The height of the table above the ground is 0.45 m.
<h3>Data obtained from the question</h3>
From the question given above, the following data were obtained:
- Horizontal velocity (u) = 3 m/s
- Time (t) = 0.3 s
- Acceleration due to gravity (g) = 10 m/s²
- Height (h) =?
<h3>How to determine the height </h3>
The height of the table can be obtained by using the following formula:
h = ½gt²
h = ½ × 10 × 0.3²
h = 5 × 0.09
h = 0.45 m
Thus, the height of the table is 0.45 m
Learn more about motion under gravity:
brainly.com/question/26275209
You can't answer this question because you aren't giving the specific type of seismic waves. There is an s-wave a p-wave and an l-wave. Those are the basic waves. An S-wave cannot travel through a liquid at all. So, obviously it travels slower than any other seismic wave.
<span>It would travel faster because their speed depends on the density and composition of material that they pass through.</span>
Explanation:
It is given that,
Frequency of the laser light, ![f=4.2\times 10^{14}\ Hz](https://tex.z-dn.net/?f=f%3D4.2%5Ctimes%2010%5E%7B14%7D%5C%20Hz)
Time,
(a) Let
is the wavelength of this light. It can be calculated as :
![\lambda=\dfrac{c}{f}](https://tex.z-dn.net/?f=%5Clambda%3D%5Cdfrac%7Bc%7D%7Bf%7D)
![\lambda=\dfrac{3\times 10^8}{4.2\times 10^{14}}](https://tex.z-dn.net/?f=%5Clambda%3D%5Cdfrac%7B3%5Ctimes%2010%5E8%7D%7B4.2%5Ctimes%2010%5E%7B14%7D%7D)
![\lambda=7.14\times 10^{-7}\ m](https://tex.z-dn.net/?f=%5Clambda%3D7.14%5Ctimes%2010%5E%7B-7%7D%5C%20m)
or
![\lambda=714\ nm](https://tex.z-dn.net/?f=%5Clambda%3D714%5C%20nm)
(b) Let n is the number of the wavelengths in one pulse. It can be calculated as :
![n=f\times t](https://tex.z-dn.net/?f=n%3Df%5Ctimes%20t)
![n=4.2\times 10^{14}\times 3.2\times 10^{-11}](https://tex.z-dn.net/?f=n%3D4.2%5Ctimes%2010%5E%7B14%7D%5Ctimes%203.2%5Ctimes%2010%5E%7B-11%7D)
n = 13440
Hence, this is the required solution.
Answer:
When a body moves along a straight line with uniform speed or steady speed is called Uniform motion. When a body moves along a straight line but with variable or change in speed is called non-uniform motion.Hope this answer helps.