Answer: high temperature and low pressure
Explanation:
The Ideal Gas equation is:
Where:
is the pressure of the gas
is the volume of the gas
the number of moles of gas
is the gas constant
is the absolute temperature of the gas in Kelvin
According to this law, molecules in gaseous state do not exert any force among them (attraction or repulsion) and the volume of these molecules is small, therefore negligible in comparison with the volume of the container that contains them.
Now, real gases can behave approximately to an ideal gas, under the conditions described above and taking into account the following:
When <u>temperature is high</u> a real gas approximates to ideal gas, because the molecules move quickly, preventing the repulsion or attraction forces to take effect. In addition, at <u>low pressures</u>, the volume of molecules is negligible.
Electron<span>. the central part of an atom containing </span>protons<span> and </span>neutrons<span> ... which of the following is necessary to calculate the atomic </span>mass<span> of an element? ... which of the </span>statements correctly compares<span>the relative size of an ion to its neutral atom?</span>
Answer: Work W = 0
Explanation: Work W = F·s. Because rock does not move, s = 0 and
work done is zero.
Before the engines fail , the rocket's horizontal and vertical position in the air are
and its velocity vector has components
After , its position is
and the rocket's velocity vector has horizontal and vertical components
After the engine failure , the rocket is in freefall and its position is given by
and its velocity vector's components are
where we take .
a. The maximum altitude occurs at the point during which :
At this point, the rocket has an altitude of
b. The rocket will eventually fall to the ground at some point after its engines fail. We solve for , then add 3 seconds to this time:
So the rocket stays in the air for a total of .
c. After the engine failure, the rocket traveled for about 34.6 seconds, so we evalute for this time :
Average speed = distance travelled / time used