Answer:
the relative speed should be 40mph
Explanation:
It essentially quadruples the energy.
Explanation if you’d like:
The energy transported by a wave is directly proportional to the square of the amplitude so. whatever change occurs in the amp, the square that affect infects energy. This means the doubling of the amplitude results in a quadrupling of the energy
Answer
given,
diameter = 6 m
depth = h = 1.5 m
Atmospheric pressure = P₀ = 10⁵ Pa
a) absolute pressure
P = P₀ + ρ g h
P = 10⁵ + 1000 x 10 x 1.5
P = 1.15 x 10⁵ Pa
b) When two person enters into the pool
mass of the two person = 150 Kg
weight of water level displaced is equal to the weight of person
ρ V g = 2 m g
![V = \dfrac{2 m}{\rho}](https://tex.z-dn.net/?f=V%20%3D%20%5Cdfrac%7B2%20m%7D%7B%5Crho%7D)
![V = \dfrac{2\times 150}{1000}](https://tex.z-dn.net/?f=V%20%3D%20%5Cdfrac%7B2%5Ctimes%20150%7D%7B1000%7D)
V = 0.3 m³
Area of pool = ![\dfrac{\pi}{4}d^2](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Cpi%7D%7B4%7Dd%5E2)
=![\dfrac{\pi}{4}\times 6^2](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Cpi%7D%7B4%7D%5Ctimes%206%5E2)
= 28.27 m²
height of the water rise
![h = \dfrac{V}{A}](https://tex.z-dn.net/?f=h%20%3D%20%5Cdfrac%7BV%7D%7BA%7D)
![h = \dfrac{0.3}{28.27}](https://tex.z-dn.net/?f=h%20%3D%20%5Cdfrac%7B0.3%7D%7B28.27%7D)
h = 0.0106 m
pressure increased
P = ρ g h
P = 1000 x 10 x 0.0106
P = 106.103 Pa
<span>The scientist who discovered that an electric current could be
produced by moving a wire through a magnetic field is Thomas Alva Edison</span>
Answer:
![1.198*10^{-8}](https://tex.z-dn.net/?f=1.198%2A10%5E%7B-8%7D)
Explanation:
The law of gravitation has to be used in this question along with Newton's second law
![Ratio = \frac{Gravitational force}{weight of the smaller sphere}= \frac{\frac{6.674*10^{-11*148*0.63} }{0.29^{2} } }{0.63 kg * 9.8} = 1.198*10^{-8}](https://tex.z-dn.net/?f=Ratio%20%3D%20%5Cfrac%7BGravitational%20force%7D%7Bweight%20of%20the%20smaller%20sphere%7D%3D%20%5Cfrac%7B%5Cfrac%7B6.674%2A10%5E%7B-11%2A148%2A0.63%7D%20%7D%7B0.29%5E%7B2%7D%20%7D%20%7D%7B0.63%20kg%20%2A%209.8%7D%20%3D%201.198%2A10%5E%7B-8%7D)