography, and mathematics.
To find the total distance travelled by the car in 2 minutes, you need to calculate the distance covered in 1 second and then multiply it by the number of seconds in 2 minutes.
Since the car is moving at a constant speed of 20 meters per second, the distance covered in 1 second is 20 meters.
To find the total distance, multiply 20 meters by 60 seconds (1 minute) and then again by 2 (number of minutes).
The total distance travelled by the car in 2 minutes is 2400 meters.
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