Answer: 1 = Heat
2=gas
3=it gets hot enough to boil because the metal conducts the heat into the water to heat it up and eventually boil.
Explanation: its common sense
The planetary temperature energy balance is obtained by radiating back the absorbed radiation energy from outer-space, by the planet and thus acquiring thermal equilibrium.
What is the process of attaining thermal equilibrium by Earth?
The Stefan-Boltzmann law states that the more the temperature a planet has, the more it will radiate out to reach thermal equilibrium.
We know that outer space contains large masses of radiative energy freely distributed in its vast expanse. A small fraction of this energy is absorbed by the Earth through the atmosphere, surface land, clouds etc.
Now, radiative balance is achieved when a planet's surface continuously warms up until it reaches its peak at which point the same amount of absorbed energy can then be radiated back to space. The relative amount of energy radiated back by a planet is dependent upon the size of the planet.
A colder planet relatively absorbs lower amount of radiation energy from space. In some time, as the planet heats up enough, the energy is radiated back to the space attaining thermal equilibrium.
Learn more about Stefan-Boltzmann law here:
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Inner wisdom or direct knowing,or subjective to something known as understand devolved by the philosopher William James in 1902
Answer:
F=1487.52 N
μ = 0.12
Explanation:
Given that
m= 1200 kg
r= 25 m
v= 20 km/hr = 20 x 5/18 m/s
v= 5.55 m/s
To maintain the speed 5.55 m/s ,friction force should be equal to the radial force
Friction force = Radial force(F)
By putting the values
F=1487.52 N
So friction force = 1478.52 N
We also know that
Friction force = μ m g
1478.52 N = μ x 1200 x 10 ( take g =10 m/s²)
μ = 0.12
This is minimum coefficient of static friction required to keep the car in this turn.
Answer: 1) c. The energy on the macroscopic scale decreased, and the energy on the molecular scale increased.
2) d. Friction converts some energy on the macroscopic scale to energy on the molecular scale.
3) d. The mechanical energy of the system decreased because of friction.
4) d. The mechanical energy of the system at the beginning of the experiment is equal to the mechanical energy of the system at the end of the experiment.
5) d. The mechanical energy of the system decreased due to the transfer of energy on a macroscopic scale to energy on a molecular scale.