The examples where using conservation of energy to solve a problem is easier than other methods are:
1. Pendulum
2. Nuclear Power Plant
The principle of the conservation of energy says that:
Energy within an isolated system is neither created nor destroyed, it simply changes from one type of energy to another.
1. Pendulum:
As the pendulum swings down:
gravitational potential energy of the pendulum →kinetic energy of the pendulum.
As the pendulum swings up: kinetic energy of the pendulum→ gravitational potential energy of the pendulum.
2. Nuclear Power Plant:
Nuclear energy (from the decay of uranium) → thermal energy of water
→kinetic energy of a turbine →electrical energy + thermal energy (from friction in the turbine and transmission lines)
Learn more about conservation of energy, click here brainly.com/question/13949051
#SPJ4
Answer:
14160 kg/m^3
Explanation:
First of all, we need to find the volume of the cylinder.
The volume of the cylinder is given by:
![V=\pi r^2 h](https://tex.z-dn.net/?f=V%3D%5Cpi%20r%5E2%20h)
where:
is the radius
is the height
Substituting, we find
![V=\pi (0.021 m)^2 (0.051 m)=7.1 \cdot 10^{-5} m^3](https://tex.z-dn.net/?f=V%3D%5Cpi%20%280.021%20m%29%5E2%20%280.051%20m%29%3D7.1%20%5Ccdot%2010%5E%7B-5%7D%20m%5E3)
And the density is given by
![d=\frac{m}{V}](https://tex.z-dn.net/?f=d%3D%5Cfrac%7Bm%7D%7BV%7D)
where m = 1 kg is the mass. Substituting, we find
![d=\frac{1 kg}{7.1\cdot 10^{-5} m^3}=14,160 kg/m^3](https://tex.z-dn.net/?f=d%3D%5Cfrac%7B1%20kg%7D%7B7.1%5Ccdot%2010%5E%7B-5%7D%20m%5E3%7D%3D14%2C160%20kg%2Fm%5E3)
Answer:
As speed changes, wavelength and frequency change.
Explanation:
-Wave speed is related to both the wavelength and wave frequency as:
![Speed= Wavelength \times Frequency](https://tex.z-dn.net/?f=Speed%3D%20Wavelength%20%5Ctimes%20Frequency)
-Wavelength is measured in meters, frequency in Hertz(Hz) and speed in m/s.
-Increasing the wavelength of a wave decreases its frequency and therefore the wave speed will remain constant .
-As a such, the product of wavelength and wave frequency is still the same speed.
Radioactive "decay" means particles and stuff shoot OUT of a nucleus.
After that happens, there's less stuff in the nucleus than there was before.
So the new mass number is always less than the original mass number.
The average adult has about 1.2-1.5 gallons of blood in their bodies.