In an air conditioner, a substance that easily evaporates and condenses is used to transfer energy from a room to the air outsid
1 answer:
You might be interested in
The current is defined as the amount of charge Q that passes through a certain point of a wire in a time 
:
But the charge Q flowing in the wire is just the charge of a single electron, e, times the number of electrons N:
so the current can be rewritten as
Using
, 
(charge of one electron), and 
, we find the current:
Therefore correct answer is A).
But the charge Q flowing in the wire is just the charge of a single electron, e, times the number of electrons N:
so the current can be rewritten as
Using
Therefore correct answer is A).
Answer:
The speed needed to escape from the solar system starting from the surface of Neptune is approximately 23557.615 meters per second.
Explanation:
The escape speed needed to escape from the gravitational influence of a planet (), measured in meters per second, is derived from Newton's Law of Gravitation and Principle of Energy Conservation and defined by the following formula:
(1)
Where:
- Gravitational constant, measured in cubic meters per kilogram-square second.
- Mass of Neptune, measured in kilograms.
- Radius from the center to surface, measured in kilograms.
If we know that ,
and
, then the escape speed needed is:
The speed needed to escape from the solar system starting from the surface of Neptune is approximately 23557.615 meters per second.
Answer:
a)The temperature of the gas in increased by four times its original value.
Explanation:
For a fixed amount of a gas, the ideal gas equation can be written as follows:
where
p is the gas pressure
V is the gas volume
T is the gas temperature (in Kelvins)
For a gas under transformation, the equation can also be rewritten as
where the labels 1,2 refer to the initial and final conditions of the gas.
In this problem, we have:
- The pressure of the gas is doubled:
- The volume of the gas is doubled:
Substituting into the equation, we find what happens to the temperature:
So, the correct choice is
a)The temperature of the gas in increased by four times its original value.