Answer:
A. 1.73 x 10^5 J
Explanation:
The internal energy of a gas is related to the average speed of the molecules of the gas. In fact:
- The internal energy, U, is directly proportional to the temperature of the gas, T, according to
- The temperature of the gas, T, is proportional to the square of the average speed of the molecules, v, according to
where both terms represent the average kinetic energy of the molecules.
- Therefore, we can conclude that the higher the internal energy, the faster the average speed of the molecules: among the choices given, the sample with highest internal energy is sample A.
1. True
2. C, 60 x 2 = 120N
3. A , 6 m/s^2 ; a = F/m = 180/30 = 6
4. A; F= ma > m = f/a
Answer:
Explanation:
Work is given by the equation 
where 
is force and 
is displacement.
Displacement is defined as change in position. In this case, the box moves from 5m to 20m. Its displacement is 
.
The force acting on the box is the force of gravity, given as 
.
Therefore, the total work done is:
(two significant figures).
Answer:264.58 mm of Hg
Explanation:
Given
Volume of gas 
Pressure 
If the Plunger is pressed volume is reduced to
As temperature of the gas does not change so it follows boyle's law
According to which
A) it gets more negative
B) it becomes neutral
C) it gets more positive
D) it becomes reactive
(C) ;)
