Answer:
Correct option a. one state variable T.
Explanation:
In the case of an ideal gas it is shown that internal energy depends exclusively on temperature, since in an ideal gas any interaction between the molecules or atoms that constitute it is neglected, so that internal energy is only kinetic energy, which depends Only of the temperature. This fact is known as Joule's law.
The internal energy variation of an ideal gas (monoatomic or diatomic) between two states A and B is calculated by the expression:
ΔUAB = n × Cv × (TB - TA)
Where n is the number of moles and Cv the molar heat capacity at constant volume. Temperatures must be expressed in Kelvin.
An ideal gas will suffer the same variation in internal energy (ΔUAB) as long as its initial temperature is TA and its final temperature TB, according to Joule's Law, whatever the type of process performed.
Answer:
They all have frequency, wavelength, amplitude, speed and also all transfer energy.
The acceleration of a car with the mass of 1,980kg with a net horizontal force of 1,000 N is 0.51m/s².
<h3>HOW TO CALCULATE ACCELERATION?</h3>
The acceleration of a body can be calculated using the following formula:
a = F ÷ m
Where;
- a = acceleration (m/s²)
- F = Force (N)
- m = mass (kg)
According to this question, a car has a mass of 1980kg and horizontal force of 1000N. The acceleration is as follows:
a = 1000/1980
a= 0.51m/s²
Therefore, the acceleration of a car with the mass of 1,980kg with a net horizontal force of 1,000 N is 0.51m/s².
Learn more about acceleration at: brainly.com/question/12134554
Answer:
<em>The collision last 0.83 s</em>
Explanation:
Using the equation of motion,
S = (v+u)t/2 ........................ Equation 1
making t the subject of the equation,
t = 2S/(v+u)..................... Equation 2
Where S = distance, v = final velocity, u = initial velocity, t = time
Given: v = 0 m/s, u = 29.0 m/s, S = 1.20 m,
Substituting these values into equation 2
t = 2(1.2)/(29+0)
t = 2.4/29
t = 0.83 sec.
<em>Thus the collision last 0.83 s</em>
Answer:
0.6
Explanation:
The volume of a sphere = 
Therefore 
r of the disc = 
Using conservation of angular momentum;
The 
of the sphere = 
of the disc = 
= 0.6
