Answer:
Pressure exerted on the wall is 8775 kgm/s²
Explanation:
Parameters given:
Time = 1s
Number of molecules: 5*10²³
Area: 8cm² = 8*0.0001 = 0.0008m²
Speed of molecules: 300m/s
Mass of N₂ molecule: 4.68 x 10⁻²⁶ kg
Pressure = Force/Area
Total pressure of N molecules will be:
Pressure = Force*Number of molecules/Area
Force is given as:
Force= mass*acceleration
And acceleration is:
Acceleration = velocity/time
Therefore,
Force = (mass*velocity)/time
Pressure = (mass*N*velocity)/(Area*time)
Pressure = (4.68 x 10⁻²⁶*5*10²³*300)/(0.0008*1)
Pressure = 7.02/0.0008
Pressure = 8775 kgm/s²
Answer:
the length of resultant vector is 5 inches
Explanation:
In the attachment, you will see X vector along the X axis and Y vector along the Y direction. Let the resultant vector be denoted by
The resultant vector always start from the tail of first vector and ends at the head of second vector.
Since it is a right angled triangle, so the result of resultant vector is found by using Pythagoras theorem i.e.
So, when we plug in the values of X = 48 and Y = 14
Therefore, the length of resultant vector is 5 inches.
The question in choice-C is the correct answer to your question.
(Is this confusing ?)
Answer:
Explanation:In Mendel's time, many people thought that offspring inherited a combination of traits from their parents. For example, they thought that an animal with white fur and an animal with black fur would produce pups with gray fur. This is called the theory of combined inheritance. How did Mendel show that the combination theory was wrong?
I believe it is the 2nd one because the ground purifies it over a period of a little while.