Answer:
1) Measuring cylinder
2) Top Pan Balance
Explanation:
To find the density of the pebble Nabil should first accurately measure the mass of the pebble using the top pan balance
He should then fill the displacement can till the water reaches the outlet pipe at the to of the cylinder
He should then place the pebble into the cylinder carefully ans allow the water that would start coming out to stop
The volume of water in the displaced cylinder is then measured and the density is found by dividing the mass of the pebble by the volume of water in the measuring cylinder
![Density \ of \ pebble = \dfrac{Pebble \ mass}{Volume \ of \ water \ in\ the \ measuring \ cylinder} = \dfrac{Pebble \ mass}{Water \ volume \ displaced}](https://tex.z-dn.net/?f=Density%20%5C%20of%20%5C%20pebble%20%3D%20%20%5Cdfrac%7BPebble%20%5C%20mass%7D%7BVolume%20%5C%20of%20%5C%20water%20%5C%20in%5C%20the%20%5C%20measuring%20%5C%20cylinder%7D%20%3D%20%20%5Cdfrac%7BPebble%20%5C%20mass%7D%7BWater%20%5C%20volume%20%5C%20displaced%7D)
The speed of the wave in the rod is
![The speed of the wave in the rod is $v = \sqrt{\frac{Y}{\rho}} = \sqrt{\frac{20\times 10^{10}\ \mathrm{N/m^2}}{7.86\times 10^3\ \mathrm{kg/m^3}}} = 5044\ \mathrm{m/s}$](https://tex.z-dn.net/?f=The%20speed%20of%20the%20wave%20in%20the%20rod%20is%20%24v%20%3D%20%5Csqrt%7B%5Cfrac%7BY%7D%7B%5Crho%7D%7D%20%3D%20%5Csqrt%7B%5Cfrac%7B20%5Ctimes%2010%5E%7B10%7D%5C%20%5Cmathrm%7BN%2Fm%5E2%7D%7D%7B7.86%5Ctimes%2010%5E3%5C%20%5Cmathrm%7Bkg%2Fm%5E3%7D%7D%7D%20%3D%205044%5C%20%5Cmathrm%7Bm%2Fs%7D%24)
5044m/s
<h3>
What is sound wave?</h3>
A sound wave is the pattern of disruption brought on by the movement of energy moving through a medium as it propagates away from the source of the sound (such as air, water, or any other liquid or solid substance). Pressure waves are produced when an item vibrates, such as a ringing phone, and these waves are known as sound waves. The surrounding medium's particles are disturbed by the pressure wave, and those particles disrupt the particles next to them, and so on. Like ocean waves, the disturbance's pattern causes outward movement in all directions. Usually in all directions and with decreased intensity as it gets further away from the source, the wave transmits the sound energy through the medium.
To know more about sound wave, visit;
brainly.com/question/21995826
#SPJ4
At the same speed as the other ice cube
Your value for a Roman cubitus is incorrect. It is actually equivalent to
<em>0.445m not 0.554m</em>.
The answer to your question is 4.99cubiti or 5 cubiti (if rouded-off).
Here is why:![2.22m * \frac{1cubitus}{0.445m} \\ =\frac{2.22cubiti}{0.445} \\ 4.99cubiti](https://tex.z-dn.net/?f=2.22m%20%2A%20%5Cfrac%7B1cubitus%7D%7B0.445m%7D%20%5C%5C%20%20%3D%5Cfrac%7B2.22cubiti%7D%7B0.445%7D%20%5C%5C%204.99cubiti)
If you round-off your answer then your answer will be
5 cubiti.
The answer is A) electric current ⚡️
Can i have brainliest