Answer:
The work input during this process is -742 kJ
Explanation:
Given;
Initial temperature of nitrogen T₁ = 250 K
final temperature of nitrogen T₂ = 450 K
mass of nitrogen, m = 5 kg
The work input during the process is calculated as;
where;
R is gas constant = 0.2968 kJ/kgK
substitute given values in above equation.
Therefore, the work input during this process is -742 kJ
Answer:
Part a)
Part b)
Explanation:
As we know that initial speed of the car is
now we have
Part a)
As we know that acceleration is constant here
so we have
Part b)
distance moved by the car is given as
now we have
.........Nucler fission.... .
Answer:
The collision is not elastic. The system increases his kinetic energy m*v₀² times.
Explanation:
Assuming no external forces acting during the collision, total momentum must be conserved.
Considering the information provided, we can write the momentum conservation equation as follows:
m*v₀ = -m*v₀ + 2*m*vf
Solving for vf, we arrive to this somehow surprising result:
vf = v₀ (in the same direction that m was moving before the collision).
In order to determine if the collision was elastic, or not, we need to calculate the kinetic energy of the system before and after the collision:
K₀ = 1/2*m*v₀²
Kf = 1/2*m*v₀² (due to the object of mass m, as the kinetic energy is always positive) + 1/2 (2m) * v₀²
⇒Kf = 1/2*m*v₀² + 1/2 (2m) * v₀² = 3/2*m*v₀²
ΔK = Kf - K₀ = 3/2*m*v₀² - 1/2*m*v₀² = m*v₀²
As there is a net difference between the final and initial kinetic energies, and the total kinetic energy must be conserved in an elastic collision (by definition) we conclude that the collision is not elastic, and the change in the kinetic energy of the system is equal to m*v₀².
The wavelength of the water wave is 15 m.
<h3>What is wavelegth?</h3>
Wavelength is the distance of a complete cycle traveled by a wave.
To calculate the wavelength of the wave, we use the formula below.
Formula:
- v = λ/T.................Equation 1
Where:
- v = velocity of wave
- T = period
- λ = wavelength.
make λ the subject of the equation
- λ = vT............... Equation 2
From the question,
Given:
Substitute these values into equation 2
Hence, The wavelength of the water wave is 15 m.
Learn more about wavelength here: brainly.com/question/10750459
