Answer:
Explanation:
First of all, let's convert everything into SI units:
n = 2.4 mol (number of gas moles)
(gas pressure)
(gas volume)
R = 8.31451 J/K · mol (gas constant)
The ideal gas equation states that
Solving for T, we find the gas temperature
And now we can find the average kinetic energy of the gas:
where
k = 1.38066 × 10−23 J/K is the Boltzmann's constant
Substituting,
The change in the skier's gravitational potential energy is 199430 J.
<h3> Gravitational potential energy:</h3>
This is the energy of a body due to its position in a gravitational field. The S.I unit of gravitational potential energy is Joules (J)
The Change in the skier's gravitational potential energy can be calculated using the formula below.
Formula:
- ΔP.E = mg(Δh)............... Equation 1
Where:
- ΔP.E = Change in the skier's potential energy
- m = mass of the skier
- Δh = change in height to which it was raised
- g = acceleration due to gravity.
From the question,
Given:
Substitute these values into equation 1
- ΔP.E = 55×370×9.8
- ΔP.E = 199430 J.
Hence, The change in the skier's gravitational potential energy is 199430 J.
Learn more about potential energy here: brainly.com/question/1242059
Fundamental quantity : quantities which are independent on other physical quantity .
ex: length,mass,time, current, amount of substance, luminous intensity, thermodynamic temperature,
Derived quantity : quantities which are depend on fundamental quantities.
ex: Area, volume, density, speed, acceleration, force, velocity etc.
Speed of wave = frequency x wavelength
= 250 x 6 = 1500 m/s.
The atomic number of an atom says how many protons it has. This number cant change, since the atomic number is what gives elements their identities (in the periodic table, at least).
The mass number, on the other hand, says how many protons AND neutrons the atom has (so, the sum of P+ and N0). So, electrons have nothing to do with this number.
Atoms are neutrally charged, which means there has to be an equal number of positive and negative particles. The negative particles of an atom are its electrons, and since our atom has 4 protons, it must also have 4 electrons.
