Answer: The correct answer is vacuum.
Explanation:
Sound wave is a longitudinal wave in which the particles vibrate parallel to the direction of the motion of the wave. Sound wave consists of compression and rarefaction.
It needs a medium to travel. It can travel in solid, liquid and gas. It cannot travel in vacuum.
Denser the medium, more will be the speed of the wave.
Solid is more denser in comparison to liquid.
The speed of the sound in the solid medium is more in comparison to the liquid. The speed of the sound in liquid is more than the speed in the gas.
Therefore, vacuum is least effective medium for traveling sound waves.
The change from broken white lines to a solid line on the pavement markings of traffic signifies that overtaking from any side is not allowed or prohibited. The broken line signifies that you can overtake when safe.
Answer:
rate= 5000 m/million years
Explanation:
In order to find this rate, we must divide the number of meters it has moved into the number of years it took the plate to move that distance, so we get:
rate= 5000 m/million years.
<span> An electromagnet is a current-induced magnet. The basic setup is an electrical current circulating around some magnetizable material, such as an iron rod. The current and number of times the current circulates around determine the magnetic strength. Therefore, the same things that strengthen a current are the same things that strengthen an electromagnet.
</span><span> As current runs through a straight wire, a circular magnetic field is generated around it. When a wire is made into a circle, the current generates a magnetic field parallel to its axis. If you pile loops on top of each other, as in a coil or solenoid, you increase the magnetic field strength.</span>
The. 3rd one the ram of the bus